Advanced life support (ALS) is a crucial medical intervention that can save a patient's life. There are several synonyms for ALS, including advanced cardiac life support (ACLS), critical care, emergency medical services (EMS), and advanced medical care. These terms are often used interchangeably depending on the context, but they all refer to the same set of medical interventions designed to stabilize and treat critically ill or injured patients. Some other related terms include paramedic care, intensive care, and resuscitation services. Regardless of the specific terminology used, advanced life support is a vital component of modern medical care, helping to ensure that patients receive the best possible chance of survival in emergency situations.