An arterial gas embolism is described as:

An arterial gas embolism occurs when gas bubbles enter the bloodstream and block blood vessels, which can happen during rapid ascents in diving when gas is released from tissues into the bloodstream. This condition can also result from lung overexpansion injuries, where expanding gases from the lungs create bubbles that can subsequently enter the arterial circulation. This blockage can lead to serious complications, such as reduced blood flow to vital organs and tissue damage. Understanding the mechanics of how gas embolisms occur is crucial for divers to ensure they manage their ascents properly and avoid rapid pressure changes that could lead to this dangerous condition.