We report a case of severe aneurysmal subarachnoid hemorrhage (SAH) associated with pulmonary edema (PE) that was treated using endovascular surgery. A 65-year-old female was brought to our hospital with a history of disturbed consciousness. She was diagnosed as suffering from SAH in association with PE. An angiography examination revealed a ruptured anterior communicating artery aneurysm; an intraaneurysmal embolization using Guglielmi detachable coils was performed about 6 hours after the onset of the event. The partient's PE worsened during the first 12 hours after the procedure, necessitating artificial ventilation with a positive end-expiratory pressure. The patient's condition resolved in about 5 days. Endovascular surgery may be useful for the teatment of aneurysmal SAH episodes associated with cardiopulmonary complications. Careful cardiopulmonary monitoring and patient management are necessary in such cases.
