<prompt> Potts shunt is:Rt subclan aery to it pulmonary aeryDescending aoa to left pulmonary aeryLeft subclan to left pulmonary aeryAscending aoa to right pulmonary aery  <response>: In POTTS shunt: The descending aoa is anastomosed to pulmonary aery. Operative treatment of TOF consist of two types: Palliative and Definitive. Palliative treatment consist of anastomosing systemic aery and pulmonary aery to increase the pulmonary blood flow and thus increase amount of oxygenated blood reaching systemic circulation. Ref: Kliegman, Behrman, Jenson, Stanton 2008, Chapter 430.1, Tetralogy of Fallot, In the book, NELSON TEXTBOOK OF PEDIATRICS, Volume 2, 18th Edition, New Delhi, Pages 1908-10 ; O P Ghai Essential Pediatrics, 6th Edition, Page 409 