مراهقة عمرها ١٥ سنة أغمي عليها أثناء السباحة، وأخوها توفي فجأة في عمر صغير، وتخطيطها يظهر QTc ٥١٠. أي تعليمات مهمة للأسرة؟

A 15-year-old girl fainted while swimming, her brother died suddenly young, and her QTc is 510 ms. Which instruction to the family matters most?

1. Give energy drinks before sport to raise the heart rate
2. There is no need to screen other family members
3. Encourage competitive swimming to strengthen the heart
4. Avoid QT-prolonging drugs and check before any new medicine

Answer: D) Avoid QT-prolonging drugs and check before any new medicine. This suggests congenital long QT syndrome. Many QT-prolonging drugs are avoided, electrolytes kept normal, beta-blockers or an ICD may be used, and relatives are screened.