مريض في الطوارئ تخطيطه يظهر رفرفة أذينية بشكل أسنان المنشار، وسرعة البطين ١٥٠. أي عبارة صحيحة؟

An ED client’s ECG shows sawtooth atrial flutter with a ventricular rate of 150. Which statement is correct?

1. Flutter does not cause clots and needs no anticoagulation
2. There is likely 2:1 conduction with atrial activity around 300
3. Absent flutter waves would mean VF
4. This is sinus tachycardia from anxiety

Answer: B) There is likely 2:1 conduction with atrial activity around 300. In atrial flutter the atria beat around 300/min, and with 2:1 conduction the ventricular rate is about 150. Its stroke risk resembles AF, so anticoagulation is assessed the same way.