Hi Bmspossum, I am sorry about your husband's problems. I havent heard of a catheter causing this problem. I would look into some of the meds he is taking as more often than not medications are the reason.
Certainly keep an eye on that blood pressure and let his doc's know if it continues to be that high. That is a huge stroke risk when BP's get up into that range.
Please do continue to post and let us know how he is doing