In some babies, high lung pressure comes from the lungs or the birth transition, not a heart defect.
PPHN is a short-term form. It appears within hours of birth, when the lung circulation fails to switch over, and is treated in a neonatal unit.
Not all newborn pulmonary hypertension is PPHN. Underdeveloped lungs, as in a diaphragmatic hernia, can also raise lung pressure.
Premature babies with chronic lung disease, called bronchopulmonary dysplasia (BPD), can develop it over weeks rather than hours.
India has the highest number of preterm births in the world, so BPD-related lung pressure matters here.
An echocardiogram is the first test, and early specialist review gives the best chance of a good result.
Few things rattle new parents more than a baby who struggles to breathe. In some newborns, the trouble lies in the lungs: the arteries that carry blood through them stay under high pressure, so the baby cannot take in enough oxygen. Doctors call this pulmonary hypertension.
In babies, it often has nothing to do with a heart defect. It can begin with the way the body changes at birth, or with lungs that are still growing, especially in babies born early. This guide explains pulmonary hypertension in newborns and premature babies in plain terms: the forms it takes, the signs, how it is diagnosed, and how it is treated.
What is pulmonary hypertension in newborns and premature babies?
Pulmonary hypertension in newborns is high pressure in the arteries that carry blood to the lungs, caused by the lungs or the birth transition rather than a heart defect. It takes three main forms: PPHN in the first hours of life, pulmonary hypertension from underdeveloped lungs, and the longer-term pressure that can build in premature babies with chronic lung disease.
Before birth, a baby’s lung arteries are tight and blood bypasses the lungs. At birth they should relax and open. Neonatal pulmonary hypertension happens when this does not go to plan, or when the lungs have not formed properly. For the wider picture, see our guide to pulmonary hypertension treatment.
PPHN: when the lungs do not switch over at birth
Persistent pulmonary hypertension of the newborn (PPHN) happens when a baby’s lung arteries stay tight after birth, so blood cannot pick up enough oxygen. It usually shows within hours of birth, in babies born at or near term, and is treated as an emergency in a neonatal unit.
The most common trigger is meconium aspiration, when a baby breathes in the first stool around the time of birth. Infection such as sepsis or pneumonia, breathing distress, and a difficult birth with low oxygen are other frequent causes (Merck Manual, PPHN).
The main PPHN symptoms are fast breathing, grunting, and a deep blue colour that barely improves with oxygen. Care is given in a neonatal intensive care unit, and may include oxygen, breathing support, a gas called inhaled nitric oxide that relaxes the lung arteries, and medicines to support the heart. In severe cases, a heart-lung bypass machine (ECMO) is used. Many babies recover well with timely care.
Neonatal pulmonary hypertension beyond PPHN
Not all pulmonary hypertension in newborns is the short-term PPHN type. Some babies have high lung pressure because their lungs or lung vessels did not form fully before birth. This form tends to last longer and needs a clear diagnosis of the cause.
A key example is a congenital diaphragmatic hernia, where a gap in the muscle below the lungs lets other organs press into the chest. The lungs and their vessels stay small, and lung pressure runs high. In a study from AIIMS, New Delhi, pulmonary hypertension was found in about half (51%) of newborns with a diaphragmatic hernia, and it was a major reason some did not survive. Other causes include underdeveloped lungs from low fluid around the baby in pregnancy. These babies need a specialist to pin down the cause, because treatment and outlook differ from simple PPHN.
Bronchopulmonary dysplasia (BPD) and pulmonary hypertension in premature babies
Bronchopulmonary dysplasia is a chronic lung disease of premature babies. Their lungs are still developing and often need oxygen or breathing support for weeks. Over time, this strain on the lung vessels can lead to pulmonary hypertension, which builds slowly rather than appearing at birth.
This matters more in India than many parents realise. India records about 3 million preterm births each year, the highest number of any country and more than a fifth of the world total, according to the WHO and UNICEF. More premature babies surviving is good news, but it also means more at risk of BPD and its complications.
The risk of pulmonary hypertension rises with how severe the lung disease is. One large review found high lung pressure in about 5% of babies with mild BPD, 18% with moderate BPD, and 41% with severe BPD (BPD-PH meta-analysis). Because the pressure creeps up quietly, specialists often screen premature babies with moderate or severe BPD using a heart scan, so it can be caught early.
How it is diagnosed in babies
Diagnosis starts with an echocardiogram, a painless scan that estimates lung pressure and checks the heart. In selected babies, a specialist may advise a cardiac catheter test to measure the pressure directly.
The echocardiogram is safe even for tiny premature babies, and it also rules out a heart defect. In premature babies with significant BPD, it is often repeated over time, because pulmonary hypertension can develop later.
How pulmonary hypertension in newborns is treated
Treatment has two parts: supporting the baby’s breathing and oxygen, and treating the cause. The approach depends on which form the baby has, so care is always planned by a specialist team.
Approach
What it does
Breathing and oxygen support
Keeps oxygen levels safe while the lungs recover, in a neonatal unit.
Inhaled nitric oxide
A gas that relaxes the lung arteries, used mainly in PPHN.
PH medicines
Drugs such as sildenafil help open the lung arteries in longer-lasting cases.
Treating the cause
Managing infection, repairing a diaphragmatic hernia, or treating the lung disease behind BPD.
ECMO
A heart-lung bypass machine, kept for the most severe PPHN.
For premature babies with BPD, treating the lung disease itself is central: careful oxygen use, good nutrition for growth, and long follow-up. Medicines to lower lung pressure may be added when a specialist advises.
The outlook
The outlook depends on the cause and how early it is treated. Many babies with PPHN recover fully. Babies with BPD or underdeveloped lungs need longer care, but many still do well with the right support.
PPHN often settles once the baby is over the first difficult days. Pulmonary hypertension linked to BPD or lung problems takes longer and needs close follow-up as the child grows. Across all forms, catching it early and treating the cause gives the best chance of a good result.
Getting your baby the right care early
Pulmonary hypertension in newborns and premature babies is easy to miss, because it hides behind breathing trouble that already worries every parent in a neonatal unit. Yet early diagnosis and specialist care change the outlook.
Dr Prashant Bobhate is a paediatric cardiologist who focuses on pulmonary hypertension in children, from newborns with PPHN to premature babies with BPD. He offers full assessment, including echocardiography and cardiac catheterisation, and plans treatment around each baby’s cause and stage. If your newborn or premature baby has been told they have high lung pressure, book a consultation for a clear, expert opinion.
Mascarenhas D, et al. Pulmonary hypertension in preterm neonates with bronchopulmonary dysplasia: a meta-analysis. Archives of Disease in Childhood: Fetal and Neonatal Edition, 2025. https://fn.bmj.com/content/110/4/344
Cardiopulmonary rehabilitation for PAH is a supervised programme of tailored exercise, monitoring, and education. It is not the same as a normal gym routine.
Current guidelines recommend it for people whose PAH is stable and who are already on the right medicines.
A specialist decides whether it is safe for you and how it should run. This is not something to begin on your own.
The clearest proven benefits are better walking ability and better quality of life. Rehabilitation is not a cure.
A programme can blend gentle aerobic activity, light strength work, breathing training, and education, built up slowly.
In India, expert guidance supports structured rehabilitation delivered in supervised, home, or hybrid forms, with low-cost additions such as supervised yoga.
If you live with pulmonary arterial hypertension (PAH), you may have been told to take it easy and avoid effort. For many years, that was the usual advice. It has changed.
Doctors now know that the right kind of exercise, done under supervision, can help many people with PAH feel better and do more. That planned programme is called cardiopulmonary rehabilitation for PAH. You may also see it described as pulmonary rehabilitation for PAH, or as pulmonary hypertension rehabilitation. This guide explains what it involves, who it suits, how it is kept safe, and what the evidence actually shows.
If you live with pulmonary arterial hypertension (PAH), you may have been told to take it easy and avoid effort. For many years, that was the usual advice. It has changed.
Doctors now know that the right kind of exercise, done under supervision, can help many people with PAH feel better and do more. That planned programme is called cardiopulmonary rehabilitation for PAH. You may also see it described as pulmonary rehabilitation for PAH, or as pulmonary hypertension rehabilitation. This guide explains what it involves, who it suits, how it is kept safe, and what the evidence actually shows.
What is cardiopulmonary rehabilitation for PAH?
Cardiopulmonary rehabilitation for PAH is a planned, medically supervised programme that uses tailored exercise, close monitoring, and patient education to improve how well you move and live each day.
Cardiopulmonary rehabilitation for pulmonary arterial hypertension is built around your condition, not around a general fitness goal. Some people need more gentle aerobic work, others need light strength training or breathing support. The starting point depends on your symptoms, your exercise capacity, your oxygen levels, your current treatment, and how stable your PAH is.
That is what sets it apart from joining a gym and following a standard plan. Trained staff set the level, watch how your body responds, and build up the effort only when it is safe.
One point matters above all. Rehabilitation is added to your medical treatment. It never replaces your PAH medicines. The2022 ESC/ERS guidelines recommend supervised exercise training for people with PAH who are already on medical therapy, as a strong (Class I, Level A) recommendation.
Why does pulmonary arterial hypertension make physical activity harder?
In PAH, the pressure is too high in the arteries that carry blood from the heart to the lungs. The right side of the heart then has to push harder to move blood through.
During activity, a healthy heart lifts its output to meet the extra demand. In PAH, that lift is limited. So you feel breathless and tired sooner than you expect. Some people also notice dizziness or chest discomfort when they push too hard.
These symptoms are uncomfortable, so it is natural to avoid the things that bring them on. Many people then do less and less. Over time, the body loses fitness, a change called deconditioning, and ordinary tasks feel harder still. The cycle looks like this:
PAH, then harder exertion, then less activity, then deconditioning, then even lower exercise capacity.
Rehabilitation is designed to break the functional side of that cycle. The aim is to rebuild stamina slowly and safely, while keeping exercise within a range your heart can handle.
Who is cardiopulmonary rehabilitation for, and when should it begin?
Guidance is clear on the main group it suits. Supervised exercise training for PAH is recommended for people whose condition is stable and who are already on medical therapy. Rehabilitation usually begins once the condition is clinically stable, not during a flare or a period of change. A pulmonary hypertension specialist judges whether it is right for you and how it should be delivered. The evidence is more limited for people with very severe disease, so the decision is always individual.
An assessment can be especially useful for people who have:
Reduced exercise capacity
Trouble with routine physical activity
Physical deconditioning
Breathlessness or fatigue during effort
Lost confidence with activity
In India, the picture is the same. The2026 PVRI India Taskforce consensus, led by Dr Prashant Bobhate, keeps supervised exercise training as a Class I, Level A recommendation for people with PAH who are stable on their medicines. In short, the Indian expert view matches the international one.
What assessments happen before PAH rehabilitation begins?
A good programme starts with a careful check, not with an exercise session. The team needs a clear picture of where you are before building a plan.
The team may review your medical history, your current PAH treatment, your symptoms, and other conditions that could affect safety. Two tests are used often.
The six-minute walk test
The six-minute walk test (6-minute walk test) measures how far you can walk in six minutes under set conditions. It gives a simple, reliable read on your current exercise capacity. It is usually repeated after a few weeks, so you and your team can see, in plain numbers, whether the programme is helping.
Cardiopulmonary exercise testing (CPET)
Cardiopulmonary exercise testing gives a more detailed look at how your heart, lungs, and muscles respond to effort. It may be used when the team needs to understand what is limiting you, and when the test is available.
Other checks that guide the plan
The team may also look at the factors below. Together, these set a safe starting point and a baseline to measure progress against.
What does a cardiopulmonary rehabilitation programme for PAH include?
A programme usually blends a few parts, each kept gentle and controlled. The exact mix depends on your assessment.
Aerobic activity
Aerobic exercise is the core. It builds stamina using activities such as walking, stationary cycling, stepping, or stair climbing. The2026 PVRI India consensus describes these same activities, at a moderate effort guided by how hard the work feels, in short sessions of around ten to fifteen minutes that are built up gradually over the weeks. Your team sets the exact level for you.
Light strength work
Strength training, also called resistance training, may be added for the main muscle groups, using controlled movements and a resistance level chosen for you. It matters because reduced activity can weaken muscles over time. The focus stays on steady breathing. Holding your breath or straining is avoided, because both can add sudden stress on the heart in PAH.
Breathing and inspiratory muscle training
Some programmes include training for the muscles you use to breathe. The India consensus lists this as a possible add-on alongside aerobic and strength work. It supports the rest of the plan rather than replacing it.
Warm-up, cool-down, and education
Each session usually opens with a gentle warm-up and closes with a cool-down, so your effort rises and falls slowly rather than in sudden jumps. Education runs through the whole programme. You learn to pace yourself, save energy for what matters, spot warning signs early, use oxygen correctly if it is prescribed, and know when to seek advice.
The Indian consensus adds a useful local touch here. It supports blending culturally relevant, low-cost options, such as supervised yoga-based breathing and movement, into standard programmes, which makes rehabilitation easier to keep up in Indian settings.
How is exercise monitored and kept safe during cardiopulmonary rehabilitation for PAH?
Monitoring is one of the main things that separates structured rehabilitation from ordinary exercise. It is how a programme stays safe.
During sessions, the team keeps an eye on how you respond. The2026 PVRI India consensus sets out what to watch:
The point of monitoring is not to make you anxious about every number. It lets the team adjust the session when needed. The team also sets your targets. This is why you should not fix your own oxygen or heart-rate goals from a home device. Oxygen support, if you need it, is guided by your clinical team, not by a pulse oximeter reading alone.
What benefits does cardiopulmonary rehabilitation offer people with PAH, and what does the evidence show?
Research on exercise training in pulmonary arterial hypertension points to clear functional gains. The strongest evidence links rehabilitation to better exercise capacity and better quality of life, rather than to curing the disease.
In a large European trial of 116 people with PAH or a related condition called CTEPH, all already on medication, a supervised training programme improved the six-minute walking distance by about 34 metres more than usual care. The same study found better quality of life, better functional class, and higher peak oxygen uptake, and the programme was judged safe when run properly (Grünig et al., 2021).
Wider reviews that pool many studies point the same way, with average gains in walking distance often around 50 metres or more, and serious problems uncommon in stable, supervised patients (ERS statement). In day-to-day terms, that can mean walking further before you stop, managing stairs more easily, or getting through normal tasks with less breathlessness.
What the evidence does not show is just as important. Rehabilitation is not a cure. It does not reliably lower lung pressure for everyone, and it is not a reason to change or stop your PAH medicines. The honest promise is better function and quality of life, as one part of complete care.
When should someone with PAH pause or stop exercising?
Certain symptoms during exercise need attention straight away. If you are in a programme, your team will have told you what to watch for and what to do.
Stop or ease off, and get advice, if you develop:
Chest pain or discomfort
Fainting or near-fainting
Strong dizziness or lightheadedness
New or unusual palpitations
Breathlessness that is severe or clearly beyond the expected effort
Any other symptom your team has flagged for you
Your rehabilitation team also watches for signs that your heart is struggling or that your condition is changing. These warning signs are a key reason why starting under supervision matters so much in PAH.
How is cardiopulmonary rehabilitation different from everyday exercise for PAH?
Everyday activity and cardiopulmonary rehabilitation overlap, but they are not the same thing. For someone with PAH, the difference is mostly about assessment, prescription, and monitoring.
Everyday exercise can be done on your own, fits around your daily life, and allows you to choose your own intensity. It often focuses on improving general fitness without clinical monitoring.
In contrast, cardiopulmonary rehabilitation begins with a clinical assessment and is tailored to your pulmonary arterial hypertension (PAH) and test results. Exercise intensity is set according to your individual needs, with the aim of safely improving your physical function. The program also includes clinical monitoring and gradual progression to support safe, effective exercise.
So the real question for someone with PAH is not whether exercise is good or bad. It is what type of activity suits you, at what level, and under what conditions. That guided, monitored approach is what makes exercise rehabilitation for PAH different from simply doing more.
Can cardiopulmonary rehabilitation for PAH continue at home?
Often, yes. Many people start under supervision and then carry on at home with a plan the team has set and keeps reviewing. The2026 PVRI India consensus recognises supervised, home-based, and hybrid models as valid ways to deliver rehabilitation, which helps people who live far from a centre.
The supervised start still matters. Home exercise works as a continuation of a monitored programme, not as a replacement for it. You keep to the targets your team set, watch for the same warning signs, and attend review visits so the plan can be checked and updated. If your symptoms change, the home part may need to pause while your specialist takes another look.
Speak to a pulmonary hypertension specialist before you start
Cardiopulmonary rehabilitation for PAH works best as one part of complete, specialist-led care. The right plan depends on your tests, your symptoms, and how your heart is coping, which is why the first step is always a proper assessment. At the Children’s Heart Centre, Kokilaben Dhirubhai Ambani Hospital in Mumbai, Dr Prashant Bobhate runs a dedicated, multidisciplinary pulmonary hypertension clinic, one of the first of its kind in Western India. If you or your child lives with PAH, talk to a pulmonary hypertension specialist about whether rehabilitation is suitable, and how to begin it safely.
Exercise for pulmonary arterial hypertension is no longer off-limits. The right activity, done safely, can help many people feel and function better.
It works best for people whose PAH is stable and who are on their medicines, with a specialist’s go-ahead.
Gentle aerobic activity such as walking, light strength work, and breathing exercises are the usual building blocks.
Keep the effort moderate. A simple guide is the talk test: you should be able to speak in short phrases, not sing, and not be gasping.
Avoid heavy lifting with breath-holding, high-intensity bursts, and exercising in extreme heat or at altitude.
Stop and seek advice for chest pain, fainting, strong dizziness, palpitations, or unusual breathlessness.
The question most people with PAH want answered is a practical one. What am I actually allowed to do? Can I still take the stairs, carry the shopping, or get back to some form of exercise?
Exercise for pulmonary arterial hypertension is safe and worthwhile for many people, but how you do it matters more than how much. The type of activity, the intensity, and knowing when to stop all have to fit your condition. This guide sets out which activities are safe, how to judge the right effort, what to avoid, and the warning signs to take seriously.
Can you exercise with pulmonary arterial hypertension?
People often ask, can you exercise with pulmonary hypertension safely? Yes, many people with PAH can exercise, as long as the plan is right for them and their condition is stable. Exercise is no longer treated as something to avoid.
Current guidance supports being active within your symptom limits (Royal Free NHS). The stronger evidence is for supervised exercise training in people who are already on medical treatment, which the2022 ESC/ERS guidelines now recommend as a Class I, Level A step.
Two conditions sit behind that “yes”. Your PAH should be stable, not in a flare, and you should already be on the right medicines. Safe exercise for pulmonary hypertension supports your treatment. It does not replace it. A pulmonary hypertension specialist should confirm that activity is right for you before you start.
What are the benefits of exercise for people with PAH?
The main benefits are better stamina, easier breathing during daily tasks, and a better quality of life. Exercise does not cure PAH, and it will not lower your lung pressure on its own, but it can help you do more with less effort.
The evidence is encouraging. In a large European trial of people with PAH and a related condition, a supervised training programme improved how far people could walk in six minutes by about 34 metres more than usual care, along with better quality of life and fitness (Grünig et al., 2021). Wider reviews point the same way, and serious problems are uncommon in stable, supervised patients (ERS statement).
In plain terms, that can mean climbing stairs more easily, walking further before you need to stop, and feeling steadier through a normal day. Set realistic goals. The aim is to feel and function better, not to train like an athlete.
Why does exercise for PAH need to be individualised?
There is no single workout that suits everyone with PAH, and no fixed set of exercise guidelines for PAH will fit every person. What is safe for one person can be too much for another, so exercise for pulmonary arterial hypertension has to be built around you.
Several things shape it: how severe your PAH is, your symptoms, your exercise tolerance in PAH, how far you can already walk, your oxygen levels, how your heart rate responds, your other health conditions, and your current treatment. A history of fainting or irregular heartbeats matters too.
This is why general fitness rules do not transfer well. A plan copied from a friend, a video, or a standard gym programme does not account for any of the above. Your specialist and, where possible, a trained physiotherapist set the starting level and decide how to build it up.
What types of exercise are safe for people with PAH?
What exercises are safe for pulmonary arterial hypertension? Most safe programmes mix a few simple parts. The aim is steady, gentle activity, not hard training.
Walking and gentle aerobic activity
Aerobic activity is the main building block. Good options include walking, stationary cycling, and swimming, all kept at an easy level and built up slowly. The2026 PVRI India consensus, led by Dr Prashant Bobhate, lists walking, cycling, stepping, and stair climbing as suitable aerobic choices, done at a moderate effort and increased gradually over the weeks. Regular physical activity with PAH is about frequency and consistency, not speed, so aerobic exercise for PAH works best little and often.
Light strength training
Light strength work, also called resistance training, can be added for the main muscle groups, using controlled movements and an easy resistance level. It helps because being less active can weaken muscles over time.
One rule matters here. Do not hold your breath or strain while lifting. People with PAH are advised to avoid this kind of straining, because it can trigger fainting (Valsalva study). The safe habit is to breathe out on the effort and keep breathing steady throughout.
Breathing exercises and gentle yoga
Breathing exercises for pulmonary hypertension can support the muscles you use to breathe. Gentle, low-impact movement such as yoga may also help. The Indian consensus supports adding supervised yoga-based breathing and movement to standard programmes, as a low-cost option that suits Indian settings. These are add-ons, not a replacement for aerobic activity or your medicines.
How hard should you exercise with PAH?
Keep it moderate. This is one of the most important parts of safe exercise with pulmonary arterial hypertension, and it is also where generic fitness advice goes wrong.
Ignore rules like “train at 70% of your maximum heart rate”. That kind of formula is not made for PAH. A better guide is how the effort feels. The2026 PVRI India consensus recommends a moderate intensity, judged by perceived exertion, in short sessions of around ten to fifteen minutes that are built up slowly.
A simple everyday check is the talk test. At a safe, moderate effort you should be able to speak in short phrases. If you can sing, you can probably do a little more. If you cannot get a few words out, you are working too hard and should ease off. Exercise intensity for PAH is personal, so your team may adjust this for you.
What should you watch while exercising with PAH?
Pay attention to how your body responds, not just to numbers on a device. Monitoring is a core part of safe exercise for pulmonary arterial hypertension, and of PAH exercise safety.
During activity, the things worth noticing are your symptoms, how breathless you feel, any dizziness, and how well you are coping overall. In supervised settings, the2026 PVRI India consensus also tracks oxygen levels, heart rate and rhythm where monitoring is available, blood pressure, and perceived exertion.
A word on gadgets. A home pulse oximeter can give useful information, but it does not replace your care team. Do not set your own oxygen targets from a reading, and do not use supplemental oxygen to push through harder sessions. Those decisions belong to your specialist.
What types of exercise should people with PAH avoid?
Some activities carry more risk and are best avoided unless your specialist says otherwise.
High-intensity interval training and anything that spikes your heart rate fast
Heavy weightlifting, especially with breath-holding or straining
Exercising to the point of exhaustion
Competitive or all-out effort that you cannot control
Exercising in extreme heat or at high altitude, where the air holds less oxygen
Any exercise on a day you feel unwell or more breathless than usual
This is not a simple list of “good” and “bad” exercises. The same activity can be fine at a gentle level and unsafe if pushed too hard. Supervised programmes sometimes use short bursts of easy activity with rest in between for people who cannot manage a long session, but that is planned and watched, not improvised. When in doubt, check with your team.
What warning signs mean you should stop exercising?
Stop the activity and get advice if any of these happen. These are the body’s signals that it is being pushed too far.
Chest pain or tightness
Fainting or feeling close to fainting
Strong dizziness or lightheadedness
A racing, pounding, or irregular heartbeat
Breathlessness that is severe or far beyond the normal effort
Any other symptom your care team has told you to watch for
If any of these appear, do not try to push through. Rest, and contact your specialist. Severe or lasting symptoms need urgent medical attention. These warning signs are the main reason it is safer to begin exercise with guidance rather than alone.
Is walking a good exercise for people with PAH?
Yes, walking is often one of the best starting points. It is easy to do, needs no equipment, and the pace and distance can be adjusted to how you feel on the day.
That said, walking with PAH still needs care. For anyone walking with pulmonary hypertension, the right pace, distance, and frequency depend on your symptoms and your stage of the disease. Start gently, build up slowly, and use the talk test to keep the effort moderate. If a route leaves you very breathless or dizzy, scale it back and mention it to your team.
Can people with PAH do strength training safely?
Yes, strength training with PAH can be safe when it is light, controlled, and done with the right breathing. The goal is to keep your muscles working, not to lift heavy.
Use an easy resistance, move in a slow and controlled way, and breathe out on the effort. The one thing to avoid is holding your breath or straining, which raises the risk of fainting in PAH. If a weight makes you grip, hold your breath, or clench, it is too heavy. Your team can set a safe level and show you the right technique.
How is exercise for PAH different from cardiopulmonary rehabilitation?
Everyday exercise and a formal programme overlap, but they are not the same. Rehabilitation is the structured, clinical version, built around assessment and monitoring.
If you want the full picture of the supervised, programme-based route, see our guide to cardiopulmonary rehabilitation for PAH. For many people, the two work together: a supervised start, then safe activity as part of daily life. The modern view of exercise and pulmonary arterial hypertension is not about avoidance, but about doing the right amount in the right way.
Make activity work for you
The honest summary is simple. For most people with stable PAH, the risk lies in the extremes, in doing nothing and losing fitness, or in pushing too hard and ignoring the warning signs. Safe exercise for pulmonary arterial hypertension sits between the two, and the sweet spot is different for every person.
That is why a short conversation with your specialist is worth more than any general plan. They can look at your symptoms, your tests, and your treatment, and tell you where your own limits sit and how to move them over time.
Dr Prashant Bobhate sees this regularly at the Children’s Heart Centre, Kokilaben Dhirubhai Ambani Hospital in Mumbai, which runs one of Western India’s first dedicated pulmonary hypertension clinics. If you or your child has PAH and wants to be more active, ask a pulmonary hypertension specialist what is safe for you, and build from there.
Disclaimer – This article is intended for educational purposes and does not replace individualised medical advice from a pulmonary hypertension specialist or rehabilitation professional.
The early signs in children are quiet. Parents often notice poor feeding, slow weight gain, fast breathing, or a bluish tinge before anything else.
In India, most childhood pulmonary hypertension is linked to a heart defect present from birth (congenital heart disease).
Newborns can have a short-term form called PPHN, which is treated in a special care unit and often settles.
Timing matters. Many heart defects can be closed with good results if treated early, before the lung arteries are damaged for good.
Diagnosis starts with a painless echocardiogram, and is confirmed with a cardiac catheter test.
With the right treatment, many children do well. Early referral to a paediatric heart specialist gives the best chance.
Children do not describe their symptoms the way adults do. A breathless adult will say so. A baby simply feeds poorly, tires, and falls behind on the growth chart. This is why pediatric pulmonary hypertension is often spotted late, and why the signs parents notice first matter so much. This guide covers the full picture: the signs at each age, the causes, how it is diagnosed, how it is treated, and what the outlook looks like. If your child already has a diagnosis, you can read about pulmonary hypertension treatment and specialist care.
What is pulmonary hypertension in children?
Pulmonary hypertension in children is high blood pressure in the arteries that carry blood to the lungs. The right side of the heart then has to work much harder, and over time it tires. In children, the cause is usually a heart defect present from birth, which makes it different from the adult form.
The lung arteries are normally soft and open. In pulmonary hypertension they become narrow or stiff, so the heart must push harder to move blood through the lungs. Over months and years, this strain affects how a child grows, feeds, and plays.
The causes in children are not the same as in adults. In adults, pulmonary hypertension is usually linked to long-standing heart or lung disease. In children, the leading causes are congenital heart disease, an unknown cause called idiopathic PAH, and problems with lung development (pediatric PH review, 2024). Because the mix is different, children need care from a specialist who treats them specifically.
The signs parents notice first
In babies, the first signs are usually feeding trouble, sweating during feeds, fast breathing, poor weight gain, and a bluish tinge around the lips. In older children, the signs show up during play, as tiring quickly, blue spells, or fainting on exertion.
Because young children cannot explain what they feel, parents and carers are often the first to spot that something is wrong. The signs differ by age.
Signs of high lung pressure in babies
The clearest clue in a baby is that feeding becomes hard work. Watch for:
Feeding difficulties, especially tiring or pausing often during feeds
Sweating during feeds, sometimes with a damp head or neck
Faster breathing than usual, even at rest
Poor weight gain, or weight falling behind on the growth chart (sometimes called failure to thrive)
A bluish tinge around the lips, tongue, or nails (cyanosis)
Signs in toddlers and older children
Older children can move around, so the signs appear during activity:
Getting tired or breathless quickly during play
Blue spells, where the lips or face turn dusky during crying or effort
Fainting or near-fainting during exertion
Complaints of chest pain or a racing heartbeat
Being unusually quiet, or sitting out games other children manage
A single sign on its own is rarely a worry. But fainting during activity, or any blue spell, needs prompt medical review. These are not signs to watch and wait on.
Pulmonary hypertension in newborns (PPHN)
Pulmonary hypertension in newborns is called persistent pulmonary hypertension of the newborn, or PPHN. It happens when a baby’s lung circulation does not switch over normally after birth, so lung pressure stays high. It usually appears within hours of birth and is treated in a neonatal unit.
Before birth, a baby’s lungs are not used for breathing, so blood largely bypasses them. At birth, the lung arteries should open up and relax. In PPHN, they stay tight, so the baby cannot take in enough oxygen (Merck Manual, PPHN).
The main PPHN symptoms are fast breathing, grunting or chest pulling-in, and severe blue colouring that does not improve much even when oxygen is given. It is more common in babies born at term or past their due date.
Treatment is given in a neonatal intensive care unit. It may include oxygen, a calm environment, support with breathing, and a gas called inhaled nitric oxide that helps the lung arteries relax. In severe cases, a heart-lung bypass machine (ECMO) is used. Many babies recover well with timely care, though PPHN can be serious, so it is always treated as urgent.
What causes pulmonary hypertension in children?
The most common cause of pulmonary hypertension in children is congenital heart disease, especially holes or abnormal connections called shunts. Other causes include an unknown trigger (idiopathic PAH), problems with lung development such as in premature babies, and newborn PPHN.
Congenital heart disease is by far the leading cause in India. Many babies are born with a hole or an abnormal connection between the heart’s chambers or vessels, known as a shunt lesion. Common examples are a hole between the lower chambers (ventricular septal defect), a hole between the upper chambers (atrial septal defect), and an open vessel that should have closed after birth (patent ductus arteriosus). These let extra blood flow into the lungs. Over time, that extra flow and pressure can damage the lung arteries and cause pulmonary hypertension.
The Indian data is clear on how common this is. In the PULMOEAST study from eastern India, congenital heart disease was the single biggest cause of pulmonary hypertension, with shunt lesions present in nearly 59% of patients. A paediatric pulmonary hypertension registry near Mumbai found the same pattern, with about 81% of 100 children having pulmonary hypertension linked to congenital heart disease.
The other main causes are:
Cause
What it is
Congenital heart disease
Holes and shunts present from birth that send extra blood to the lungs
Idiopathic PAH
High lung pressure with no identifiable cause, which tends to be more serious
Developmental lung disease
Underdeveloped lungs and vessels, often in babies born very early (for example, bronchopulmonary dysplasia)
PPHN
The short-term newborn form described above
Inherited PAH
A rare form caused by a gene change that can run in families
Why early treatment matters so much
When a heart defect is closed early, the lung arteries often recover and the child can do very well. If it is left too long, the damage can become permanent, the shunt can reverse, and surgery is no longer safe. This is why early referral changes outcomes.
If the defect is left too long, the lung arteries stiffen, the pressure keeps rising, and eventually blood starts flowing the wrong way through the hole. This advanced stage is called Eisenmenger syndrome. At that point the child turns blue more easily, and closing the defect is no longer safe. The window for a straightforward repair has closed.
This is not a rare, distant risk in India. In the Mumbai paediatric registry, nearly half of the children had already reached Eisenmenger syndrome by the time they were seen, which points to how often these children are referred late. The message for parents is simple: a known heart defect should never sit on a long “watch and see” plan without a specialist’s advice.
How pulmonary hypertension in children is diagnosed
Diagnosis starts with an echocardiogram, a painless scan that estimates lung pressure. If it suggests pulmonary hypertension, the specialist usually confirms it with a cardiac catheter test, which measures the pressure directly and shows whether a defect can still be safely closed.
An echocardiogram uses sound waves to look at the heart and estimate the pressure in the lung arteries. It is safe for babies and children and is the usual first step. You can read what an echo report means in our guide to echocardiography for children with suspected PH.
If the echo points to raised pressure, the specialist often advises a cardiac catheterisation. A thin tube is passed into the heart to measure the lung pressure and resistance directly. In children with a shunt, this test is important because it shows whether the defect can still be closed safely. The team may also do tests to find the exact cause, such as blood tests and scans. The aim at every step is the same: confirm the diagnosis, find the cause, and decide what can be treated.
How pediatric pulmonary hypertension is treated
Pediatric pulmonary hypertension treatment has two parts: treating the cause, and easing the pressure in the lungs. Where a heart defect can be safely closed, that is often the main fix. Alongside this, children may need medicines that relax the lung arteries, oxygen, and in severe cases, specialist procedures.
Treatment is always built around the child and the cause. The main approaches are:
Approach
What it does
Treating the cause
Closing a shunt, where it is still safe to do so, can greatly improve or resolve the pressure
PH medicines
Drugs such as sildenafil and tadalafil, or bosentan and similar medicines, help relax and open the lung arteries
Oxygen
Supports children whose oxygen levels drop, used as the specialist advises
Procedures for severe disease
For end-stage cases, options such as a Potts shunt or, rarely, lung transplant may be considered
Newborn care (PPHN)
Oxygen, inhaled nitric oxide, and breathing support in a neonatal unit
For children with a shunt who are close to the limit of safe closure, specialists sometimes use a “treat and repair” approach. Here, PH medicines are started first to improve the lung arteries, and closure is reconsidered later. Decisions like these are made only after a cardiac catheter test and careful specialist review.
One honest point matters. For some forms, especially idiopathic PAH, pulmonary hypertension cannot be fully cured, but it can be managed well, and modern medicines have improved how children live with it. For many congenital cases caught early, the outlook is far better.
The outlook for children with pulmonary hypertension
The outlook depends on the cause and how early it is treated. Children whose heart defect is closed early often do very well. Idiopathic cases are more serious but are helped by modern treatment. Across the board, early diagnosis gives the best chance of a good result.
A child who is treated before the lung arteries are badly damaged has the best outlook, and in many congenital cases the problem can be resolved. A child referred late, after Eisenmenger syndrome has set in, faces a harder road, though treatment can still improve comfort and quality of life.
This is why parents should act on early signs rather than wait. The difference between an early referral and a late one can be the difference between a treatable defect and a lifelong condition.
When should you see a paediatric cardiologist?
See a paediatric cardiologist if your child shows signs of high lung pressure, or if a known heart defect is causing symptoms. Early referral is a safety step, not a sign of bad news. Most children referred early turn out to have a treatable problem.
Reasons to seek a referral include:
A heart murmur with poor feeding or slow weight gain
Breathlessness, blue spells, or fainting during activity
A known congenital heart defect that seems to be getting worse
An echocardiogram that suggests raised lung pressure
Parents can also ask for a referral themselves. If something about your child’s breathing, feeding, or energy worries you, it is reasonable to request a paediatric cardiology opinion. For adults with similar symptoms, see our guide to pulmonary hypertension symptoms in adults.
Getting your child the right care early
Childhood pulmonary hypertension is easy to miss, because the early signs look like everyday feeding or tiredness issues. Yet it is also a condition where early action can change everything. Caught in time, many heart defects can be repaired with excellent results.
Dr Prashant Bobhate is a paediatric cardiologist who focuses on pulmonary hypertension in children, from newborns with PPHN to older children with congenital heart disease. He offers full assessment, including echocardiography and cardiac catheterisation, and plans treatment around each child’s cause and stage. If your child shows any of the signs in this guide, or has a heart defect that worries you, book a consultation for a clear, expert opinion.
The first symptom of pulmonary hypertension is almost always breathlessness during effort that never used to tire you. It builds slowly, so it is easy to miss.
Tiredness, dizziness, palpitations, and chest tightness often follow. Swelling and fainting tend to come later.
The early signs copy common problems like asthma, anaemia, or simply being unfit, which is a main reason the condition is found late.
A loud second heart sound and swelling in the legs or tummy are signs a doctor looks for.
Some groups are at higher risk, including people with heart, lung, or connective tissue disease.
New or worsening breathlessness with no clear cause is worth a heart check, including an echocardiogram.
If you get breathless climbing stairs that you managed easily a year ago, it is natural to blame age, weight, or a busy life. Often that is all it is. But sometimes breathlessness that keeps creeping up is an early sign of a problem in the heart and lungs.
This guide explains the pulmonary hypertension symptoms adults notice, how they change over time, and when breathlessness is worth a closer look. If you already have a diagnosis, you can read about your pulmonary hypertension treatment options next.
What is pulmonary hypertension, and why does it cause symptoms?
Pulmonary hypertension is high blood pressure in the arteries that carry blood from the heart to the lungs. The right side of the heart has to pump harder against that pressure, and over time it tires. Most symptoms come from this strain, and they usually show up during activity first.
In a healthy body, the lung arteries are soft and open, so blood flows through them easily. In pulmonary hypertension, these arteries become narrow or stiff. The right side of the heart then has to push much harder to move blood through the lungs.
During activity, a healthy heart lifts its output to meet demand. In pulmonary hypertension, that lift is limited. So you feel breathless and tired sooner than you expect. This is why early pulmonary hypertension shortness of breath shows up during effort, like stairs or a brisk walk, long before it appears at rest.
Pulmonary hypertension can affect adults and children. The causes and signs differ between them, which we cover in our guide to pulmonary hypertension in children. This article focuses on adults.
What are the early signs of pulmonary hypertension in adults?
The earliest sign of pulmonary hypertension in adults is breathlessness during activity that used to feel easy. Fatigue, dizziness, and a racing heartbeat often come next. These early signs are mild and easy to explain away, which is why many people wait months before seeing a doctor.
According to the 2022 ESC/ERS guidelines, the cardinal symptom is breathlessness on steadily smaller amounts of effort. The early signs of pulmonary hypertension usually appear in this order:
Breathlessness when you climb stairs, walk uphill, or carry shopping
Unusual tiredness that rest does not fully fix
Dizziness or feeling light-headed, especially on exertion
A racing or pounding heartbeat (palpitations)
Mild chest tightness during activity
Needing to stop and rest more often than before
No single sign proves you have pulmonary hypertension. Each one has many causes. But when two or more appear together and slowly get worse, it is worth asking your doctor to look further.
How do symptoms change as it progresses?
Pulmonary hypertension symptoms worsen in stages. Early on, you only notice them during effort. In the moderate stage, light activity brings them on. In the advanced stage, you can feel breathless even at rest, often with swelling and fainting spells.
The table below shows how the picture usually changes. Not everyone moves through it at the same speed, and the right treatment can slow it down.
Stage
What you feel
Daily impact
Early
Breathless on stairs or brisk walks, mild tiredness, occasional dizziness
You still manage most tasks, but you slow down
Moderate
Breathless on light activity, clear fatigue, palpitations, mild ankle swelling
Everyday chores like cooking or bathing feel harder
Advanced
Breathless at rest, fainting spells, chest pain, swelling in the legs and tummy, bluish lips
Simple movement is a struggle, and you need regular help
Two symptoms deserve a special mention. Pulmonary hypertension chest pain usually appears during activity and feels like pressure rather than a sharp stab. It can come from the strained right heart, or from a widened lung artery pressing on nearby structures. Fainting, or near-fainting, on mild effort is a more serious sign and should always be checked quickly.
Some people also notice breathlessness when they bend forward, for example to tie a shoelace. Doctors call this bendopnoea, and it can be an early clue.
What are the signs of right heart failure in pulmonary hypertension?
As pulmonary hypertension advances, the right side of the heart can start to fail. The clearest signs are swelling in the ankles, legs, and tummy, raised veins in the neck, a swollen or tender tummy, and loss of appetite. These point to a heart that is struggling to keep up.
When the right heart cannot pump well, blood backs up into the body. Fluid then collects where gravity pulls it. The link between swelling and pulmonary hypertension is important, because sudden swelling is often the sign that tips a late diagnosis.
Signs of right heart strain include:
Swelling in both ankles and legs (oedema)
A swollen tummy from fluid build-up (ascites)
Fullness or discomfort under the right ribs, where the liver sits
Raised, visible veins in the neck
Loss of appetite or feeling full quickly
Sudden weight gain over a few days, which is fluid rather than fat
A quick rise in weight with new swelling should be reported to your doctor without delay. It usually means fluid is building up faster than the body can clear it.
How is the WHO functional class used to grade symptoms?
Doctors use the WHO functional class to describe how much pulmonary hypertension limits daily life. It runs from Class I, with no limit, to Class IV, with symptoms even at rest. The class helps guide treatment and shows whether you are improving.
This simple grading is used at almost every specialist visit. It is based on the 2022 ESC/ERS guidelines.
Class
What it means
Typical activity limit
Class I
No limit on physical activity
Ordinary activity causes no breathlessness, tiredness, chest pain, or dizziness
Class II
Slight limit
Comfortable at rest, but ordinary activity brings on symptoms
Class III
Marked limit
Comfortable at rest, but light activity, less than usual, brings on symptoms
Class IV
Severe limit
Breathless or tired even at rest, with signs of right heart strain
Your class is not fixed. Many patients move from Class III back towards Class II once the right treatment begins. That shift is one of the clearest signs that treatment is working.
How are the symptoms different from asthma or COPD?
Pulmonary hypertension is often mistaken for asthma, COPD, anaemia, or anxiety, because breathlessness and tiredness are shared by all of them. The clue is that pulmonary hypertension breathlessness keeps worsening and does not respond well to inhalers or standard asthma treatment.
Misdiagnosis is common. In a large multinational survey, about 41% of people with pulmonary arterial hypertension were first misdiagnosed, and they saw an average of nearly three doctors before getting the right answer. Breathing tests can add to the confusion, because a mildly abnormal result does not rule pulmonary hypertension in or out.
The table below shows the practical differences a reader can notice.
Clue
Asthma or COPD
Pulmonary hypertension
Wheeze
Common
Usually absent
Response to inhalers
Often helps
Little or no lasting help
Pattern of breathlessness
Can come in attacks, often with triggers
Steady, slowly worsening with effort
Fainting on effort
Uncommon
A known warning sign
Leg or tummy swelling
Uncommon
Can appear as it advances
If you are being treated for asthma or a chest problem and you are not improving, it is reasonable to ask for a heart check. This simple step catches cases that are otherwise missed for years.
Why is pulmonary hypertension so often diagnosed late?
Pulmonary hypertension is diagnosed late because its early signs copy far more common conditions, and because it is rare, so doctors rarely suspect it first. Studies show the gap between the first symptom and diagnosis is often more than two years.
Across large international studies, the delay from first symptom to confirmed diagnosis is frequently over two years, and in some groups close to four years, as the DELAY study found. By the time pulmonary hypertension is confirmed, it has usually progressed.
The Indian picture tells the same story. In the PROKERALA registry, the largest study of pulmonary hypertension in Indian adults with over 2,000 patients, around 59% were already in WHO functional class II by the time they were diagnosed. In plain terms, everyday activity was already limiting them. A separate study from eastern India, PULMOEAST, found that most patients were only referred to a specialist once their pulmonary hypertension was already moderate or severe.
The lesson is simple. Breathlessness that is not explained, and not improving, deserves a proper heart and lung assessment rather than another round of the same treatment.
Who is at higher risk of pulmonary hypertension?
Some people face a higher risk and should treat new breathlessness more seriously. These include people with heart or lung disease, those with connective tissue conditions like scleroderma, anyone with a family history of pulmonary hypertension, and people born with heart defects.
Pulmonary hypertension can appear on its own, but it is often linked to another condition. Knowing your risk helps you act sooner.
Heart and lung conditions
Long-standing left heart disease and chronic lung diseases such as COPD are among the most common reasons for raised lung pressure worldwide. If you already live with one of these and your breathlessness changes, mention it to your doctor.
Connective tissue disease
Conditions like scleroderma (systemic sclerosis) and lupus raise the risk of pulmonary arterial hypertension. Pulmonary arterial hypertension affects up to around 15% of people with connective tissue disease, and systemic sclerosis carries the highest risk, as set out in specialist screening recommendations. Because the symptoms are vague, regular screening is advised for people with scleroderma, even before symptoms begin.
Family history and inherited risk
A small number of cases run in families, caused by a gene change. If a close relative has had pulmonary arterial hypertension, tell your doctor, as monitoring may be offered.
Other risk factors
Pulmonary arterial hypertension is more common in women than men. Risk also rises with age in connective tissue disease. A history of certain appetite-suppressant drugs, some other medicines, HIV, liver disease, or a heart defect present from birth can all play a part. People born with a heart defect are a particularly important group in India, which is why early specialist review matters.
Can pulmonary hypertension symptoms come and go?
Early on, symptoms can feel like they come and go. On a rested day you may feel almost normal, while a busy day brings the breathlessness back. This on-and-off pattern is one reason people delay seeing a doctor, because a good day feels reassuring.
As the condition advances, symptoms settle in and stop easing off. If your breathlessness swings from day to day but the bad days are slowly getting worse, that is still a clear reason to get checked. The trend over weeks matters more than any single good day.
When should you see a doctor about breathlessness?
See a doctor if your breathlessness is new, steadily worsening, or not explained by a known cause, especially if it comes with dizziness, chest pressure, fainting, or swelling. Breathlessness after hard exercise is normal. Breathlessness during gentle, everyday effort is not.
Treat these as red flags and book an appointment soon:
Breathlessness that keeps worsening over weeks with no clear reason
Fainting or near-fainting during activity
Chest pain or pressure when you exert yourself
Swelling in both ankles, legs, or the tummy
A blue tinge on the lips or fingertips
Breathlessness treated as asthma that is not getting better
If any of these apply, do not wait for a routine review. You can learn what a specialist assessment involves on the pulmonary hypertension treatment page, or speak to a pulmonary hypertension specialist directly.
What happens after you see a specialist?
The first test is usually an echocardiogram, a painless scan that estimates lung pressure. If it points to pulmonary hypertension, the specialist arranges further tests to confirm it and find the cause. This step-by-step approach avoids both missed cases and wrong labels.
An echocardiogram is quick and safe, and it is the usual starting point. If it suggests raised pressure, the next tests confirm the diagnosis and sort out the cause, which guides treatment. You can read more in our guide to how pulmonary hypertension is diagnosed.
The aim at every step is the same: find out whether you truly have pulmonary hypertension, identify the cause, and start the right treatment early. Catching it earlier gives treatment the best chance to help.
Getting the right answer, sooner
Breathlessness that keeps creeping up is easy to dismiss, and easy to misread. The safest step is a proper assessment rather than months of guessing, because pulmonary hypertension responds far better to treatment when it is caught early.
Dr Prashant Bobhate runs a dedicated pulmonary hypertension clinic at Kokilaben Dhirubhai Ambani Hospital in Andheri West, Mumbai, where adults and children with suspected or confirmed pulmonary hypertension are assessed and managed. Care covers accurate diagnosis, including right heart catheterisation where needed, and long-term treatment planning. If your breathlessness is unexplained or getting worse, book a consultation to find out what is really going on.
Small M, et al. The diagnostic journey of pulmonary arterial hypertension patients: results from a multinational real-world survey. Therapeutic Advances in Respiratory Disease, 2024. https://doaj.org/article/69c1d96baf1a4edeae6783910daab407
Brown LM, et al. Time from symptoms to definitive diagnosis of idiopathic pulmonary arterial hypertension: The DELAY study. Chest, 2011. https://pubmed.ncbi.nlm.nih.gov/23662179
PROKERALA registry. Clinical characteristics and practice patterns of pulmonary hypertension in Indian adults. International Journal of Cardiology, 2018. https://pmc.ncbi.nlm.nih.gov/articles/PMC8891004
Khanna D, et al. Recommendations for Screening and Detection of Connective Tissue Disease-Associated Pulmonary Arterial Hypertension. Arthritis & Rheumatism. https://pmc.ncbi.nlm.nih.gov/articles/PMC3883571
