My guess is that the cardiologist knows that there may be an interaction between the medications you were prescribed and the medications being administered during and following heart surgery. (You will love the medications given following open heart surgery!)

Open-heart surgery means arteries are to be replaced, no doubt. That's going to help blood supply to the brain, as well. My husband said that open-heart surgery took something out of him, and he always seemed much calmer emotionally in the years following his surgery. I hope you will find life calmer for you, too.

Trust the cardiologist on this one, and try to keep calm, as others suggest. You will be given appropriate medications following the heart surgery and even referred to another psychiatrist through your cardiologist if you request it, perhaps.

Please ask your cardiologist about sleep apnea testing after surgery, too, when it's appropriate after recovery. That was helpful for me to be referred to a pneumocologist at the time. It might help another, as well.

Take care and try to think calm things.

Genetic