An unconscious 75-year-old female was admitted to our hospital. She went into cardiopulmonary arrest in the emergency room, but was resuscitated successfully. Abdominal computed tomography revealed a massive hematoma in the stomach. Gastrointestinal endoscopy was performed, but the source of the bleeding could not be identified. An emergency laparotomy was performed under a diagnosis of a hemorrhagic gastric ulcer. Laparotomy revealed ulcerative lesions in the posterior wall of the upper body of the stomach. A total gastrectomy was performed and the patient was rescued. On postoperative day 35, Roux-Y reconstruction was performed. We report herein on a case of cardiopulmonary arrest due to a hemorrhagic gastric ulcer successfully treated with a two staged operation and discuss the clinical implications based on a review of the literature.