Does 80% of oxygen reduce the incidence of post-operative nausea and vomiting?

ABSTRACT

To test the efficacy of supplemental 80% oxygen administration in reducing the incidence of postoperative nausea and vomiting [PONV] after ambulatory gynaecologic laparoscopy. This study was conducted at Al-Wahda Teaching Hospital. One hundred patients were given general anesthesia for ambulatory gynecological surgery. They were divided in to two groups. Group A was administered routine 30% oxygen, and group B was supplemented with 80% oxygen. Evaluation of the two groups in the recovery room and the female surgical ward 24 hours postoperatively revealed the presence of nausea and vomiting. The incidence of PONV was 60% after 30% oxygen administration, and 30% after 80% oxygen administration during the first 24 hours after ambulatory surgery. A day or 24 hours after surgery the patients elucidated more nausea and vomiting. Group A 62% and group B 55%. Antiemetic drugs was given to 27% of patients in group B. Supplemental 80% oxygen did not prevent PONV in patients undergoing ambulatory gynaecologic laparoscopy.