<prompt> Lutembacher syndrome includes all the following exceptMitral stenosisASDVSDLeft to right shunt  <response>: Lutembacher syndrome is defined as a combination of mitral stenosis and a left-to-right shunt at the atrial levelTypically, the left-to-right shunt is an atrial septal defect ASD of the ostium secundum varietyBoth these defects, ASD, and mitral stenosis can be either congenital or acquired.Refer: OP Ghais Textbook of Pediatrics, 8th edition, pg no. 401 