Effectiveness of Preoxygenation in Morbidly Obese Patients

Abstract

The time taken for the oxygen saturation (SpoJ to decrease to 90%after preoxygenation was studied in six morbidly obese patients and six matched controls of normal weight. During apnoea the obese patients maintained Sp02*gt;90% for 196 (SD 80) s(range55–208 s), compared with 595 (so 142)s (range 430–825 s) in the control group (?