Research Article

The Effect of Ondansetron on the Analgesic Efficacy of Tramadol in Patients Undergoing Laparoscopic Cholecystectomy

Figure 2

The heart rate did not differ significantly between the groups, except for the first postoperative hour: 78.64/min in group O versus 72.74/min in Group S (). Group O, n = 28; Group S, n = 27.