What is the condition characterized by air entering the veins?

Air embolism is the condition characterized by air entering the veins. This can occur when air is introduced into the vascular system and can lead to serious complications, such as obstruction of blood flow, which may result in tissue damage or even death.

When air enters the circulatory system, it can travel to the heart, lungs, or brain, leading to critical situations. For example, if air reaches the brain, it can cause neurological deficits similar to those seen in a stroke. Understanding the risks associated with air embolism is crucial for first responders, as early recognition and intervention can significantly affect outcomes.

The other options do not pertain to air entering the veins. Hemorrhage refers to excessive bleeding from blood vessels, cardiac arrest involves the heart stopping, and a stroke is caused by interrupted blood flow to the brain, typically due to a clot or vessel rupture, not by air in the bloodstream. Therefore, air embolism is distinctly recognized for its association with air entering the veins and the potential consequences that arise from it.