Mohammed Al-Sadawi¹, Romy Rodriguez Ortega¹, Naseem Hossain¹, Yusra Qaiser¹, Samy I. McFarlane^1,

Iatrogenic air embolism is associated with significant morbidity and mortality. Retrograde cerebral venous air embolism is most frequently associated with manipulation of venous access most commonly from central venous catheters. The ascension of air to the cerebral circulation is possibly due to the low specific gravity of air compared to blood and the performance of procedures in the sitting position. Increased right ventricular pressures in the setting of pulmonary thromboembolism may also contribute to the retrograde flow of air. We present the case of a 61-year-old woman who developed a massive pulmonary embolism and pneumocephalus, which was evident during contrast enhanced CT pulmonary angiography. Neurological deficits were not apparent and air resorption occurred after 48 hours of high flow oxygen therapy.

air embolism, pneumocephalus, intravenous contrast, cerebral air embolism