Fig. 2From: Intraoperative cardiac arrest caused by unexpected vasospastic angina requiring prolonged resuscitation using extracorporeal membrane oxygenation: a case reportElectrocardiogram (ECG) during surgery. Initial ECG shows no abnormalities a The ST segment elevated, followed by the emergence of ventricular fibrillation after 110 s b Spontaneous circulation returned 77 min post-cardiac arrest cBack to article page