شابة نبضها ١٩٠، ضغطها ١١٨/٧٤، وتشعر بخفقان، والنظم كما في الصورة. ما أول إجراء؟

A young woman has HR 190, BP 118/74 and palpitations; the rhythm is shown. What is the first action?

1. Unsynchronised defibrillation
2. IV amiodarone
3. IV atropine
4. A vagal manoeuvre

Answer: D) A vagal manoeuvre. Stable SVT: start with vagal manoeuvres, then rapid-push adenosine if they fail. Shocks are for unstable clients.