// PARAMEDIC Question · Cardiology
A patient is in atrial flutter with a 2:1 block and a ventricular rate of 150. The atrial rate is approximately:
A. 75
B. 150
C. 300Correct
D. 450
// Rationale
Atrial flutter typically has an atrial rate of ~250–350/min; with 2:1 conduction, ventricular rate is ~150/min.