Nonfatal Cerebral Air Embolism After Dental Surgery
Magni, Giuseppina MD, PhD; Imperiale, Carmela; Rosa, Giovanni; Favaro, Roberto
Anesthesia & Analgesia Volume 106(1), January 2008, pp 249-251
Abstract: After removal of four impacted third molars under general anesthesia, our patient developed subcutaneous emphysema, pneumothorax, pneumopericardium, and pneumomediastinum. Soon thereafter, coma with generalized epileptic status ensued. A cerebral magnetic resonance and single photon emission computed tomography showed hypoperfusion of the right thalamus and parietal, temporal, and frontal cortices.
The likely mechanism was injection of air by the high-speed dental drill through the soft tissue adjacent to the roots of the lower molars. We were unable to find any previous report of systemic air embolism after oral surgery.
Pneumomediastinum, pneumothorax, venous air embolism, and even death, have been reported as complications after dental surgery; most of these cases were associated with the use of dental equipment that directed pressurized air or water into gingival defects produced by dental procedures.1–3 Systemic air embolism has been reported as a complication of various surgical operations and invasive maneuvers and is, more often than not, an iatrogenic complication.
4,5 Coma ensuing from cerebral air embolism after dental surgery has not been described.