Pulmanary flow | PGIMER entrance Preparations

Pulmanary flow is decreased in

A. Fallot’s tetralogy
B. Ebstein’s anomaly 
C. Common atria 
D. TGV with intact septum 
E. Postoperative TGV correction

Ans. A. Fallot’s tetralogy ; (B) Ebstein’s anomaly.

• The route of blood flow in complete Transposition of great vessels (TGA) results in two separate circulation and survival depends on mixing that occur at a trial, ventricular or great vessel level. In TGA with intact septum, mixing occurs through foramen ovale and being small, the mixing is poor. Pulmonary plethora is seen. 

• In corrected TGA, route of blood flow is normal. Haemodynamics depend on associated anomalies.

• Normal or Decreased pulmonary blood flow with cyanosis is seen in

- Tricuspid atresia 

- Ebstein’s anomaly with atrial shunt 

- Pulmonary atresia with intact ventricular septum

- Pulmonic stenosis or atresia with VSD 

- Pulmonic stenosis with right to left atrial shunt

- Complete TGA with pulmonic stenosis 

- Double — out left ventricle with pulmonic stenosis 

- Single ventricle with pulmonic stenosis 

- Pulmonary AV fistula 

- Vena cava to Lt atrial communication. 

• Pulmonary blood flow increased in common artria.