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Summary
Sick sinus syndrome in children can be life-threatening, causing neurological symptoms and sudden death. Early diagnosis and pacemaker insertion are crucial for managing this pediatric cardiac arrhythmia.
Area of Science:
- Pediatric Cardiology
- Electrophysiology
- Cardiac Arrhythmias
Background:
- Sick sinus syndrome (SSS) is a rare cardiac arrhythmia affecting the heart's natural pacemaker.
- While often associated with older adults, SSS can occur in children, presenting unique diagnostic and management challenges.
Observation:
- This study describes five pediatric cases of SSS with otherwise normal hearts.
- Symptoms ranged from bradycardia noted prenatally to neurological manifestations like syncope and dizziness.
- One case involved sudden death, and another experienced near-fatal ventricular tachycardia.
Findings:
- Continuous 24-hour electrocardiographic monitoring revealed significant sinus bradycardia, sinoatrial block, and sinus arrest.
- Two patients exhibited associated atrioventricular block, suggesting potential binodal disease.
- Atrial fibrillation or flutter was present in three children.
Implications:
- Isolated SSS in children can be a life-threatening condition.
- Early recognition and continuous monitoring are vital for assessing SSS severity.
- Permanent pacemaker insertion is indicated in selected pediatric cases to prevent severe outcomes.