Right-to-left interatrial shunt after pneumonectomy.

  title={Right-to-left interatrial shunt after pneumonectomy.},
  author={N C Bakris and Aheed J. Siddiqi and Charles D Fraser and Atul C. Mehta},
  journal={The Annals of thoracic surgery},
  volume={63 1},
BACKGROUND Platypnea and Orthodeoxia have been described with congenital heart and severe lung diseases. METHODS We report 4 patients in whom platypnea and orthodeoxia developed after pneumonectomy. In these patients the mean oxygen saturation on room air was 65% (range, 45% to 79%) in the supine position. On O2 therapy it improved to 94% (range, 80% to 99%). When the patients assumed the erect position and were receiving O2 therapy the saturation dropped to a mean of 76% (range, 56% to 82… CONTINUE READING