Hello to everyone that replied to my earlier post. this is an update on what took place. My dad found out there was no blockage but that there may be some oxygen problems with the amount flowing through the smaller veins and such, so he came home yesterday and is okay aside from feeling shortness of breath, but the doctors feel an adjustment to his medication will help opening those veins up and help him with his oxygen flow. so that is the update, no surgery and it would seem our family is in the clear. Thanks to everyone who wished my family well wishes. meant a whole lot. and I know we all really appreciate it. take care all.