question: age 54, 165 lbs, 5ft.3in. infrequent heart palpatations in the past. other than that no problems. have been experiencing heart beats off and on accompanied by pressure as if heart is being blown up like a balloon. same sensation you get on your arm when blood pressure is being taken. I can feel the pressure in my ears and hear my heart beat in them when this happens. then it decreases and a couple of minutes happens again. what is it?