heart cath

exactly what is it i tho9ught as my grandmother called me to tell me my grandad was getting it done. i was informed that is was an operation where they go through a major vein and follow it to your heart to see if there is any major porblems with your heart. i felt relief when i recieved a call saying that nothing was wrong with his heart. but then i was told that they then would have to test his gallbladder to find 0out where the source of pain was coming from. we then found out that it was coming from the gallbladder and that he would have to have surgery to have the organ taken out. now i have to worry about my grandfather goin under the knife. i could take another family member getting hurt.