Which signs indicate an IV-related air embolism and what are the immediate interventions?

• A. Sudden chest pain, dyspnea, cough, hypotension; clamp the line, position patient on left side in Trendelenburg, give oxygen, call for help.
• B. Sneezing and runny nose.
• C. Headache only.
• D. No symptoms.

Answer: (A)

IV-related air embolism presents when air enters the venous system and quickly travels to the right side of the heart and the lungs. The signs reflect this obstructive process: sudden chest pain, difficulty breathing (dyspnea), a cough, and a drop in blood pressure due to impaired venous return and pulmonary circulation, leading to hypoxia and potential circulatory collapse.

Immediate management focuses on stopping further air entry and trapping the air away from the lungs while supporting oxygenation. Clamp the IV line to prevent more air from entering. Reposition the patient on the left side with the head down (left lateral Trendelenburg) so the air collects in the right atrium and is less likely to enter the pulmonary artery. Administer high-flow 100% oxygen to help wash out the inert nitrogen from the embolus and improve oxygen delivery. Call for help right away so advanced care can be provided, and monitor the patient closely. If available and you’re trained, consider aspiration of air via a central venous catheter.

Sneezing with a runny nose, headache alone, or having no symptoms would not match the acute, life-threatening picture of an IV air embolism.