What is the definition of an air embolus?

An air embolus is defined as a medical condition that occurs when a significant amount of air enters the blood vessels or heart, leading to a blockage of blood supply. This introduction of air into the vascular system can obstruct blood flow, potentially causing serious complications, such as reduced oxygen delivery to tissues and organs, or even stroke, myocardial infarction, or death in severe cases. Understanding this definition is crucial for healthcare professionals, especially those involved in vascular access, as it emphasizes the importance of preventing air entry during procedures like catheter placement or removal.

The other definitions provided refer to different medical conditions or complications, such as vascular injury, inflammation due to infection, or excessive bleeding, which are important concepts in vascular access but are not related to the definition of an air embolus. It's essential to distinguish these terms to ensure accurate diagnosis and appropriate management of complications during vascular access procedures.