Dr. Smita Mishra, Paediatric Cardiologist, Associate Director - Jaypee Hospital, will talk on the topic when should surgery be done in single ventricle, in this video. If single ventricular heart is presenting with symptoms of hypoxia, cyanosis, then these babies should be put on beta blockers and iron. If these babies are having frequent attacks of cyanotic and hypoxic spells then a BT shunt surgery is advised.