Air Embolism

An air embolism, or more generally gas embolism, is a pathological condition caused by gas bubbles in a vascular system. The most common context is a human body, in which case it refers to gas bubbles in the bloodstream (embolism in a medical context refers to any large moving mass or defect in the blood stream). However air embolisms may also occur in the xylem of vascular plants, especially when suffering from water stress.