Ever had that moment where it feels like your heart skips a beat? This might occur after a stressful day, a burst of exciting news, meeting someone new or even drinking your morning coffee. And ...

Most of us have had that unsettling sensation when our heart seems to flutter or "skip" a beat — but when heart palpitations start happening more frequently, you may wonder if it’s something to get ...

If you've ever felt your heart suddenly start thumping faster than it should, you're not alone. Research in the New England ...

Dr. Hugh Calkins answers the question: 'Atrial Fibrillation vs. Atrial Flutter?' — -- Question: My doctor told me I sometimes have atrial fibrillation and at other times have atrial flutter. What ...

While the Chargers were warming up in Denver last Sunday, Jim Harbaugh felt his heart racing. He knew that feeling, having experienced it as a player in 1999 and as an NFL head coach 13 years later. A ...

Narrow QRS complexes occur regularly. This tracing suggests either atrial flutter or ventricular tachycardia. It is not atrial flutter, however. If it were, the QRS complexes occurring regularly would ...

Jim Harbaugh endured a concerning moment on the sidelines early during the Los Angeles Chargers' 23-16 Week 6 win over the Denver Broncos. Harbaugh began the Week 6 game coaching the Chargers on the ...