Aero embolism, also known as gas embolism, is a condition that occurs when air or gas enters the bloodstream. It can be a life-threatening condition and requires immediate medical attention. Synonyms for aero embolism or gas embolism include air embolism, pulmonary barotrauma, decompression sickness, and arterial gas embolism. While these terms have slightly different meanings and causes, they all refer to the presence of gas or air in the bloodstream. Some common causes of aero embolism include scuba diving, medical procedures that involve the use of air or gas, and severe trauma that causes damage to the lungs or blood vessels.