atrial fibrillation
"I've had my third pacer put in the last 18 years. Before the first one I joined the 200 bpm club. Terrible. After my first pacer I still felt very powerful heartbeats. So powerful they kept me awake at night. Doc put me on 50 mg metatropanol and I've felt like a human being ever since. Only complaint is short term memory. 70 year old male."