For all heart surgeries general anesthesia is used which means they put you to sleep. With newer techniques and newer medicines , general anesthesia has become very safe for heart surgery.

General anesthesia

General endotracheal anesthesia. You are completely asleep with a breathing tube in your airway. You wake up hours after surgery.

Honestly, I have no recent experience in current cardiac surgery practice, but I know even less about current anesthesia practice. It will be general anesthesia and you will be put to sleep. How and with what technique I cannot say.
Good luck.

We use General Endotracheal Anesthesia. Patient is asleep and breathing is controlled by a ventilator. It is done through a tube in the wind pipe. There is no pain during surgery.

I am not an anesthesiologist, but there are certain principles that are followed in general anesthesia.These are hypnosis, analgesia, amnesia, and muscle relaxation. There are several different drugs used in combination to accomplish this. The important thing is to make sure patient’s vital signs are maintained. To do this, there are many gadgets the anesthesiologists
use to accomplish this very important part of surgical procedures.