1. Pulmonary complications, ventilation, and blood gases after upper abdominal surgery;Hansen;Acta Anaesthesiol Scand,1977
2. A randomized, controlled trial to determine the effectiveness of fascial infiltration of bupivacaine in preventing respiratory complications after elective abdominal surgery;Egan;Surgery,1988
3. Risk factors of postoperative pulmonary complications after vascular surgery;Vodinh;Surgery,1988
4. Pulse oximetry: a review of the theory, accuracy, and clinical applications;Bowes;Obstet Gynecol,1989
5. Evaluation of pulse oximetry;Yelderman;Anesthesiology,1983