Sir,—Koski and colleagues [1] found no difference in the incidence of nausea and vomiting in patients receiving transdennal hyoscine or placebo before operation. This is at variance with the findings of others [2]. A number of points warrant mention. In the study of Koski, different types of surgery were performed, whereas only patients having gynaecological surgery were studied by Uppington, D...

We have compared the effectiveness of ondansetron (115 patients) and metoclopramide (101 patients) for prevention of postoperative nausea and vomiting in patients undergoing cardiac surgery involving cardiopulmonary bypass. In a prospective, randomized, controlled, double-blind study, patients received oral ondansetron 16 mg or oral metoclopramide 10 mg, 1-2 h before surgery. Anaesthesia was no...

BACKGROUND Some patients treated with ondansetron for postoperative nausea and vomiting do not respond to therapy. One possible mechanism for this failure is ultrarapid drug metabolism via the cytochrome P-450 system, specifically the enzyme 2D6 (CYP2D6). Ultrarapid metabolism is seen in patients with multiple functional copies (>/= 3) of the CYP2D6 allele. This study was designed to determine ...

Background: Post-operative nausea and vomiting (PONV) following surgical operations requiring general anesthesia are common and distressing. The incidence of PONV may be as high as 70% during the first 24 hrs of tonsillectomy. Objective: This study determines the effects of intraoperative well-hydration on postoperative nausea and vomiting. Methods: 90 ASA I patients with age of 6-12 years sche...

BACKGROUND AND OBJECTIVES Inguinal herniorrhaphy is one of the most common surgeries in men. Neuroaxis block is the anesthetic technique used more often and in the majority of the cases the patient is ready to be discharged from the hospital a few hours after the procedure, as long as satisfactory analgesia is present and nausea and vomiting are absent. Tramadol is an analgesic drug that can be...