Patient : 69-year-old man, implanted with a Microport™ Reply DR dual-chamber pacemaker for sinus dysfunction; both leads are well positioned with normal pacing impedances, proper sensing and satisfactory pacing thresholds; the day after implantation, pacemaker control; programming of different pacing modes and recording of the tracings;
Quiz : Regarding this ECG, which is(are) the correct answer(s) ?
A. the rhythm is sinus
B. the atria are paced
C. the ventricles are paced
D. there is a left anterior fascicular block
E. there is a right bundle branch block