Evaluation of an air embolism starts with a history and physical examination. The type, length and depth of dive is important to know for treatment of those with scuba injuries.

Physical findings in someone with an air embolism include:

• Skin bruising or rash
• Subcutaneous emphysema (air in the soft tissues)
• Tenderness of the muscles or joints
• Neurological deficits such as weakness, numbness or balance problems
• Rapid pulse
• Rapid breathing rate

The diagnosis of an air embolism is usually made without testing.

Tests that may be used to evaluate an air embolism include:

• CT scanning of the brain
• MRI scan of the brain
• Echocardiography
• Electrocardiogram