Which of the following is a basic symptom of an air embolism?

An air embolism occurs when air bubbles enter the bloodstream and can cause various symptoms due to the disruption of normal circulation. Vision blurring is a key symptom associated with an air embolism, as it can indicate that the air bubbles have traveled to the brain, affecting the areas responsible for processing visual information. This neurological impact can lead to a range of visual disturbances, including blurriness.

In contrast, chest pain, nausea, and high fever are not typically associated with air embolisms. Chest pain might suggest other conditions such as a heart issue or lung problem, nausea could stem from a variety of factors unrelated to air embolism, and high fever is generally indicative of an infection rather than an air bubble presence in the circulatory system. Therefore, vision blurring stands out as a distinct and relevant symptom of an air embolism.