A 50-year-old previously healthy woman suddenly lost consciousness while on the toilet at home. Her husband, a firefighter, immediately performed CPR and called an ambulance. When the ambulance crew arrived, Glasgow coma scale score was 3, both pupils were 4.0 mm in diameter, and cardiac rhythm was ventricular fibrillation (VF). Therefore, shock resuscitation was implemented. The patient's heartbeat resumed in 5 min but she suffered repeated cardiac arrest during transport to the hospital and was in cardiac arrest on arrival at the hospital. Immediately after arrival, her heartbeat resumed but this was again followed by cardiac arrest. As the patient continued to repeatedly experience cardiac arrest, percutaneous cardiopulmonary support (PCPS) was initiated. Pupil contraction and spontaneous respiration subsequently resumed 77 min after onset (Table 1).