The cardiologist said Yum's heart looked pretty normal, with the wall thickness at the upper end of normal. He said the heart drops in older cats and these physiologic changes can cause murmurs. She had her BP measured for the first time. It was high. He said "180". He prescribed the ACE inhibitor enlapril, 2.5 mg once a day. He gave me tablets, which I will try crushing into her food. I think I can get a liquid version. I see @Marje and Gracie ,@Barbara & Uncle , and maybe @Wendy&Neko might have experience with the drug. Oddly google says in some places it is used for CRF and in other places it can cause kidney failure. The cardiologist didn't think her kidney disease was very bad at this point.