A 30-year-old woman presents to the Emergency Department after a witnessed syncopal episode. Her ECG shows a regular ventricular rate of 40 bpm. P wav...

Question

A 30-year-old woman presents to the Emergency Department after a witnessed syncopal episode. Her ECG shows a regular ventricular rate of 40 bpm. P waves are clearly visible at a regular rate of 80 bpm, but they bear no consistent relationship to the QRS complexes. The QRS complexes are narrow. What is the rhythm?

Accepted Answer

Third-degree (Complete) AV block

Answer

Sinus Bradycardia

Answer

First-degree AV block

Answer

Second-degree AV block, Mobitz I (Wenckebach)

Answer

Second-degree AV block, Mobitz II

ukmla MCQ (SBA): Complete Heart Block