The correct diagnosis is sinus rhythm, second-degree AV block with 2:1 conduction, Mobitz type II (Figure 2). There is a regular rhythm at a rate of 42 beats/min, although the last QRS complex is ...

The correct diagnosis is sinus rhythm, Mobitz type II, transient complete atrioventricular (AV) block, and escape ventricular complex (Figure 2). The rhythm is irregular because of several long RR ...