Dolfins...

These pains your father has. Are they always localized in the exact area of the heart itself, or do they seem to move from place to place?

Are they very sharp pains that come on suddenly, or dull ones that build up gradually?

Does the act of swallowing, especially taking very small sips of water, seem to alter or alleviate the pain?

I ask this because there is a condition where it is possible to get a type of hernia in the chest cavity where tiny air bubbles can actually get inside the chest wall and cause sharp, almost excruciating pain. It usually comes on suddenly and can last anywhere from a few minutes to an hour. Drinking a glass of water in VERY small sips usually helps. The act of working the esophagal muscles works the air bubble around until it finally finds a way out. I know it sounds strange, but it's a condition I've lived with off and on for nearly my whole life, and it can seem scary sometimes.

Whatever it is that's ailing your father, I hope he finds some answers soon and rids himself of his pain.

Best of wishes...
Idealist