"It’s called atrial flutter," Harbaugh said after the game, via Kris Rhim of ESPN.com. "I got into an episode today. Doctors checked me out and it got back into sinus rhythm, normal rhythm." ...
AFFIRM = Atrial Fibrillation Follow-up Investigation of Rhythm Management ... from any cause in patiENts with Atrial fibrillation/atrial flutter; CAD = coronary heart disease; CV = cardiovascular ...