Adults With Congenital Heart Defects

Yes. But normally looks different for each person and pretending otherwise doesn’t help anyone. Some adults with congenital heart defects sail through decades without a single cardiac event. Others need ongoing medication, regular echo follow up or eventually a repeat intervention they weren’t expecting when they left their paediatric cardiologist at eighteen. The defect doesn’t disappear just because childhood did.

“I see adults who were told they were completely fixed as children and genuinely believed it. Some were right. Some weren’t and the gap between discharge at eighteen and showing up again at forty with symptoms is where the real damage quietly accumulated,” says Dr. Prashant Bobhate, Pediatric Cardiologist in Mumbai, India.

The transition from paediatric to adult cardiac care is where things fall apart most often. A teenager discharged from a children’s hospital with a clean echo gets told to follow up with a general cardiologist.

• Arrhythmia developing late: Repaired congenital hearts carry scar tissue and stretched chambers from years of abnormal haemodynamics. That substrate breeds arrhythmias, sometimes decades after a technically successful repair and adults who had no rhythm problems as children can develop significant ones in their thirties or forties without warning.
• Valve problems returning: A valve repaired or replaced in childhood doesn’t last forever. Biological valves degrade. Repaired native valves can slowly become incompetent again as the heart remodels over years and adults who haven’t had echo surveillance for a decade are often surprised by what’s accumulated quietly in the meantime.
• Right ventricular strain: Adults with repaired pulmonary stenosis, TOF or other right-sided defects frequently develop progressive right ventricular dilation over time. The RV compensates silently for years and then it doesn’t and by the time symptoms appear the window for straightforward re-intervention is sometimes already closing.
• Pregnancy risks in women: Women with congenital heart defects face genuinely elevated cardiac risk during pregnancy depending on their specific anatomy and repair history. Some defects carry low risk with appropriate monitoring. Others need specialist co-management from conception to delivery and that assessment must happen well before a positive test, not after.

Every adult living with a repaired or unrepaired congenital heart disease deserves a specialist review that looks at exactly what their anatomy is doing right now, not what it was doing at the last paediatric appointment ten years ago.

Not just an annual ECG and a blood pressure check. That’s what a lot of adults with congenital heart defects get from a general practice setting and it’s genuinely not enough for most of them. The surveillance these patients need is specific to their anatomy, their repair history and which complications their particular defect is statistically likely to develop over time.

• Regular echocardiography: The frequency depends on the defect and the repair but most adults with significant congenital heart disease need echo every one to three years minimum. Not because something is necessarily expected but because catching a deteriorating valve or a dilating ventricle early changes the intervention options dramatically compared to catching it late.
• Exercise testing periodically: How the heart performs under real physical load tells you things a resting echo simply can’t. Adults who feel fine at rest but desaturate or develop arrhythmia on a treadmill are giving you information that changes the management plan in ways their symptom history never would.
• MRI for complex anatomy: Cardiac MRI gives volumes, function and anatomy in three dimensions in a way that echocardiography sometimes can’t for complex congenital hearts. Adults with Fontan circulations, repaired TOF or single ventricle physiology often need periodic MRI as part of their standard surveillance regardless of how they feel clinically.
• Mental health as part of the plan: Adults who grew up with a cardiac diagnosis carry an invisible weight that doesn’t get enough clinical attention. Anxiety about symptoms, avoidance of exercise because of fear, grief for the version of their life they imagined before the diagnosis and depression are all genuinely common in this population and they deserve to be asked about directly.

Understanding how early detection of congenital defects shapes the long term trajectory for these patients is explored in 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 people realise.

Adults with congenital heart defects need a cardiologist who actually understands congenital anatomy, not one who manages coronary disease all day and sees a repaired TOF once a year. You want someone who knows what a Fontan looks like on echo, understands what a dilating right ventricle in a forty year old with repaired pulmonary stenosis is telling you and can map out a surveillance and management plan that’s specific to that person’s anatomy rather than a generic follow up schedule. Dr. Prashant Bobhate has spent over 12 years working across the full spectrum of congenital heart disease from fetal diagnosis through neonatal critical presentations through long term adult follow up in patients who first came to him as children.

• 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