Differential cyanosis and undiagnosed eisenmenger's syndrome: The importance of pulse oximetry

Eisenmenger's physiology has significant anesthetic implications. The symptamology, in the early course of disease can be subtle at times and missed on regular PAC. Pulse oximetry, in our patient detected differential saturations. The possibility of underlying congenital cardiac illness was assumed, rescheduling of case was debated and finally the abnormal cardiac lesions were identified in ECHO in immediate postoperative period.