The correct diagnosis is sinus rhythm with high-degree atrioventricular (AV) block (ie, Mobitz II) (Figure 2). Figure 2. Courtesy of Philip J. Podrid, MD. The rhythm is regular, at a rate of 30 ...

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 ...