On occasion, my pulse rate climbs rapidly, only to return to normal a minute or two later. I don't experience any chest pain or other discomfort. What could cause this?
D001281:Atrial Fibrillation / Q000503:physiopathology*; D006339:Heart Rate / Q000502:physiology*; D006801:Humans; D013617:Tachycardia, Supraventricular / Q000503:physiopathology*; D013997:Time Factors