Alfentanil Causes Less Postoperative Nausea and Vomiting than Equipotent Doses of Fentanyl or Sufentanil in Outpatients 

1999 ◽  
Vol 91 (6) ◽  
pp. 1666-1666 ◽  
Author(s):  
Stephan Langevin ◽  
Martin R. Lessard ◽  
Claude A. Trépanier ◽  
Jean-Pierre Baribault

Background The relative potencies of alfentanil, fentanyl, and sufentanil as a risk factor for postoperative nausea and vomiting have not been determined. They were compared in a randomized study designed to obtain equipotent plasma concentrations of these three opioids at the beginning of the recovery period. Methods The study included 274 patients treated on an outpatient basis. The steady state opioid plasma concentration providing a predicted 50% reduction of the minimum alveolar concentration of isoflurane was used to determine the relative potency of the opioids. The opioids were prepared in equal volumes at concentrations of alfentanil 150 microg/ml, fentanyl 50 microg/ml, and sufentanil 5 microg/ml and were administered in vol/kg. Anesthesia was induced in a blinded fashion with a bolus of the study opioid (0.05 ml/kg) and 4-6 mg/kg thiopental and was maintained with isoflurane (0.6-1%) in a nitrous oxide-oxygen mixture with a continuous infusion of the study opioid (0.06 ml x kg(-1) x h(-1)). If necessary, up to five additional boluses of opioid (0.02 ml/kg) could be given. This opioid administration protocol was tested by pharmacokinetic simulations. Results The incidence of postoperative nausea and vomiting was not different in the postanesthesia care unit, but in the ambulatory surgery unit it was significantly lower for alfentanil compared with fentanyl and sufentanil (12, 34, and 35%, respectively P < 0.005). Pharmacokinetic modeling showed that the end-anesthesia opioid plasma concentrations were approximately equipotent in the three groups. However, modeling does not support that the difference between groups in the postoperative period can be explained by a more rapid disappearance of alfentanil from the plasma. Conclusions Alfentanil, compared with approximately equipotent doses of fentanyl and sufentanil, is associated with a lower incidence of postoperative nausea and vomiting in outpatients.

JMS SKIMS ◽  
2011 ◽  
Vol 14 (1) ◽  
pp. 11-14
Author(s):  
Abdul Qayoom Lone ◽  
Shruti Sharma ◽  
Mohamad Ommid ◽  
Showkat H Nengroo ◽  
Imtiyaz Naqash

BACKGROUND: Post operative nausea and vomiting (PONV) continue to be frequent occurrences, even when conventional antiemetics are prophylactically used. OBJECTIVE: To compare the efficacy of Granisetron over Droperidol in the prevention of PONV in patients undergoing elective open cholecystectomy under general anesthesia. MATERIAL & METHODS: In this double blind randomized study, 100 adult patients with physical status ASA I and II, (age, 20-60 years), were randomly allocated into two groups, X or Y, to receive either injection Granisetron hydrochloride (3 mg i/v) or Droperidol (2.5 mg i/v), 5 min prior to induction of general anesthesia. The incidence of nausea and vomiting was recorded every six hourly for a period of 24 hour after the surgery. RESULTS: 6 (12%) patients in the granisetron group and 20 (40%) patients in the Droperidol group reported an emetic episode, (p = 0.002); the incidence of PONV in the total 24 hr period after the surgery, 54% in the granisetron group and 76% in Droperidol group (p = 0.022) CONCLUSIONS: It was found that granisetron is superior to Droperidol in the prevention of postoperative nausea and vomiting. JMS 2011;14(1):11-14


1997 ◽  
Vol 87 (4) ◽  
pp. 779-784 ◽  
Author(s):  
T. J. Gan ◽  
P. S. A. Glass ◽  
S. T. Howell ◽  
A. T. Canada ◽  
A. P. Grant ◽  
...  

Background Subhypnotic doses of propofol possess direct antiemetic properties. The authors sought to determine the plasma concentration of propofol needed to effectively manage postoperative nausea and vomiting. Methods Patients aged 18-70 yr who were classified as American Society of Anesthesiologists physical status 1 or 2 and had surgery during general anesthesia were approached for the study. Only patients who had nausea (verbal rating score > 5 on a 0- to 10-point scale), retching, or vomiting in the postanesthetic care unit participated. Propofol was administered to these patients to achieve target plasma concentrations of 100, 200, 400, and 800 ng/ml using a computer-assisted continuous infusion device. Target concentrations were increased every 15 min until patients described at least a 50% reduction in symptoms on the verbal rating score. An arterial blood sample was obtained at each step. The measured plasma propofol concentrations were used to analyze data. Blood pressure, heart and respiratory rates, arterial blood saturation, sedation score, and overall satisfaction with treatment were recorded. Results Of the 89 patients who consented to the study, 15 patients met entry criteria and were enrolled. Five of these patients also had retching or vomiting when they entered the study. Fourteen patients responded successfully to treatment. One patient did not achieve the required response at plasma concentrations of 830 ng/ml. Hence the success rate for the treatment of postoperative nausea and vomiting was 93%. Among patients who responded, the median plasma concentration associated with an antiemetic response was 343 ng/ml. There was no difference in sedation scores from baseline and no episodes of desaturation. Hemodynamic parameters were stable during the study. Conclusions Propofol is generally efficacious in treating postoperative nausea and vomiting at plasma concentrations that do not produce increased sedation. Simulations indicate that to achieve antiemetic plasma propofol concentrations of 343 ng/ml, a bolus dose of 10 mg followed by an infusion of approximately 10 microg x kg(-1) x min(-1) are necessary.


2020 ◽  
Vol 130 (1) ◽  
pp. 141-150 ◽  
Author(s):  
Craig S. Jabaley ◽  
Dennis W. Gray ◽  
Gaurav S. Budhrani ◽  
Grant C. Lynde ◽  
Panagiotis Adamopoulos ◽  
...  

Author(s):  
Gisele Vissoci Marquini ◽  
Francisco Edes da Silva Pinheiro ◽  
Alfredo Urbano da Costa Vieira ◽  
Rogério Melo da Costa Pinto ◽  
Maria Gabriela Baumgarten Kuster Uyeda ◽  
...  

Abstract Objective To investigate the effects of preoperative fasting abbreviation with a carbohydrate and protein-enriched solution, on postoperative nausea and vomiting (PONV) incidence in gynecological surgery patients, a population naturally at risk for such unpleasant episodes. Methods The present prospective double-blind randomized study was performed at The Hospital Municipal e Maternidade Dr. Odelmo Leão Carneiro (HMMOLC, in the Portuguese acronym), in Uberlândia, state of Minas Gerais, Brazil, in partnership with the Gynecology Department of the Universidade Federal de São Paulo (UNIFESP), approved by the Human Research Ethics Committee of UNIFESP and the board of HMMOLC, and included in the Brazil Platform and in the Brazilian Clinical Trial Registry. After signing the consent form, 80 women, who were submitted to gynecological surgery in the period from January to June 2016, were randomized into 2 groups: control group (n = 42) and juice group (n = 38). They received, respectively, 200 mL of inert solution or liquid enriched with carbohydrate and protein 4 hours presurgery. The incidence, frequency and intensity of PONV were studied using the Visual Analogue Scale (VAS), with statistical analysis performed by the software IBM SPSS Statistics for Windows, Version 20.0 (IBM Corp, Armonk, NY, USA). Results The incidence of nausea and vomiting was lower than in the literature, to this population, with 18.9% (14/74) for the control group and 10.8% (8/74) for the juice group, respectively, with no statistically significant difference between the groups. Conclusion The incidence of nausea and vomiting was lower than in the literature, but it cannot be said that this is due to the abbreviation of fasting. It can provide greater comfort, with the possibility of PONV prevention in patients at risk for these episodes.


2000 ◽  
Vol 92 (4) ◽  
pp. 1035-1042 ◽  
Author(s):  
Senthilkumar Sadhasivam ◽  
Dilip Shende ◽  
Rashmi Madan

Background This study evaluated the antiemetic effectiveness, dose-response, and clinical usefulness of prophylactic ondansetron in the prevention of postoperative nausea and vomiting (PONV) in children undergoing strabismus repair. Method The authors observed 180 children, American Society of Anesthesiologists physical status I or II, 2-12 yr of age, who were undergoing strabismus repair. After induction of anesthesia with halothane and nitrous oxide in oxygen or intravenous thiopental, children received either placebo (saline) or intravenous ondansetron in doses of 25, 50, 75, 100, and 150 /microg/kg (n = 30). The trachea was intubated and ventilation was controlled. Perioperative analgesic and fluid requirements were standardized. Episodes of nausea and vomiting were recorded for the first 24 h postoperatively. Data such as nonsurrogate (parental satisfaction scores and duration of postanesthesia care unit stay) and therapeutic (numbers needed to prevent and harm) outcome measures were collected. Results The incidences of PONV in the placebo and 25-, 50-, 75-, 100-, and 150-,microg/kg ondansetron groups were 83, 77, 47, 30, 30, and 27%, respectively. The incidence was less in the 75(P = 0.002), 100- (P = 0.002), and 150-microg/kg (P < 0.001) ondansetron groups compared with placebo. Duration of stay in the postanesthesia care unit was shorter in the 75-, 100-, and 150-microg/kg ondansetron groups (P < 0.002) compared with the placebo group. Parental assessment scores for the child's perioperative experience and the positive number needed to prevent PONV were also better and favorable in the 75-, 100-, and 150-microg/kg ondansetron groups compared with the placebo group. The incidence (P > 0.99) and severity (P = 0.63) of PONV were similar in the 75- and 150-microg/kg ondansetron groups. Surrogate, nonsurrogate, and therapeutic outcome measures revealed that 75 microg/kg ondansetron provided the same benefits as did 100 and 150 microg/kg. Conclusion The routine prophylactic use of ondansetron at a dose of 75 microg/kg is as effective as 150 microg/kg in preventing PONV and improving the "true" outcome measures after strabismus repair in children.


1995 ◽  
Vol 83 (5) ◽  
pp. 956-960 ◽  
Author(s):  
Peter J. Davis ◽  
Francis X. McGowan Jr. ◽  
Ira Landsman ◽  
Karen Maloney ◽  
Paul Hoffmann

Abstract Background Postoperative nausea and vomiting continue to be a significant problem for pediatric ambulatory surgery patients. Although ondansetron has been demonstrated to be effective in the prophylactic treatment of postoperative nausea and vomiting (surrogate end point) no one has demonstrated a benefit of antiemetic therapy on patient recovery, postanesthesia care unit length of stay, and hospital length of stay (nonsurrogate end points). In a double-blind manner, the effects of ondansetron, droperidol, and placebo on the incidence of emesis, postanesthesia care unit stay, and hospital discharge time were evaluated in children undergoing dental surgery.


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