A crash cart is a set of trays on a wheeled cart used in hospitals and emergency rooms which contains all the basic equipment necessary to follow ACLS protocols and save someone's life, i.e. a defibrillator and intravenous medication. A physician visiting the sick in a hospital. ... The emergency room is the American English term for a room, or group of rooms, within a hospital that is designed for the treatment of urgent and medical emergencies. ... Advanced cardiac life support (ACLS) is a detailed medical protocol for the provision of lifesaving cardiac care in settings ranging from the pre-hospital environment to the hospital setting. ... A semi-automatic external defibrillator ( AED) A defibrillator is a device that performs defibrillation on the chambers of the heart. ... An intravenous drip in a hospital Intravenous therapy or IV therapy is the administration of liquid substances directly into a vein. ...

Hospitals typically have internal intercom codes used for situations when someone has gone into cardiac arrest or a similar near-death condition outside of the emergency room or operating room (where such conditions already happen all the time and do not require special announcements). When such codes are given, hospital staff and volunteers are expected to clear the corridors, and to direct visitors to stand aside; the crash cart and a team of physicians and nurses may come flying through at any moment.