The correct diagnosis is sinus rhythm with 2:1 AV block due to Mobitz type II; ventriculophasic arrhythmia (Figure 2). The rhythm is regular at a rate of 40 beats/min, although the fifth QRS complex ...

There are P waves (+) with regular PP intervals and a rate of 85 beats/min. The P waves have a normal morphology; they are positive in leads I, II, aVF, and V4-V6. This is a stable normal sinus rhythm ...