In most instances, Medicare pays 80% of the approved amount of doctor bills; you or your medigap plan pay the remaining 20%, if your doctor accepts assignment of that amount as the full amount of your bill. Most doctors who treat Medicare patients will accept assignment.
An Ambu bag is a trademarked brand of hand-held, self-inflating resuscitators used by medical personnel to provide an emergency air supply to patients. It was developed in 1956.... Star Gazing
When a patient has general anesthesia it causes the body to be basically paralyzed so that no pain can be felt. When the patient is paralyzed, the respiratory muscles are also paralyzed and the patient cannot breathe on his or her own. For this reason the anesthesiologist inserts an endotracheal tube down into the respiratory passage and connects what is called an Ambu bag connected to oxygen.