the effect of oxygen therapy on postoperative nausea and vomiting

the effect of oxygen therapy on postoperative nausea and vomiting     aliakbarzadeh arani z [1] *,gilasi hr [2] , khari arani m [3] ,shouri bidgoli ar [4] , asayesh h [5]     received: 14 apr, 2013 accepted: 15 jun, 2013    abstract  background & aims : postoperative nausea and vomiting (ponv) are the most common complications after surgery which could cause complications and problems for many patients and healthcare systems. this study was performed to evaluate the effect of oxygen therapy on postoperative nausea and vomiting after general surgical operations.   materials & methods : this experimental study was performed on 46 patients undergoing general surgery in kashan shahid beheshti hospital. patients were randomly divided into two groups. anesthesia and drugs in intraoperative and postoperative periods were the same in the two groups. all patients received 50% oxygen during surgery. in intraoperative period all patients inhaled 50% oxygen balanced with n2o. the first group received 80% oxygen in postoperative period (study group), and the second group received routine care of %30 oxygen in recovery room and no oxygen on surgical ward (control group). spo2 and ponv were recorded in recovery and surgical wards. the results were analyzed using chi-square and t test.   results: the rate of nausea and vomiting in intervention and control group patients in the recovery room did not show any significant difference (p>0.05). the rate of nausea in both groups in surgery ward showed no significant difference (p>0.05). the frequency of vomiting among intervention group patients was lower than controls patients and the difference was statistically significant (p=0.01).   conclusion: the results showed that oxygen therapy has no effect on postoperative nausea and vomiting in short-term, but after several hours after surgery it could reduce vomiting in patients.   key words: nausea, vomiting, oxygen, oxygen therapy, surgery     address: educational campus of qom university of medical sciences, paramedical faculty, shahid lavasani street, qom, tel: (+98)9137295893   email: [email protected]   [1] instructor, paramedical faculty, faculty member, qom university of medical sciences. (corresponding author)  [2] instructor, epidemiology department, shahid beheshti university of medical sciences, public health department, kashan university of medical sciences.  [3] msc in islamic education philosophy, kashan education and training organization  [4] instructor, paramedical faculty, faculty member, qom university of medical sciences  [5] instructor, paramedical faculty, faculty member, qom university of medical sciences