[Postoperative nausea and vomiting and opioid-induced nausea and vomiting: guidelines for prevention and treatment].
ABSTRACT Postoperative nausea and vomiting (PONV) causes patient discomfort, lowers patient satisfaction, and increases care requirements. Opioid-induced nausea and vomiting (OINV) may also occur if opioids are used to treat postoperative pain. These guidelines aim to provide recommendations for the prevention and treatment of both problems. A working group was established in accordance with the charter of the Sociedad Española de Anestesiología y Reanimación. The group undertook the critical appraisal of articles relevant to the management of PONV and OINV in adults and children early and late in the perioperative period. Discussions led to recommendations, summarized as follows: 1) Risk for PONV should be assessed in all patients undergoing surgery; 2 easy-to-use scales are useful for risk assessment: the Apfel scale for adults and the Eberhart scale for children. 2) Measures to reduce baseline risk should be used for adults at moderate or high risk and all children. 3) Pharmacologic prophylaxis with 1 drug is useful for patients at low risk (Apfel or Eberhart 1) who are to receive general anesthesia; patients with higher levels of risk should receive prophylaxis with 2 or more drugs and baseline risk should be reduced (multimodal approach). 4) Dexamethasone, droperidol, and ondansetron (or other setrons) have similar levels of efficacy; drug choice should be made based on individual patient factors. 5) The drug prescribed for treating PONV should preferably be different from the one used for prophylaxis; ondansetron is the most effective drug for treating PONV. 6) Risk for PONV should be assessed before discharge after outpatient surgery or on the ward for hospitalized patients; there is no evidence that late preventive strategies are effective. 7) The drug of choice for preventing OINV is droperidol.
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ABSTRACT: BACKGROUND: Postoperative nausea and vomiting are a common complication after surgery. The objective of the study was to identify risk factors, and to determine the incidence of postoperative nausea and vomiting in a cohort of patients in a tertiary university hospital. METHODS: Prospective cohort study was conducted in a Post Anesthetic Care Unit during a period of 3 weeks. One hundred and fifty-seven adult patients subjected to scheduled non-cardiac and non-intracranial surgery were eligible for the study. Patient perioperative characteristics data were analyzed. The postoperative nausea and vomiting intensity scale and nausea visual analog scale were applied to measure postoperative nausea and vomiting at 6h and 24h after surgery. Descriptive analysis was performed and the Mann-Whitney U, Fisher's exact, or Chi-square tests were applied. A univariate and multivariate logistic binary regressions with calculation of odds ratio (OR) and its 95% confidence interval (95% CI) were performed. RESULTS: Thirty-nine (25%) patients and 54 (34%) patients had postoperative nausea and vomiting at 6h and 24h, respectively. Of the patients who experienced postoperative nausea and vomiting, 6 (15%) had clinically significant postoperative nausea and vomiting (postoperative nausea and vomiting intensity scale>50) at 6h and 9 (23%) at 24h. The majority of patients classified nausea as mild at 6h (57%) and 24h (56%). At 6h, 3 (10%) patients classified nausea as severe, and at 24h 5 (9%) patients reported the same. The median and interquartile ranges for nausea visual analog scale were 40 (20-60) at 6h and 50 (20-60) at 24h. Six patients (14%) at 6h, and 7 (18%) at 24h had a nausea visual analog scale score>75. Patients with postoperative nausea and vomiting intensity scale>50 had higher scores in the nausea visual analog scale at 6h (75 versus 30, P<.05) and 24h (70 versus 40, P<.05). The univariate analysis identified risk factors for postoperative nausea and vomiting: Apfel score>2 (OR 3.2, 95% CI 1.6-6.4, P=.001), previous history of postoperative nausea and vomiting (OR 2.9 95% CI 1.3-6.5, P=.009) and female patients (OR 2.7, 95% CI 1.4-5.4, P=.005). In the multivariate analysis previous history of postoperative nausea and vomiting (adjusted OR 2.5, 95% CI 1.1-5.7, P=.030) and female gender (adjusted OR 2.4, 95% CI 1.2-4.9, P=.015) were considered as independent risk factors for postoperative nausea and vomiting. CONCLUSION: Most of the patients do not have clinically significant postoperative nausea and vomiting. The patients who presented with postoperative nausea and vomiting intensity scale>50 had higher scores in the nausea visual analog scale. Independent risk factors for postoperative nausea and vomiting were previous history of postoperative nausea and vomiting and being female.Revista espanola de anestesiologia y reanimacion 04/2013;
- Revista espanola de anestesiologia y reanimacion 01/2011; 58(1):64-5.
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ABSTRACT: The knowledge of the influence of anesthetic techniques in postoperative outcomes has opened a large field of research in recent years.In this second part, we review some of the major controversies arising from the literature on the impact of anesthetic techniques on postoperative outcomes in 6 areas: postoperative cognitive dysfunction, chronic postoperative pain, cancer recurrence, postoperative nausea/vomiting, surgical outcomes, and resources utilization.The development of protective and preventive anesthetic strategies against short and long-term postoperative complications will probably occupy an important role in our daily anesthetic practice.Dynamic postoperative pain control has been confirmed as one of the basic requirements of accelerated postoperative recovery programs («fast-track surgery»), and it is also a preventive factor for development of chronic postoperative pain.The weight of anesthetic technique on postoperative immunosuppression is to be defined. The potential influence of anesthesia on cancer recurrence, is a highly controversial area of research.The classic pattern of perioperative fluid therapy may increase postoperative complications. On the other hand, the maintenance of normoglycemia and normothermia was associated with a decreased postoperative morbidity.The high volume of surgical procedures means that the adequacy of human, organizational and technological resources have a major impact on overall costs.Revista espanola de anestesiologia y reanimacion 02/2013; 60(2):93–102.