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Preventable sudden death: the "long Q-T syndrome"
Summary
Long QT syndrome (LQTS) is a critical consideration for adolescent syncope. Early identification using Bazett
Area of Science:
- Cardiology
- Clinical Electrophysiology
- Genetics
Background:
- Syncope in adolescents necessitates considering rare but serious conditions.
- Long QT syndrome (LQTS) is a primary cardiac channelopathy associated with ventricular arrhythmias.
Observation:
- A case of cardiac arrest in an adolescent with LQTS is presented.
- Bazett's formula is a key method for identifying patients with prolonged QTc intervals.
Findings:
- LQTS should be included in the differential diagnosis for adolescent syncope.
- Prolonged QTc interval and syncope in LQTS patients correlate with high mortality from ventricular arrhythmias.
Implications:
- Prompt diagnosis and management of LQTS are crucial for preventing sudden cardiac death.
- Beta-blocker therapy, such as propranolol, is indicated for patients with LQTS, syncope, and prolonged QTc intervals.
- This case highlights the importance of recognizing LQTS in adolescents presenting with syncope.