title: [The alteration of intrapulmonary shunt and Va/Q distribution as a cause of postoperative hypoxemia after upper abdominal surgery].
mesh_terms: D000005:Abdomen / Q000601:surgery*; D000328:Adult; D000368:Aged; D002245:Carbon Dioxide / Q000097:blood; D006801:Humans; D000860:Hypoxia / Q000209:etiology*; D008875:Middle Aged; D010100:Oxygen / Q000097:blood; D010101:Oxygen Consumption; D011183:Postoperative Complications; D011659:Pulmonary Gas Exchange; D014692:Ventilation-Perfusion Ratio
chemical_list: D002245:Carbon Dioxide; D010100:Oxygen