Why Do Palpitations Require Special Attention In Congenital Heart Disease?

 

Many people born with congenital heart disease (CHD) go on to live active and fulfilling lives. Thanks to advances in diagnosis and treatment, thousands of adults in the UK now successfully manage repaired or monitored congenital heart conditions.

However, when heart palpitations occur, they are often assessed differently than they would be in someone without CHD.

Why Does Congenital Heart Disease Affect Heart Rhythm?

The heart's structure and electrical pathways may differ from birth or may have been altered through surgical repair.

This can influence how electrical signals travel through the heart and increase the likelihood of rhythm disturbances.

Common factors include:

  • Surgical scarring

  • Chamber enlargement

  • Altered blood flow patterns

  • Previous corrective procedures

How Can Surgery Affect Heart Rhythm?

Life-saving repairs often leave small areas of scar tissue.

While these scars are a normal part of healing, they can sometimes affect the heart's electrical system by creating areas where signals travel less efficiently.

In some cases, this can contribute to palpitations or more sustained rhythm disturbances.

What Triggers Should CHD Patients Be Aware Of?

People living with congenital heart disease should pay particular attention to:

  • Dehydration

  • High caffeine intake

  • Illness and fever

  • High-intensity exercise

  • Stress and fatigue

Managing these triggers can often help maintain rhythm stability.

When Should You Seek Specialist Advice?

Contact your ACHD team if:

  • Palpitations become more frequent

  • Symptoms feel different from usual

  • You experience dizziness or near-fainting

  • Breathlessness worsens

  • Episodes become prolonged

The Bottom Line

Many palpitations in congenital heart disease are manageable and not immediately dangerous. However, because every congenital condition is unique, regular specialist follow-up remains one of the most important ways to protect long-term heart health.

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