In the last few weeks, the Skeptical Cardiologist has had a run on with patients with premature atrial contractions (PACs). I've discussed in detail premature ventricular contractions (PVCs) here and ...

The diagnosis is normal sinus rhythm, first-degree AV block (prolonged AV conduction), premature ventricular complexes, escape junctional complex, left ventricular hypertrophy with associated ST-T ...

The rhythm is irregular, but the long intervals are the same (↔) and the short intervals (┌┐) are the same. One premature QRS complex (↑) is observed. Therefore, the rhythm is regularly irregular. The ...

Patients with recent-onset atrial fibrillation commonly undergo immediate restoration of sinus rhythm by pharmacologic or electrical cardioversion. However, whether immediate restoration of sinus ...

Tachycardia describes when the heart beats faster than normal. Sinus rhythm with tachycardia occurs when the sinus node fires electrical impulses abnormally quickly. Inappropriate sinus tachycardia ...

The double-blind Sotalol Amiodarone Atrial Fibrillation Efficacy Trial (SAFE-T) was established to compare the efficacy of sotalol and amiodarone in restoring and maintaining sinus rhythm in patients ...

“Understanding the remodeling that’s going on in the heart at the transcriptional level is pretty fascinating,” said Elizabeth Schroder Stumpf, a physiologist at the University of Kentucky, who was ...

Dear Dr. Roach: I am an active 76-year-old man. I became aware of an increase in my resting heart rate in April 2021, going from a resting rate of 48 to 74 beats per minute in a six-day period. It is ...