<prompt> Lutembacker syndrome - include AE ?Mitral stenosisASDVSDLeft to right shunt  <response>: Ans. is c i.e., VSD Lutembacher syndrome is defined as a combination of mitral stenosis and a left-to-right shunt at the atrial level. Typically, the left-to-right shunt is an atrial septal defect ASD of the ostium secundum variety. Both these defects, ASD and mitral stenosis, can be either congenital or acquired 