@michael56cc820, that is a very good question to ask your doctor, preferrably your cardiologist. The 2023 vaccine targets a different strain of the COVID virus than was in the original vaccine or in the bivalent vaccines that came out last year. It's still a COVID vaccine, but it's now targeting the XBB.1.5 strain currently circulating. So it isn't a booster in that sense.

While the 2023 vaccine is recommended for your age group, I would talk with your cardiologist first. They are familiar with your recent episode following the 2022 bivalent shot and your complete heart and medical history.