Yes, a  normal resting ECG misses arrhythmias that are intermittent, exercise-triggered or only present during specific physiological states because it captures seconds of electrical activity from a heart that may only misbehave for minutes a day. A normal ECG tells you the rhythm was normal when the stickers were on. It says nothing about what happens the rest of the time.

“Parents bring in a normal ECG and think that’s the end of the investigation and I understand why but a child who faints during sport and has a normal resting ECG has not been cleared. They’ve had one test that was normal at rest. Those are completely different statements,” says Dr. Prashant Bobhate, Pediatric Cardiologist in Mumbai, India.

More than most families realise. The ECG is twelve seconds long and arrhythmias don’t follow appointment schedules.

• Intermittent SVT: Supraventricular tachycardia episodes in children start and stop abruptly and can be completely absent at the time of an ECG meaning a child who had three episodes last week can have a perfectly normal tracing today and nobody would know from the paper alone.
• Long QT syndrome: Some long QT variants are borderline on a resting ECG especially in children whose QTc sits in the grey zone and the syndrome only declares itself as dangerous under adrenergic stress during exercise, sudden noise or emotional arousal that a resting trace never produces.
• Exercise-induced arrhythmia: Ventricular ectopics, sustained ventricular tachycardia and certain outflow tract arrhythmias only appear when heart rate rises with physical exertion and a resting ECG performed on a calm child lying still captures none of the electrical instability that exercise would immediately reveal.
• WPW with intermittent pre-excitation: In some children with Wolff-Parkinson-White syndrome the delta wave that indicates an accessory pathway is intermittent and can be absent on a resting ECG taken at a moment when normal conduction is dominant making the pathway invisible to a single snapshot investigation.

Every child with unexplained syncope, palpitations or exertional symptoms deserves more than a resting ECG and pediatric arrhythmia evaluation uses the right combination of investigations to catch what a single trace misses.

Once Tetralogy of Fallot is confirmed, the next steps focus on assessing severity, associated conditions, and planning the most appropriate treatment approach

• Severity determines urgency: A newborn with severe outflow obstruction and low saturations needs prostaglandin to keep the ductus open and urgent surgical planning while a baby with moderate obstruction and adequate saturations can be monitored and planned for elective repair in the first few months of life.
• Cardiac MRI in complex cases: When the pulmonary artery anatomy is complex or the echo leaves questions about branch pulmonary artery size or confluence a cardiac MRI or CT angiogram provides three-dimensional anatomy that guides the surgical approach in ways a two-dimensional echo can’t always match.
• Genetic testing: TOF is associated with 22q11 deletion syndrome and other chromosomal abnormalities often enough that genetic testing is recommended for every confirmed TOF newborn because the genetic result affects surgical risk, long term development planning and family counselling in ways that are missed entirely without testing.
• Surgical planning discussion: The timing, type of repair whether complete correction or a staged approach and the centre where surgery will be performed are all discussed with the family after the full diagnostic workup is complete and not before because the anatomy determines the plan not the diagnosis alone.

Parents wanting to understand what the earliest warning signs of critical cardiac disease look like in the newborn period before any formal diagnosis is made should read this piece on how to spot the early signs of heart disease in neonates because the earlier TOF is identified the more surgical options remain on the table and the less compromised the baby is when the operation happens.

A child with unexplained syncope and a normal ECG needs a cardiologist who looks at the clinical history and immediately asks what the heart is doing when it isn’t in a clinic room and who knows which of the available investigations is most likely to capture the problem given how the symptoms present. Not a repeat resting ECG. The right next test. Dr. Prashant Bobhate has spent over 12 years managing paediatric arrhythmia across the full spectrum from benign ectopics through Long QT, WPW and complex ventricular arrhythmias requiring electrophysiology study at the Children’s Heart Centre, Kokilaben Dhirubhai Ambani Hospital. Escorts Heart Institute New Delhi.

• Arrhythmia, MedlinePlus, U.S. National Library of Medicine — https://medlineplus.gov/arrhythmia.html
• Arrhythmia, National Heart Lung and Blood Institute — https://www.nhlbi.nih.gov/health/arrhythmias

Tetralogy of Fallot in a newborn is confirmed primarily through echocardiography which maps all four components of the defect including the VSD, right ventricular outflow tract obstruction, overriding aorta and right ventricular hypertrophy in detail. Supporting investigations include ECG, chest X-ray and pulse oximetry and together these give the cardiac team everything needed to plan surgical timing before the baby deteriorates.

“TOF in a newborn doesn’t always present dramatically. Some babies are pink enough to pass a routine examination and the diagnosis only comes when someone does an echo because the saturations were borderline or the murmur was unusual. That’s exactly why pulse oximetry screening in every newborn matters so much,” says Dr. Prashant Bobhate, Pediatric Cardiologist in Mumbai, India.

Each investigation adds a different layer and together they build the full picture the surgical team needs before any planning conversation happens.

• Echocardiography: The definitive test that maps the VSD size and location, measures the degree of right ventricular outflow tract obstruction, assesses pulmonary valve and artery anatomy and confirms the aortic override in enough detail to plan the surgical approach entirely from echo alone in most cases.
• Chest X-ray: The classic boot-shaped cardiac silhouette from right ventricular enlargement and a concave pulmonary artery segment is often visible and reduced pulmonary vascular markings indicate reduced pulmonary blood flow that tells the team how obstructed the outflow actually is before the echo even begins.
• ECG: Shows right ventricular hypertrophy with right axis deviation in most TOF cases and while it doesn’t confirm the anatomy it adds supporting electrical evidence and helps the team assess rhythm and conduction before planning anaesthesia and surgery.
• Pulse oximetry: A pre and post-ductal saturation screen flags the oxygen desaturation pattern that TOF produces and in newborns where cyanosis isn’t yet visually obvious pulse oximetry is often the first investigation that pushes the neonatal team toward urgent cardiology referral rather than watchful observation.

Every newborn with a suspected or confirmed TOF diagnosis needs a detailed structural assessment and tetralogy of fallot evaluation maps the anatomy, the haemodynamic severity and the surgical timeline before any management decision is made.

Once Tetralogy of Fallot is confirmed, the next steps focus on assessing severity, associated conditions, and planning the most appropriate treatment approach

• Severity determines urgency: A newborn with severe outflow obstruction and low saturations needs prostaglandin to keep the ductus open and urgent surgical planning while a baby with moderate obstruction and adequate saturations can be monitored and planned for elective repair in the first few months of life.
• Cardiac MRI in complex cases: When the pulmonary artery anatomy is complex or the echo leaves questions about branch pulmonary artery size or confluence a cardiac MRI or CT angiogram provides three-dimensional anatomy that guides the surgical approach in ways a two-dimensional echo can’t always match.
• Genetic testing: TOF is associated with 22q11 deletion syndrome and other chromosomal abnormalities often enough that genetic testing is recommended for every confirmed TOF newborn because the genetic result affects surgical risk, long term development planning and family counselling in ways that are missed entirely without testing.
• Surgical planning discussion: The timing, type of repair whether complete correction or a staged approach and the centre where surgery will be performed are all discussed with the family after the full diagnostic workup is complete and not before because the anatomy determines the plan not the diagnosis alone.

Parents wanting to understand what the earliest warning signs of critical cardiac disease look like in the newborn period before any formal diagnosis is made should read this piece on how to spot the early signs of heart disease in neonates because the earlier TOF is identified the more surgical options remain on the table and the less compromised the baby is when the operation happens.

A pre-travel cardiac assessment for a child with CHD isn’t a rubber stamp. It’s a look at the current echo, the current saturations, the specific destination, the flight duration and the medical facilities available at the other end and then an honest answer about whether this trip is safe as planned or needs modification. Dr. Prashant Bobhate has spent over 12 years advising families with paediatric cardiac conditions on travel safety, pre-travel oxygen assessment and emergency planning across the full spectrum of congenital and pulmonary vascular disease at the Children’s Heart Centre, Kokilaben Dhirubhai Ambani Hospital.

• Tetralogy of Fallot, MedlinePlus, U.S. National Library of Medicine — https://medlineplus.gov/ency/article/001567.htm
• Congenital Heart Defects, National Heart Lung and Blood Institute — https://www.nhlbi.nih.gov/health/congenital-heart-defects

In premature babies a patent ductus arteriosus causes a left-to-right shunt that floods the lungs with excess blood flow and strains a heart not yet ready to manage it. Common symptoms include fast breathing, difficulty weaning off ventilator support, poor feeding, bounding pulses and a heart murmur picked up on routine neonatal examination.

“PDA in a term baby is often a watch and wait situation. PDA in a 28-weeker who can’t come off respiratory support is a completely different clinical problem and the urgency of the decision is something families and neonatal teams sometimes underestimate until they’re already in trouble,” says Dr. Prashant Bobhate, Pediatric Cardiologist in Mumbai, India.

They overlap with everything else a premature baby is dealing with and that overlap is exactly what makes PDA the diagnosis that gets attributed to prematurity alone until someone looks specifically for it.

• Respiratory difficulty: A premature baby with a significant PDA struggles to wean off oxygen or ventilator support because pulmonary overcirculation keeps the lungs fluid-loaded and the respiratory team keeps waiting for improvement that isn’t coming from ventilator adjustments alone.
• Bounding pulses: The widened pulse pressure from a large left-to-right PDA shunt produces strong bounding peripheral pulses that feel distinctly different on clinical examination from the normal pulses of a baby without a significant shunt running.
• Heart murmur: A continuous machinery-type murmur audible at the left upper sternal border is the classic PDA finding though in very premature babies the murmur can be soft, intermittent or absent entirely even when the shunt is haemodynamically significant.
• Poor weight gain: A premature baby working harder than expected to breathe because of pulmonary overcirculation burns calories the body can’t keep replacing and persistent poor weight gain despite apparently adequate nutrition is one of the signs that prompts a cardiac look in the NICU.

Every premature baby with suspected PDA needs a formal echocardiographic assessment and patent ductus arteriosus evaluation maps the shunt size, the pulmonary blood flow and the haemodynamic impact before any treatment decision gets made.

It depends entirely on size, gestational age, and haemodynamic significance

• Watchful waiting: Small PDAs in more mature premature babies with minimal symptoms are often managed conservatively because spontaneous closure remains possible and unnecessary treatment in a borderline case carries its own risks that conservative management avoids.
• Medications: Indomethacin and ibuprofen promote ductal closure through prostaglandin inhibition and are used in premature babies with haemodynamically significant PDAs before considering any procedural intervention when the clinical picture and gestational age make pharmacological closure appropriate.
• Catheter closure: Transcatheter device closure is now feasible in very small premature infants at experienced centres and avoids the risks of open surgical ligation in a baby already compromised by prematurity, respiratory disease and the other complications of very early birth.
• Surgical ligation: Still used when catheter closure isn’t feasible due to anatomy or weight and when the haemodynamic burden of the PDA is causing enough pulmonary and cardiac compromise that waiting for spontaneous closure or medication response is no longer clinically appropriate.

Parents wanting to understand what cardiac warning signs in neonates look like beyond what the NICU team has already identified should read this piece on how to spot the early signs of heart disease in neonates because the overlap between prematurity symptoms and cardiac symptoms is exactly what delays PDA diagnosis in babies who needed earlier intervention.

A premature baby with a significant PDA needs a neonatologist and paediatric cardiologist working together not separately and the cardiologist needs to have read enough neonatal echos to know what a haemodynamically significant PDA looks like in a 900-gram baby on high-frequency ventilation rather than in a textbook diagram. Dr. Prashant Bobhate has spent over 12 years performing neonatal echocardiography and managing PDA in premature infants across every gestational age and every level of haemodynamic compromise at the Children’s Heart Centre, Kokilaben Dhirubhai Ambani Hospital.

• Patent Ductus Arteriosus, MedlinePlus, U.S. National Library of Medicine — https://medlineplus.gov/ency/article/001560.htm
• Congenital Heart Defects, National Heart Lung and Blood Institute — https://www.nhlbi.nih.gov/health/congenital-heart-defects

Cardiac catheterization in children is a minimally invasive and generally safe procedure performed under sedation or general anaesthesia, in which a thin tube called a catheter is guided through blood vessels into the heart for diagnosis or treatment. It usually allows faster recovery than surgery, with most children discharged within 24 hours, while the main risks involve minor bleeding or infection at the insertion site.

“Most parents hear the word catheterization and imagine something close to open heart surgery and the relief when I explain what it actually involves is something I see at almost every pre-procedure appointment. It’s a very different conversation to the one they were bracing for” says Dr. Prashant Bobhate, Pediatric Cardiologist in Mumbai, India.

Structured, precise and very different from the open surgical procedures most families confuse it with when they first hear the recommendation.

• Access site preparation: A needle punctures the femoral vein or artery in the groin under sterile conditions and a sheath is placed through which catheters of different sizes can be exchanged throughout the procedure without repeated punctures at the access site.
• Catheter navigation: The catheter is advanced through the vascular system into the right or left heart chambers under continuous fluoroscopic X-ray guidance and the operator steers it to specific locations inside the heart to take the measurements or perform the intervention the procedure was planned for.
• Pressure and oxygen measurements: In a diagnostic catheterization pressures in each cardiac chamber and the great vessels are recorded alongside oxygen saturations to calculate pulmonary vascular resistance, identify shunts and determine whether intervention is indicated and at what timing.
• Therapeutic interventions: In an interventional catheterization the same access allows balloon dilatation of a narrowed valve, deployment of a device to close an ASD or VSD, coil embolisation of an abnormal vessel or stenting of a narrowed pulmonary artery all without touching the chest wall.

Understanding the full range of what catheter-based procedures can achieve in children and when they are the right approach over surgery is exactly what a thorough interventional pediatric cardiology assessment maps out before any procedure date is set.

Lower risk than surgery, but not zero risk, which is why it is important to understand it clearly before the procedure day

• Access site complications: Bruising, minor bleeding and in rare cases a haematoma or arterial spasm at the femoral puncture site are the most common post-procedure issues and are managed conservatively with pressure and rest in almost every case without additional intervention.
• Arrhythmia during the procedure: The catheter moving through heart chambers can trigger transient rhythm disturbances that the monitoring team manages immediately and which almost always resolve spontaneously once the catheter is repositioned away from the area that triggered them.
• Radiation exposure: Fluoroscopic guidance uses X-ray and paediatric catheterization laboratories use dose minimisation protocols specifically designed for children but families should know that radiation exposure is part of the procedure and the clinical benefit is always weighed against it before recommending catheterization.
• Recovery timeline: Most children spend four to six hours in a monitored recovery area after an uncomplicated catheterization, go home the same day or the following morning and return to normal activity within three to five days with the access site avoiding significant physical strain for one week.

Parents wanting to understand what cardiac warning signs look like in children in the days after any cardiac procedure should read this piece on top 5 warning signs of pediatric heart failure because knowing what to watch for at home is as important as understanding what happened in the catheterization laboratory.

A paediatric cardiac catheterization in the right hands is a precise, low-risk procedure that achieves things in an hour that would otherwise require open heart surgery and weeks of recovery. In less experienced hands the same procedure carries higher complication rates, longer procedure times and outcomes that don’t justify the risk. The operator matters as much as the indication. Dr. Prashant Bobhate has spent over 12 years performing diagnostic and interventional cardiac catheterizations across the full range of congenital defects including ASD and VSD device closure, balloon valvuloplasty, pulmonary artery stenting and India’s first transcatheter Potts shunt at the Children’s Heart Centre, Kokilaben Dhirubhai Ambani Hospital. Escorts Heart Institute New Delhi.

• Cardiac Catheterization, MedlinePlus, U.S. National Library of Medicine — https://medlineplus.gov/ency/article/003419.htm
• Congenital Heart Defects, National Heart Lung and Blood Institute — https://www.nhlbi.nih.gov/health/congenital-heart-defects

Long term effects of congenital heart disease into adulthood involve chronic manageable conditions rather than a total cure and require lifelong specialised care. Common complications include arrhythmias, heart failure, pulmonary hypertension and infective endocarditis. Even repaired defects can lead to residual problems or entirely new cardiovascular issues that develop silently over decades without any warning symptoms at all.

“The word repaired is one of the most dangerous words in paediatric cardiology because families hear it as finished and it almost never is. The heart keeps ageing, the repair doesn’t stay static and the cardiologist who closed the file at eighteen left something unfinished whether they meant to or not,” says Dr. Prashant Bobhate, Pediatric Cardiologist in Mumbai, India.

Each defect type has a known trajectory and knowing it is what separates catching a problem early from discovering it after damage has already accumulated.

• Late arrhythmia: Scar tissue from childhood repairs and decades of abnormal haemodynamics breed atrial flutter, atrial fibrillation and ventricular arrhythmias in adults who had no rhythm problems as children and no reason to expect them.
• Valve deterioration: A valve repaired at seven or replaced with a biological prosthesis at ten has a finite lifespan and adults without echo surveillance for years are frequently shocked by how much has changed in a structure they assumed was permanently sorted.
• Ventricular dysfunction: Right and left ventricular function declines progressively as chambers absorb years of residual volume or pressure load and by the time symptoms appear the function lost is often not fully recoverable even with optimal intervention.
• Pulmonary hypertension: Adults with repaired shunt lesions, single ventricle physiology or longstanding cyanotic disease can develop significant pulmonary hypertension decades after childhood repair and this is one of the most under-recognised long term complications in adult CHD because nobody was watching for it.

Every adult living with a repaired or partially corrected congenital heart disease deserves a specialist review that looks at what the anatomy is actually doing today not what it was doing at the last paediatric appointment a decade ago.

More than the heart alone. The whole picture shifts over years.

• Endocarditis risk: Adults with residual structural abnormalities, prosthetic valves or complex repaired anatomy carry an ongoing endocarditis risk requiring antibiotic prophylaxis for specific dental and surgical procedures for life not just during childhood.
• Mental health burden: Depression, anxiety and grief about lost health expectations accumulate quietly across decades of clinic visits, activity restrictions and the constant awareness that the heart underneath isn’t normal and these deserve a direct question at every appointment.
• Pregnancy risk: Women with CHD face elevated cardiac risk during pregnancy that varies enormously by defect and repair history and a cardiologist who hasn’t specifically assessed that woman’s current anatomy before conception has not done the job the pregnancy required.
• Re-intervention: Valves degrade, conduits narrow and haemodynamic changes compensated at twenty-five can demand surgical or catheter re-intervention at forty and adults who assumed childhood surgery was the last one are sometimes surprised to find it wasn’t.

Parents wanting to understand how the decisions made in childhood cardiac care shape what adults with CHD face decades later should read this piece on the importance of fetal diagnosis of critical congenital heart disease because where the story starts has more bearing on how it unfolds than most families are ever told.

Adults with congenital heart disease need a cardiologist who understands what a Fontan circulation looks like on echo at thirty-five, knows what a dilating right ventricle in a repaired TOF patient is telling you and can map out a surveillance plan built around that specific anatomy rather than a generic annual check that misses everything worth catching. Dr. Prashant Bobhate has spent over 12 years working across the full spectrum of CHD from fetal diagnosis through neonatal presentations through long term adult follow up in patients who first came to him as children at the Children’s Heart Centre, Kokilaben Dhirubhai Ambani Hospital.

• Congenital Heart Defects, MedlinePlus, U.S. National Library of Medicine — https://medlineplus.gov/congenitalheartdefects.html
• Congenital Heart Defects, National Heart Lung and Blood Institute — https://www.nhlbi.nih.gov/health/congenital-heart-defects