Update

Thank you everyone for your words and thoughts and prayers for my dad.  He's out of the hospital, still needs more tests to be done, but the cardiologist said he didn't have to stay.  She's changing his medication however so we'll see what happens with whatever he's put on.  The Dr.  said his one ventricle (I cant remember the side) is bigger then the other and that he has high blood pressure in his lungs.  But I don't know what any of that means and I guess she didn't really explain it cause he didn't either.  She told him that he's not in danger of a stroke or heart attack now that so I'm very relieved.  He has to go back to his Dr. now and see a blood pressure specialist, so hopefully they can get it under control
I'll keep you all posted on how he's doing as I find out more, but he is home now :)