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How Complete Heart Block Affects Children and Teens

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 When we think of heart conditions, we often associate them with adults or the elderly. However, children and teenagers can also be affected by complex heart issues, one of which is Complete Heart Block (CHB). This condition can be congenital (present at birth) or acquired, and it significantly impacts how the heart functions.

In this blog, we’ll explore what Complete Heart Block is, its causes in younger populations, how it affects their health, symptoms to look out for, and why consulting the best heart hospital in Delhi NCR, like Sri Balaji Action Medical Institute, is vital for effective treatment.



What is Complete Heart Block?

The human heart has an electrical system that controls its rhythm. Normally, electrical signals pass from the upper chambers of the heart (atria) to the lower chambers (ventricles) through a pathway called the atrioventricular (AV) node. In Complete Heart Block, this electrical pathway is entirely blocked. As a result, the atria and ventricles beat independently of each other, causing an irregular or dangerously slow heartbeat.

In children and teens, this abnormal rhythm can lead to fatigue, fainting spells, or even heart failure if left untreated.

Types of Heart Block in Children

There are three types of heart block:

  1. First-degree block – A mild delay in the electrical signal, usually without symptoms.

  2. Second-degree block – Some signals are blocked, causing occasional missed heartbeats.

  3. Third-degree or Complete Heart Block – All signals are blocked. The heart relies on a slower, secondary pacemaker, which may not be enough for the child’s activity needs.

Complete Heart Block is the most serious form, requiring immediate attention from a heart specialist in Delhi NCR.

Causes of Complete Heart Block in Children and Teens

Complete Heart Block in young individuals can be:

1. Congenital (Present at Birth)

  • Maternal lupus or autoimmune disease can pass antibodies to the baby, damaging the baby’s heart conduction system.

  • Structural heart defects may develop during fetal growth, leading to CHB.

2. Acquired (Develops Later)

  • Cardiac surgery: Sometimes, heart surgeries in children (especially for congenital defects) can damage the conduction system.

  • Infections like myocarditis or rheumatic fever can affect the heart tissue.

  • Certain medications or conditions such as Lyme disease.

Children with congenital heart defects are more prone to CHB. Timely diagnosis and follow-up at the best heart hospital in Delhi NCR is essential.

How CHB Affects a Child's Body

Complete Heart Block can have significant physiological effects:

1. Reduced Heart Rate

The heart beats very slowly—sometimes less than 40 beats per minute—which can limit oxygen delivery to organs and muscles.

2. Fatigue and Weakness

Children may feel tired easily during play or sports. They may also show poor academic performance due to fatigue.

3. Dizziness or Fainting (Syncope)

An irregular heartbeat can reduce blood supply to the brain, causing fainting spells.

4. Breathing Problems

Due to low oxygen circulation, children may breathe faster or struggle during physical activity.

5. Heart Failure (In Severe Cases)

If left untreated, CHB can eventually lead to heart failure, especially when combined with structural heart defects.

Signs and Symptoms to Watch Out For

Parents, teachers, and caregivers should look for these signs:

  • Slow heartbeat or irregular pulse

  • Shortness of breath during activity

  • Fatigue, weakness, or poor feeding in infants

  • Dizziness or fainting

  • Poor growth or developmental delay

  • Chest pain or discomfort

  • Frequent naps or sleepiness

If any of these symptoms are noticed, consult a heart specialist in Delhi NCR promptly.

How CHB is Diagnosed

At facilities like Sri Balaji Action Medical Institute, pediatric cardiologists use the following tools for accurate diagnosis:

1. Electrocardiogram (ECG)

This is the most common tool that shows how the heart’s electrical system is working.

2. Holter Monitor

A portable ECG that records heart activity over 24–48 hours.

3. Echocardiogram

An ultrasound of the heart to detect structural abnormalities.

4. Exercise Stress Test

To observe how the heart behaves during physical activity (used in older children and teens).

Treatment Options for Complete Heart Block

The treatment plan depends on the child’s symptoms, age, and the severity of the condition.

1. Monitoring

In mild or asymptomatic cases, doctors may choose to monitor the child regularly.

2. Pacemaker Implantation

This is the most effective treatment for CHB. A pacemaker is a small device implanted under the skin that helps regulate the heartbeat. It ensures the heart maintains a normal rhythm, especially during activity or sleep.

Pacemaker implantation in children is a delicate procedure and should be handled by experienced professionals at the best heart hospital in Delhi NCR.

3. Medication

While medicines don’t cure CHB, they may be used to manage symptoms or accompanying conditions.

Living with a Pacemaker

Many children with pacemakers live healthy, active lives. However, regular check-ups are essential. Parents should ensure:

  • The device is functioning correctly (follow-up visits every few months)

  • The child avoids strong magnetic fields (e.g., certain electronic devices)

  • Sports and activities are discussed with the cardiologist

At Sri Balaji Action Medical Institute, specialized pediatric cardiology units provide long-term management and support.

Emotional and Social Impact

Chronic conditions like CHB can affect a child's confidence and social life. They may feel different or left out. Here’s how parents can help:

  • Educate your child about their condition in a positive, age-appropriate way.

  • Encourage inclusion in school and social activities.

  • Stay in touch with school staff and inform them of emergency protocols.

  • Join support groups for children with heart conditions.

Why Choose Sri Balaji Action Medical Institute?

Choosing the right hospital for pediatric cardiac care can make all the difference. Sri Balaji Action Medical Institute in Delhi NCR is a trusted name for comprehensive heart care. Here's why:

  • Experienced heart specialists in Delhi NCR who understand the complexities of pediatric heart disorders.

  • Advanced diagnostic facilities and state-of-the-art operation theaters.

  • Dedicated pediatric cardiology and cardiac surgery teams.

  • Post-operative care and long-term follow-up programs.

  • Emotional and psychological support for young patients and their families.

Final Thoughts

Complete Heart Block in children and teens is a serious condition but highly manageable with early detection and appropriate treatment. Modern pacemakers and expert care have made it possible for affected children to live normal, active lives.

If your child shows signs of an abnormal heartbeat or fatigue, don't delay. Consult a heart specialist in Delhi NCR at Sri Balaji Action Medical Institute, one of the best heart hospitals in Delhi NCR, for expert care and peace of mind.

Location: A 4 Block, A 6 Block, Paschim Vihar, New Delhi, Delhi, 110063, India

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