Effects of µ-Opioid Receptor Gene Polymorphism on Postoperative Nausea and Vomiting in Patients Undergoing General Anesthesia with Remifentanil: Double Blinded Randomized Trial

Objective:To evaluate the efficacy of Metoclopramide versus Dexamethasone for prevention of postoperative nausea and vomiting during general anesthesia. Study Design:This is a Randomized control trial (RCT) study. Setting: Study carried out at Department of Anaesthesiology, Surgical Intensive Care Unit and Pain Management, Clinic, Dow University of Health Sciences and Dr. Ruth Pfau Hospital Karachi, from December 2018 to June 2019. Materials and Methods:110 patients undergoing elective surgeries, who fulfilled the inclusion criteria and gave informed consent were included in the study. They were randomly assigned to either group M or group D, with 55 patients in each group. All patients were then administered either intravenous dexamethasone (8mg) in group D or intravenous metoclopramide (10mg) in group M at the time of induction of anesthesia. The main outcome measure was postoperative nausea and vomiting, at the end of 6th hour postoperatively. The SPSS version 21 was applied to the data. Results: Majority of the patients 66 (60%) were of age 35 years or less. Mean age of the patients was 35.09±11.55 years. There were more females than males, with male to female ratio being 1:1.03. Overall, in patients receiving metoclopramide, 12(21.8%) had postoperative nausea and vomiting, while in patients who received dexamethasone, only 4 (7.3%) patients had post-operative nausea and vomiting. When comparing two groups, there was statistically significant (p= 0.02) reduced postoperative nausea/vomiting among those patients who had received intravenous dexamethasone. Conclusion: Intravenous dexamethasone is more effective than Metoclopramide in preventing postoperative nausea and vomiting in patients during general anesthesia.

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Comparison of Anesthesia Depth Monitoring using Conventional and Bispectral Index on Incidence and Severity of Nausea and Vomiting after Urological Surgeries

Advances in Bioscience and Clinical Medicine ◽

10.7575/aiac.abcmed.v.6n.2p.25 ◽

2018 ◽

Vol 6 (2) ◽

pp. 25

Author(s):

Reihan Shenasi ◽

Hamzeh Hoseinzadeh ◽

Hasan Mohammadpor-Anvari ◽

Davod Aghamohammadi ◽

Reza Sari-Motlagh

Keyword(s):

General Anesthesia ◽

Bispectral Index ◽

Postoperative Nausea ◽

Operating Time ◽

Postoperative Nausea And Vomiting ◽

Nausea And Vomiting ◽

Control Group ◽

Anesthetic Drugs ◽

Urological Surgery ◽

Anesthesia Depth

Bispectral index parameter is used to guide the titration of general anesthesia. This monitoring improves recovery times and hospital discharges, as well as minimizes adverse events. The objective of this study is the comparison of anesthesia depth monitoring by conventional and bispectral index on nausea and vomiting after urological surgery. 180 participants who were scheduled for abdominal urological surgery were studied. Patients before induction of anesthesia were randomize into two groups with and without bispectral index monitoring. Incidence and severity of nausea and vomiting were recorded every 30 minutes for 2 hours and every 6 hours to 24 hours after surgery. The incidence of postoperative nausea and vomiting in Bispectral index group is 14.4% and 8.9% and in control group 28.9% and 23.3%, respectively. The risk of nausea and vomiting after surgery was reduced by 14.5% and 14.4%, respectively in patients monitored with bispectral index.INTRODUCTIONNausea is the conscious perception of medulla stimulation that is associated with vomiting center and create vomiting response (1). General anesthesia with the use of inhalants can cause nausea and vomiting after surgery (Postoperative nausea and vomiting, PONV). The incidence of PONV is reported about 20-30 percent (2). It seems that multiple-factor can cause PONV and few items such as anesthetic drugs, kind of surgery and personal risk factors is effective on PONV. These factors make into two categories that includes factors out of control by anesthesiologists and factors can control by anesthesiologists.1. Factors out of control by anesthesiologists: some of these factors are age, gender, past history of PONV and motion sickness, smoking, kind of surgery, operating time and anesthesia time, anxiety of patients and parents. 2. Factors controlled by anesthesiologists: these factors are associated of anesthesia settings, including premedications, kind of anesthesia, anesthesia drugs during surPublishedby Australian

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