title: Pulmonary arterio-venous fistula. A shunt equation exercise during thoracotomy.
abstract: A report is given of a patient with multiple bilateral pulmonary arterio-venous fistulae who underwent right thoracotomy for this condition. Blood-gas studies before and during surgery showed that the arterio-venous oxygen content differences of 1-16-1-34 mmol/l were less than normal, and the calculated venous admixture during the procedure varied from 44 to 60% of cardiac output. The changes in venous admixture at various stages of the operation could not be predicted on the basis of evidence derived from normal lungs.
mesh_terms: D000328:Adult; D001164:Arteriovenous Fistula / Q000503:physiopathology / Q000601:surgery*; D002302:Cardiac Output; D006801:Humans; D008297:Male; D010100:Oxygen / Q000097:blood; D011651:Pulmonary Artery; D011652:Pulmonary Circulation; D011667:Pulmonary Veins; D012119:Respiration
chemical_list: D010100:Oxygen