10 free CCT practice questions in the real exam format, covering the official content areas, with an explanation for every answer.
CCT Practice Test 11Tutor mode
Question 1 of 10
Performing Rhythm Analysis
The lead II strip below is from a patient with a VVI pacemaker programmed at 60/min. The patient’s own sinus rhythm is 75/min. Two pacing spikes appear, each about 0.20 s after an intrinsic QRS, and neither is followed by a paced QRS. Which pacemaker problem is shown?
Rhythm strip
Lead II, 25 mm/s, 10 mm/mV, 6-second strip. Small box = 1 mm = 0.04 s; large box = 5 mm = 0.20 s.