"Normal" PaO2 and SaO2 in elderly patients and the effect of premedication with atropine and meperidine.
D000293:Adolescent; D000328:Adult; D000368:Aged; D001285:Atropine / Q000009:adverse effects*; D002245:Carbon Dioxide / Q000097:blood; D006801:Humans; D006863:Hydrogen-Ion Concentration; D000860:Hypoxia / Q000139:chemically induced*; D008614:Meperidine / Q000009:adverse effects*; D008875:Middle Aged; D010100:Oxygen / Q000097:blood*; D011183:Postoperative Complications; D011229:Preanesthetic Medication / Q000009:adverse effects*
D002245:Carbon Dioxide; D001285:Atropine; D008614:Meperidine; D010100:Oxygen