A shunt draining from SVC (superior vena cava) to RPA (right pulmonary artery) is:
a) BT (Blalock-Taussig) shunt
b) Waterston’s shunt
c) Pott’s shunt
d) Glen shunt
Answer: d) Glen shunt
BT (Blalock-Taussig) shunt is between subclavain and pulmonary artery. Waterston’s shunt is between ascending aorta and right pulmonary artery while Pott’s shunt is between descending aorta and left pulmonary artery. Both of them are called central aortopulmonary shunts like the Davidson’s shunt between ascending aorta and the main pulmonary artery. All the central shunts have a higher chance of producing pulmonary vascular disease and hence gone into disrepute.