While on the ventilator, most patients are drowsy but conscious—similar to when your alarm clock goes off but you aren't really awake. Science has shown us that avoiding heavy sedation in the ICU will help you recuperate faster. However, some patients may experience pain or discomfort without feeling it when medications affect their nervous systems. All together now: Ahhh! When you come out of sedation you are in a state of confusion with no memory of what happened while you were asleep. Your doctor will decide how long you should be kept unconscious before reversing the drugs so that you don't suffer from any long-term side effects. Generally, patients can be weaned off of these medications over time as their bodies recover.