Effects Of Inspiring Oxygen Concentration During Surgery On PaO₂in Morbidly Obese Patients With OSAS In Early Postoperative Period

OBJECTIVETo investigate the effects of inspiring60%or80%oxygen during surgery on blood oxygenation in morbidly obese patients immediately following uvulopalatopharyngoplasty (UPPP) operation.METHODS40morbidly obese patients with obstructive sleep apnea syndrome (OSAS) scheduled for UPPP were randomly allocated to receive either60%(L group) or80%(H group) oxygen during general anaesthesia. Perioperative management was standardized, blood gas analysis were monitored preoperatively and at10min,0.5h,2h after extubation. Extubation time was recorded.RESULTSAt To point, there was no statistical difference between two groups of patients SaO2, PaO2, PaCO2, PH value in arterial blood gas analysis (P>0.05); at T1、T2、T3point respectively, SaO2, PaO2value of L group was obviously higher than that of H group (P<0.05); at T1point, PaCO2value of L group was significantly lower than that of H group (P<0.05)CONCLUSIONCompared with80%oxygen concentration,60%inspired oxygen concentration for morbid obesity patients have better oxygenation, be helpful for early postoperative pulmonary function recovery.