Mr. Fonzarelli (not his real name), a 60s-ish patient of mine was recently hospitalized after a routine colonscopy.

Apparently he’d flipped his heart rhythm into something called atrial fibrillation, where the top two chambers of the heart beat asynchronously and chaotically at a rapid pace (in his case, >400 beats per minute).

Here’s what he wrote me about his overnight stay in the hospital [bolding mine]:

Continue reading