Untreated? That doesn't sound very high, but something the doctor might want to discuss medicating. Treated, they might want to tweak medication a bit to try to get down.
As for the cholesterol- been a bit of bad press recently about the cholesterol lowering drugs. Not sure if that is a real issue, or something ginned up by plaintiff's lawyers, but I'd be cautious of anything other than a modified diet until that shakes out a little more.
As for the heart - if you are getting it addressed in Turkey, you might want a second opinion at the Cleveland Clinic, as someone else suggested. If you have high confidence in your cardiologist, listen to him or her.
Re your cholesterol medication if taken. Beware of STATINS some patients experience some type of dementia, short term memory loss or at least muscle and joint pain when taking these. If prescribed, ask your cardiologist if Niacin might be an alternative.
DH had a aortic replacement valve several years ago *mechanical* and feels great. However, he did not have the same unusual circumstance as you. Good luck with your doctor and your continued relative good health.
135/80? Not very high though pharm companies are pushing 120/60. 140/90 was the old “max” high that many docs still use(ignoring the imploring voices of big pharma to treat BP;s until the BP’s fall to the level of a limp spaghetti noodle!)