Question

identify this rhythm

sinus bradycardia with a pvc
sinus bradycardia with sinus arrest (pause) and ventricular escape complex
sinus rhythm with pac
sinus rhythm with pvc

Explanation:

Analyze the underlying rhythm and rate

• Heart rate is slow (under 60 bpm) with normal P waves preceding each QRS complex for the first three beats, indicating sinus bradycardia.

Evaluate the pause

• A prolonged pause occurs after the third QRS complex where an expected sinus beat is missing, which is characteristic of sinus arrest (pause).

Identify the final complex

• The final complex is wide, bizarre, lacks a preceding P wave, and occurs late after the long pause, identifying it as a ventricular escape complex.

Answer:

• Sinus Bradycardia with a PVC
• Sinus Bradycardia with Sinus Arrest (pause) and Ventricular Escape Complex (Correct answer)
• Sinus Rhythm with PAC
• Sinus Rhythm with PVC