Vertigo is just the medical term for a spinning sensation. Either the patient feels like they are moving when stationary, or the patient feels everything around them is moving. So just saying vertigo is the diagnosis.
If this has been diagnosed as Vertigo, then any Doctor knows this has to be investigated properly because there can be serious underlying conditions. It could be caused by anything from an inner ear infection, circulation problems, a stroke, a TIA (mini stroke), side effects from medication. I would start by looking up all his medication on the internet, and see if anything states vertigo as a possible side effect. Especially for any meds prescribed post surgery. Some pain relief medication is a good suspect. If you find anything, report it to his Doctor.
If you have a blood pressure monitor at home, I would take his pressure while laying down relaxed. Then get him to stand up and then sit immediately in a chair. Take it again. See if it drops too low. I'm sure the Doctor at the appointment tested this?
I have a feeling it's likely to be down to meds so fingers crossed.
Please let us know if you find anything suspicious.
Verdigo is by itself a serious problem, I would think it should be examined for the cause.
The first thing I thought was that he is taking a new or stronger medication, or has a problem with the electrical impulses that cause and regulate the heart beat. Beta blocker medications like Coreg take some time for the body to adjust to. Also, it isn't at all rare for someone to need a pacemaker, especially if a heart attack preceded bypass surgery.
I'd make sure his condition gets a thorough follow-up.
That being said, we welcome him to the zipper club. I've always wondered why medhelp hasn't included a board for heart surgery patients.