Can patients on ventilators that are heavily sedated hear you when you speak to them?

Sometimes....: There are patients in this situation that say when they recover and awaken that they heard things that their loved ones were saying. So, it is definitely worthwhile to talk to these patients! This can also stimulate the brain which is also good for these patients. Even though they may not seem to respond, it is possible they can hear you but the medications make responding not possible. Good luck!