What is Palliative Outflow Patch ?
Brock described closed pulmonary valvotomy and infundibular resection using a punch on a beating heart. When both pulmonary arteries are not suitable for shunt (less than 2.5 or 3 mm) systemic pulmonary shunts will no1 succeed? In these babies a palliative outtlow patch repair could be done on cardio pulmonary bypass. Ventricular septa1 defect is left open. At a later stage when the pulmonary arteries are sufficiently large, ventricular septal defect is closed with a patch.