I looked away from the nurse as she wrapped the tourniquet around my arm and prepared the needle. Then I realized that I was the only patient getting blood drawn. Everyone else was receiving ...

You’ve likely felt your heart beating in your chest after strenuous activity — or have taken your pulse by placing your fingers on your wrist or neck. A less common — and sometimes startling — ...

Q I am 66 years old and an avid cyclist. Last winter, after we went for a long ride, I suddenly felt lightheaded and then fainted. My doctor ordered a series of heart scans that found slight mitral ...