We present a case of a 29-year-old woman whom, while undergoing an elective gynecological procedure, acutely arrested. Closed chest cardiopulmonary compressions were not effective. Fortuitously, the cardiac surgical team was in an adjacent operating room, about to start an elective bypass case. After sternotomy, the patient was placed on cardiopulmonary bypass within 20 min of the arrest. The patient achieved return of spontaneous circulation and was ultimately discharged with only mild extremity weakness. The etiology of the arrest was never fully explained. Open chest massage and cardiopulmonary bypass should be considered early in the management of unexpected cardiac arrest, especially in the operating room where surgical expertise should be immediately available. Surgeons and anesthesiologists need to be aware of, and consider, the possibility of employing these techniques.