title: Ask the doctor. I'm a fit 61-year-old who had bypass surgery 15 years ago. Recently, I've been having rapid heart-beats (what my doctor calls supraventricular tachycardia) during or just after vigorous exercise. Should I tone down my exercise?
authors.forename: Thomas
authors.initials: T
authors.lastname: Lee
mesh_terms: D015444:Exercise; D006801:Humans; D010820:Physicians; D013617:Tachycardia, Supraventricular