[Effects of recruitment maneuver on elderly patients after major operations].
D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D006801:Humans; D008297:Male; D011175:Positive-Pressure Respiration / Q000379:methods*; D011183:Postoperative Complications / Q000517:prevention & control; D001261:Pulmonary Atelectasis / Q000209:etiology / Q000517:prevention & control*; D016896:Treatment Outcome