The diagnosis is sinus rhythm with interpolated premature ventricular complexes, in a trigeminal pattern, with retrograde concealed conduction. The rhythm is irregular, but there is a repeating ...

The basic rhythm is sinus. Many premature beats are present, which are all preceded by prematurely occurring P waves (marked by x) and are all PACs. The premature P waves shown in Figure 2 are all ...

Sinus rhythm is the term for the regular pattern of heartbeats driven by the heart’s natural pacemaker, the sinus node. Variations like sinus tachycardia (fast heart rate) and sinus bradycardia (slow ...

Serious ventricular arrhythmias due to carotid-sinus massage are extremely uncommon. Meredith and Beckwith 8 recorded 2 cases of transient ventricular tachycardia that followed its use. The first well ...