1. Upper intestinal endoscopy induces hypoxaemia in patients with obstructive pulmonary disease;Rostykus, P.S.; McDonald, G.B.; Albert, R.K.;Gastroenterology,1980
2. Arterial blood gas tensions during upper gastro-intestinal endoscopy;Whorwell, P.J.; Smith, C.L.; Foster, K.J.;Gut,1976
3. The effect of upper gastro-intestinal endoscopy on arterial oxygen tension in smokers and non-smokers with and without premedication;Pecora, A.A.; Chiesa, J.C.; Alloy, A.M.; Santoro, J.; Lazarus, B.;Gastrointest Endosc,1984
4. Arterial oxygen saturation during upper gastrointestinal endoscopy: influence of sedation and operator experience;Lavies, N.G.; Creasy, T.; Harris, K.; Hanning, C.D.;Am J Gastroenterol,1988
5. Arterial oxygen tension changes in elderly patients undergoing upper gastro-intestinal endoscopy II. Influence of the narcotic premedication and endoscope diameter;Rozen, P.; Fireman, Z.; Gilat, T.;ScandJ Gastroenterol,1981