What caused a patient in their 60s to develop intermittent heart palpitations and periodic weakness? At presentation to the emergency department, the patient said they had not had any significant ...

A man in his mid-70s with a history of peripheral arterial disease, but no known heart disease, presents to the emergency department (ED) with 1 to 2 hours of nonradiating, slightly pleuritic, ...

The diagnosis is normal sinus rhythm, atrial bigeminy, first-degree atrioventricular (AV) block (prolonged AV conduction), and right bundle branch block (RBBB). The rhythm is slightly irregular, with ...

The correct diagnosis is sinus rhythm, right bundle branch block (RBBB), left anterior fascicular block, and acute STEMI (Figure 2). The rhythm is regular with a rate of 90 beats/min, although there ...