title: Postoperative hypoxemia due to opening of a patent foramen ovale confirmed by a right atrium-left atrium pressure gradient during mechanical ventilation.
mesh_terms: D001021:Aortic Valve / Q000601:surgery*; D016275:Atrial Function; D001026:Coronary Artery Bypass; D006344:Heart Septal Defects, Atrial / Q000503:physiopathology*; D006801:Humans; D000860:Hypoxia / Q000209:etiology*; D008297:Male; D008875:Middle Aged; D011175:Positive-Pressure Respiration / Q000009:adverse effects; D011183:Postoperative Complications / Q000209:etiology; D011312:Pressure