I'm sorry that you have this to worry about after all that you've both been through already.

I daresay that you already know that the inner ear is concerned with our equilibrium or balance, so anything that alters that, as in surgery for example, is bound to cause dizziness.

Have you asked your hubby's surgeon about his symptoms? Maybe as Jo*Mar says, it's something totally unconnected to his operation.

It's probably best to get it checked. At least by doing that you could put your fears to rest.

I hope you get some answers soon.