Occurrence Of Postoperative Nausea And Vomiting Research Articles

Analysis of postoperative nausea and vomiting in patients with lung cancer undergoing thoracoscopic surgery under general anesthesia and its influencing factors: a observational study

ObjectiveTo investigate the current situation and influencing factors of postoperative nausea and vomiting (PONV) in lung cancer patients undergoing thoracoscopic surgery under general anesthesia, providing a reference for developing targeted PONV prevention and management strategies.MethodsUsing a consecutive sampling method, 200 lung cancer patients who underwent their first thoracoscopic surgery under general anesthesia between November 18, 2021, and March 1, 2022, at a tertiary class A cancer hospital in Liaoning Province, China, were selected. The occurrence of PONV within 24 h post-operation was assessed using WHO Postoperative Nausea and Vomiting Rating Criteria. Patient general information, surgical and medication data were systematically collected to analyze the independent influencing factors of PONV.ResultsAmong the 200 patients undergoing thoracoscopic lung cancer surgery under general anesthesia, 75 (37.5%) experienced PONV. Logistic regression analysis indicated that being female, having a history of motion sickness, and a history of PONV were independent risk factors for the occurrence of PONV in these patients. Long-acting antiemetics such as penehyclidine hydrochloride and methylprednisolone were protective factors against PONV.ConclusionThe incidence of PONV in patients undergoing thoracoscopic lung cancer surgery under general anesthesia is relatively high. Nursing staff should focus on female patients and those with a history of motion sickness and PONV. Comprehensive preoperative assessments should be conducted, exploring multimodal analgesia and applying integrated prevention measures to reduce the occurrence of PONV and promote the rapid recovery of patients.

The comparison of erector spinae plane block and caudal block for postoperative analgesia in paediatric surgery - meta-analysis

<p><strong>Aim </strong>To assess the efficacy of Erector Spinae Plane Block (ESPB) compared to caudal block in reducing postoperative pain in paediatric surgery.<br /><strong>Methods </strong>An electronic literature search was conducted using the Cochrane Library, PubMed, and Google Scholar databases, with data collected from January 2018 until September 2023. This meta-analysis includes English-language randomized controlled trials (RCTs) studies contrasting ESPB with caudal block in paediatric patients. The primary outcome was the 24-hour postoperative pain scores. The secondary outcome included the time to rescue analgesia, the number of patients requiring rescue analgesia, and the occurrence of postoperative nausea and vomiting (PONV) and urinary retention.<br /><strong>Results </strong>Five RCTs with 295 samples were included. The results showed no significant difference between ESPB and caudal block in postoperative pain scores at 1st hour SMD (standardized mean difference)  of  -0.17 (95% CI -0.70, 0.36; I2=76%; p= 0.53), 2nd hour of SMD: -0.50 (95% CI -1.21, 0.21; I2=88%; p=0.17), 6th hour SMD -1.09 (95% CI -2.21, 0.03; I2=95%; p = 0.06), 12th hour SMD -0.77 (95% CI -1.75, 0.21; I2=93%; p=0.12), and the 24th hour SMD -0.13 (95% CI -0.39, 0.12;, I2=2%; p=0.30) were found. Furthermore, there was no significant difference in the time first to rescue analgesia, the number of patients requiring analgesia rescue, PONV occurrence, and urinary retention.<br /><strong>Conclusion </strong>ESPB and caudal block showed equivalent analgesia efficacy and safety in paediatric surgery.</p>

A comparison of ondansetron in preventing postoperative nausea and vomiting for patients with or without preoperative anxiety with painless egg retrieval: a prospective, randomized, controlled trial.

Patients undergoing painless egg retrieval are prone to preoperative anxiety, and whether preoperative anxiety induces postoperative nausea and vomiting (PONV) is debated. The primary objective of this prospective, randomized, controlled study was to compare the clinical effect of ondansetron in preventing PONV for patients with and without preoperative anxiety. The secondary objective was to investigate whether preoperative anxiety was associated with PONV. The self-rating anxiety scale (SAS) was used to assess the anxiety patients undergoing painless egg retrieval. Patients with a SAS standard score of 50-60 were selected to the anxiety group (n=105); and patients with a SAS standard score of 25-35 were assigned to the non-anxiety group (n=104). Venous blood samples of both groups of patients were obtained during admission and 1 hour after surgery, and all serotonin (5-HT) levels were tested using an enzyme-linked immunosorbent assay. The anxiety group was then randomly assigned into two subgroups: ondansetron (AO group, n=53) and placebo saline (AS group, n=52). Similarly, patients in the non-anxiety group were also randomly assigned to one of two subgroups: ondansetron (NO group, n=51) and placebo saline (NS group, n=53). The AO and NO groups received 8 mg (4 mL) of intravenous ondansetron 15 minutes before surgery, while the AS and NS groups received an equivalent volume (4 mL) of normal saline. We then analyzed the vital signs, risk factors for nausea and vomiting, intraoperative anesthetic doses, incidences of nausea and vomiting in 24 hours after surgery, serum 5-HT level before and after surgery, other adverse responses, pain scores, and satisfaction. A total of 200 patients eventually completed this study. The serum 5-HT values in the anxiety group were higher before and after surgery than in the non-anxiety group (P<0.05), but there was no significant difference in serum 5-HT before and after surgery in the same group (P>0.05). The incidence of PONV was more significant in the AS group than in the NS group (P<0.05). The incidence of PONV was also higher in the AS group than in the AO group (P<0.05). Still, there was no statistically significant difference between the NO and NS groups (P>0.05). There were no significant differences between the four groups in vital signs, risk factors for nausea and vomiting, intraoperative anesthetic doses, other adverse responses and pain scores (P>0.05). Patients in the AS group had lower satisfaction scores than those in the other three groups (P<0.05). Patients experiencing preoperative anxiety have a greater risk of PONV following painless egg retrieval compared to those without preoperative anxiety. Ondansetron can reduce the occurrence of PONV in patients with preoperative anxiety, but it has no discernible preventative effect in non-anxious patients. Chinese Clinical Trial Registry ChiCTR2400079504.

A randomised controlled trial to compare the occurrence of postoperative nausea and vomiting in early versus conventional feeding in children undergoing daycare surgery under general anaesthesia.

The time paediatric patients should resume oral intake after surgery is still ill-defined. No specific evidence suggests that the usual practice of postoperative fasting of 4-6 h to reduce postoperative nausea and vomiting (PONV) is beneficial. The primary objective of this study was to assess the occurrence of PONV with early oral feeding compared to conventional feeding in children undergoing daycare surgery under general anaesthesia. A randomised controlled trial was conducted in 300 children undergoing daycare surgery under general anaesthesia. Children were randomised into the early feeding group (Group EF, n = 150) or the conventional feeding group (Group CF, n = 150). Group EF received carbohydrate-containing oral fluids when the child demanded feed in the postoperative period. Group CF received oral fluids 4 h post-anaesthesia. All patients were monitored for occurrence of PONV, postoperative pain, duration of hospital stay and parental satisfaction. The incidence of PONV was compared using the Chi-squared test, while other continuous variables were compared using the Student's t-test. Both groups were comparable regarding PONV (12% in Group EF vs. 18.7% in Group CF, P = 0.109). The Face, Legs, Activity, Cry, Consolability scores were significantly lower in Group EF at 0 min (P = 0.011), 30 min (P = 0.001) and 1 h (P < 0.001). Patients in Group EF had a significantly shorter duration of hospital stay, that is, 6.31 [standard deviation (SD): 3.52] [95% confidence interval (CI): 1.45-12.24] h in EF versus 10.13 (SD: 2.99) (95% CI: 5.12-16.33) h in CF (P < 0.001). Parents of the children in Group EF had significantly better parental satisfaction scores (P < 0.001). Early postoperative feeding in children undergoing lower abdominal, non-gastrointestinal surgery under general anaesthesia does not increase the incidence of PONV.

Association of the dopamine D2 receptor gene SNP rs1800497 with postoperative nausea and vomiting

BACKGROUND Postoperative nausea and vomiting (PONV) are the most frequent complications in the context of anaesthesia. Several studies suggest a contribution of genetic traits to PONV disposition. Single nucleotide polymorphisms (SNPs) located in the cholinergic receptor muscarinic 3 gene CHRM3 (rs2165870) and the potassium voltage-gated channel subfamily B member 2 KCNB2 (rs349358) have been described as independent risk factors for the occurrence of PONV. In addition, further SNPs might be associated with an increased PONV risk, for example a dopamine D2 receptor (DRD2) SNP (rs1800497). OBJECTIVE The primary aim of our study was the development of a new PONV prediction score which includes genetic information of SNPs in the genes CHRM3 and KCNB2, which have been already associated with PONV. The secondary aim of our study was to investigate the association of five additional SNPs with PONV. DESIGN Prospective cohort study. SETTING Single centre study in Germany. RESULTS We could not establish a new PONV prediction score that includes genetic information, due to limited association of the KCNB2 SNP and CHRM3 SNP with PONV. Interestingly, the GA and AA genotypes of the DRD2 rs1800497 in the dopamine D2 receptor gene were associated with PONV 24 h postoperatively, with a relative risk (RR) of GA/AA genotype vs. GG genotype of 1.5 [95% confidence interval (CI) 1.06 to 2.01, P = 0.02]. This association was independent from the Apfel score in a multivariate logistic regression analysis (RR 1.4, 95% CI 1.03 to 1.90, P = 0.03). CONCLUSION The construction of a new PONV prediction score including genetic information was not possible due to limited association of the CHRM3 and KCNB2 SNPs. However, the DRD2 GA and AA genotypes (rs1800497) were associated with PONV and this SNP might be a future candidate for further validation studies aiming for molecular-derived PONV prediction models. TRIAL REGISTRATION German Clinical Study Register – DRKS00021051.

Predictive value of preoperative ultrasonographic measurement of gastric morphology for the occurrence of postoperative nausea and vomiting among patients undergoing gynecological laparoscopic surgery.

Pre-operative prediction of postoperative nausea and vomiting (PONV) is primarily based on the patient's medical history. The predictive value of gastric morphological parameters observed on ultrasonography has not been comprehensively assessed. A prospective observational study was conducted to evaluate the pre-operative ultrasonographic measurement of gastric morphology for predicting PONV. The gastric antrum of the participants was assessed using ultrasound before anesthesia, and the occurrence of PONV in the first 6 hours and during the 6-24 hours after surgery was reported. The main indicators included the thickness of the muscularis propria (TMP) and the cross-sectional area of the inner side of the muscularis propria (CSA-ISMP). These were recorded and analyzed. Logistic regression analysis was applied to identify factors for PONV. A total of 72 patients scheduled for elective gynecological laparoscopic surgery were investigated in the study. The pre-operative CSA-ISMP of patients with PONV in the first 6 hours was significantly greater than that of those without PONV (2.765 ± 0.865 cm² vs 2.349 ± 0.881 cm², P=0.0308), with an area under the curve of 0.648 (95% CI, 0.518 to 0.778, P=0.031). Conversely, the pre-operative TMP of patients with PONV during the 6-24 hours was significantly smaller than that of those without PONV (1.530 ± 0.473mm vs 2.038 ± 0.707mm, P=0.0021), with an area under the curve of 0.722 (95% CI, 0.602 to 0.842, P=0.003). Logistic regression analysis confirmed that CSA-ISMP was an independent risk factor for PONV in the first 6 hours (OR=2.986, P=0.038), and TMP was an independent protective factor for PONV during the 6-24 hours after surgery (OR=0.115, P=0.006). Patients with a larger pre-operative CSA-ISMP or a thinner TMP are prone to develop PONV in the first 6 hours or during the 6-24 hours after surgery, respectively. http://www.chictr.org.cn (ChiCTR2100055068).

Effect of converting from propofol to remimazolam with flumazenil reversal on recovery from anesthesia in outpatients with mental disabilities: a randomized controlled trial

BackgroundGeneral anesthesia is often necessary for dental treatment of outpatients with mental disabilities. Rapid recovery and effective management of postoperative nausea and vomiting (PONV) are critical for outpatients. This study aimed to investigate the effect of transitioning from propofol to remimazolam with flumazenil reversal administered toward the end of surgery during propofol-based total intravenous anesthesia (TIVA) on recovery.MethodsAdults with mental disabilities scheduled to undergo dental treatment were randomly assigned to receive either propofol-based TIVA (Group P) or propofol-remimazolam-based TIVA with flumazenil reversal (Group PR). Propofol was replaced with remimazolam 1 h before the end of surgery in Group PR; moreover, 0.5 mg of flumazenil was administered after the neuromuscular blockade reversal agent. The primary outcome was the duration of stay in the post-anesthesia care unit (PACU). The secondary outcomes included time to eye-opening, time to extubation, occurrence of PONV, and quality of recovery.ResultsFifty-four patients were included in this study. The duration of stay in the PACU in Group PR was significantly shorter than that in Group P (mean difference, 8.7 min; confidence interval [95% CI], 3.3–14.2; P = 0.002). Group PR exhibited a shorter time to eye opening (mean difference, 5.4 min; 95% CI, 3.3–8.1; P < 0.001) and time to extubation (mean difference, 5.5 min; 95% CI, 3.6–7.9; P < 0.001) than Group P. Neither group required the administration of rescue analgesics, and the incidence of PONV was not reported.ConclusionsTransitioning from propofol to remimazolam 1 h before the end of surgery followed by flumazenil reversal reduced the duration of stay in the PACU and the time to eye opening and extubation without affecting the incidence of PONV and quality of recovery.Trial registration numberClinical Research Information Service (KCT0007794), Clinical trial first registration date: 12/10/2022.

Analysis of influencing factors and construction of prediction model for postoperative nausea and vomiting in patients undergoing laparoscopic sleeve gastrectomy: a single-center retrospective cohort study.

With the increasing number of bariatric surgeries, the high incidence of postoperative nausea and vomiting (PONV) associated with this surgery has also gradually attracted attention. Among the common bariatric surgery methods, patients undergoing sleeve gastrectomy (SG) have the highest incidence of nausea and vomiting. The mechanism of occurrence of PONV is very complex. This study aims to explore the influencing factors of PONV in patients undergoing laparoscopic sleeve gastrectomy (LSG) and construct a nomogram prediction model based on these factors. With the approval of the Ethics Committee, the electronic medical records of patients who underwent LSG from July 2022 to May 2023 were collected retrospectively. A total of 114 patients with complete medical records who underwent LSG from July 2022 to May 2023 were included in this study. Among them, 46 patients developed PONV, resulting in a PONV incidence rate of 40.4%. Multivariate logistic regression analysis revealed that female gender, the use of inhalation anesthesia, and operation time ≥ 120min were risk factors for PONV in LSG. Additionally, the use of more than two kinds of antiemetic drugs was identified as a protective factor. Based on these factors, a nomogram model was constructed. PONV in patients undergoing LSG is related to gender, type of anesthesia, duration of surgery, and combination therapy with antiemetic drugs. The nomogram prediction model constructed in this study demonstrates high accuracy and discrimination in predicting the occurrence of PONV in patients undergoing LSG.

Association between preoperative lumbar skeletal muscle index and postoperative nausea and vomiting in patients undergoing pylorus-preserving pancreatoduodenectomy: a retrospective study.

Sarcopenia is associated with postoperative complications; however, its impact on the quality of postoperative recovery, such as postoperative nausea and vomiting (PONV) and pain, remains unclear. We investigated the association of preoperative lumbar skeletal muscle mass index (LSMI) with PONV, postoperative pain, and complications. Medical records of 756 patients who underwent pylorus-preserving pancreatoduodenectomy (PPPD) were retrospectively reviewed. The skeletal muscle areas were measured on abdominal computed tomography (CT) images. LSMI was calculated by dividing the skeletal muscle area by the square of the patient's height. We analyzed the correlations between preoperative LSMI calibrated with confounding variables and PONV scores, PONV occurrence, pain scores, rescue analgesic administration, postoperative complications, and length of hospital stay. The median (1Q, 3Q) LSMI was 47.72 (40.74, 53.41) cm2/m2. The incidence rates of PONV according to time period were as follows: post-anesthesia care unit, 42/756 (5.6%); 0-6 h, 54/756 (7.1%); 6-24 h, 120/756 (15.9%); 24-48 h, 46/756 (6.1%); and overall, 234/756 (31.0%). The incidence of PONV was inversely correlated with LSMI 24-48 h post-surgery and overall. LSMI and PONV scores were negatively associated 6-24 h and 24-48 h post-surgery. There was no association between LSMI and postoperative pain scores, rescue analgesic administration, complications, or length of hospital stay. Preoperative LSMI was associated with PONV in patients undergoing PPPD. Therefore, LSMI measured on preoperative abdominal CT can be a predictive indicator of PONV. Appropriate PONV prophylaxis is necessary in patients with low LSMI before PPPD.

Opioid-Sparing Anesthesia Versus Opioid-Free Anesthesia for the Prevention of Postoperative Nausea and Vomiting after Laparoscopic Bariatric Surgery: A Systematic Review and Network Meta-Analysis.

Patients who undergo laparoscopic bariatric surgery (LBS) are susceptible to postoperative nausea and vomiting (PONV). Opioid-free anesthesia (OFA) or opioid-sparing anesthesia (OSA) protocols have been proposed as solutions; however, differences between the 2 alternative opioid protocols for anesthesia maintenance in obese patients remain uncertain. A network meta-analysis was conducted to compare the impacts of OFA and OSA on PONV. Systematic searches were conducted using Embase, PubMed, MEDLINE, and Cochrane Library databases to identify randomized controlled trials (RCTs) comparing OFA and OSA strategies. After screening according to the inclusion and exclusion criteria, we used the Grading of Recommendations Assessment, Development, and Evaluation (GRADE) system to assess the credibility of the evidence. The main concern of this review was the difference between OFA and OSA in reducing PONV. The primary outcome was any PONV occurrence within 24 hours. Secondary outcomes included postoperative pain intensity, opioid consumption, opioid-related adverse events, and length of hospital stay. Fifteen RCTs involving 1310 patients were identified for a network meta-analysis from 1776 articles that compared OFA, OSA, and traditional opioid-based anesthesia (OBA) strategies in LBS. Twelve RCTs (80%) with 922 participants (70%) were eligible for the occurrence of PONV. These included 199 (22%) patients who received OFA and 476 (52%) and 247 (27%) patients who received OSA and OBA, respectively. OFA was more effective at reducing PONV (relative risks [RR], 0.6, 95% confidence interval [CI], 0.5-0.9, moderate-quality evidence) compared to OSA. No differences were observed in postoperative pain control or opioid consumption between the OFA and OSA strategies (very low-to high-quality evidence). Notably, OFA is associated with a higher risk of bradycardia than OSA (RR, 2.6, 95% CI, 1.2-5.9, moderate-quality evidence). OFA is more effective than OSA in reducing the occurrence of PONV during the early postoperative period of LBS, although it may associate with an increased risk of bradycardia. Patients who received either opioid-alternative strategy demonstrated similar effects in reducing postoperative opioid consumption and alleviating pain intensity.

Effect of Intermittent Thoracic Paravertebral Block on Postoperative Nausea and Vomiting Following Thoracoscopic Radical Resection of the Lung Cancer: A Prospective Randomized Trial.

To explore the benefits of ultrasound-guided intermittent thoracic paravertebral block (TPVB) combined with intravenous analgesia (PCIA) in alleviating postoperative nausea and vomiting (PONV) during video-assisted thoracic surgery (VATS). 120 patients with lung carcinoma undergoing VATS were included and divided into three groups: group S (single TPVB+PCIA), group I (intermittent TPVB+PCIA), and group P (PCIA). The patients' NRS scores, postoperative hydromorphone hydrochloride consumption, and intramuscular injection of bucinnazine hydrochloride were recorded. The incidence of PONV and complications were documented. Compared with the group P, both group I and group S had significantly lower static NRS scores from 1-48 hours after the operation (P <0.05), and the dynamic NRS score of group I at the 1-48 hours after the operation were significantly decreased (P <0.05). Compared with the group P, the proportion of patients with PONV in group I was significantly lower (P <0.05), while there was no significant difference in group S. Moreover, the hospitalization period of patients in group I was significantly reduced compared with the other two groups (P <0.01), and the patient satisfaction was significantly increased compared with the group P (P <0.05). Intermittent TPVB combined with PCIA can reduce the postoperative pain and the occurrence of PONV.

Incidence of nausea/vomiting following propofol sedation with adaptive servo-ventilation for atrial fibrillation ablation.

Postoperative nausea and vomiting (PONV) following atrial fibrillation (AF) ablation can cause considerable distress. Continuous intravenous propofol sedation with adaptive servo-ventilation (ASV) with or without an analgesic, pentazocine, during AF ablation was studied in 272 consecutive patients with paroxysmal, persistent, and long-standing persistent AF. The study objectives were to determine the incidence of PONV after AF ablation and to assess the predictive value of factors for PONV using the area under the receiver operating characteristic curve (AUC). The present sedation maneuver was successfully accomplished with a low incidence of hypotension and without discontinuation of ablation or switching to general anesthesia, while maintaining an acceptable procedural time (102 ± 32 min). The incidence of PONV was 5.5% (15/272). Nausea occurred in nine patients after an average of 4.6 ± 3.5 h (range: 2-12 h) postablation, and vomiting with nausea occurred in six patients after an average of 4.5 ± 3.1 h (range: 1-9 h) postablation. The postablation interval did not differ significantly between the occurrence of nausea and nausea accompanied by vomiting. AUCs based on various factors, including the Apfel score, ranged from 0.55 to 0.67, indicating low accuracy in predicting PONV occurrence. The incidence of PONV after propofol sedation with ASV was the lowest (5.5%) reported to date. Scoring systems, which included the Apfel score, were ineffective in predicting PONV. The low PONV incidence in addition to the efficacy of propofol sedation with ASV revealed the adequacy of this regimen for AF ablation.

Prevalence and Factors Associated with Postoperative Nausea and Vomiting in an Ethiopian Comprehensive Specialized Hospital.

Postoperative nausea and vomiting (PONV) is a common and uncomfortable anesthetic and surgical consequences. It may cause severe distress to the patient and may cause the recovery process to be delayed. Identifying the reasons may aid in reducing the magnitude and problems. The purpose of this study was to determine the prevalence and risk factors for PONV after general anesthesia in an Ethiopian hospital. From March 1 to May 30, 2019, a cross-sectional study was designed. A patient interview was used to obtain data on the occurrence of PONV, and a chart review was used to collect data on other demographic and clinical variables. To identify associated factors, variables with a P-value of 0.2 in binary logistic regression were transformed into a multivariable logistic regression. The strength of the association and level of significance waswere demonstrated using crude and adjusted odds ratios with 95% confidence intervals and P-values of 0.05. The study included 162 participants, with a remarkable 100% response rate. Within 24 hr after surgery, 51.2% of patients had nausea and vomiting. When compared to their counterparts, female patients, patients who received perioperative opioid medication, patients with a history of PONV, and patients with a history of motion sickness reported a statistically significant difference (higher incidence) in PONV. This study only comprised ASA physical classes 1 and 2 patients who did not receive preventive antiemetics. In the research area, the total prevalence of vomiting and nausea was 51.2%. Female sex, perioperative opioid usage, a history of nausea and vomiting, and a history of motion sickness were discovered to be statistically significantly associated with a higher incidence of PONV.

The Correlation Between Pre-Operative Fasting Duration and Post-Operative Nausea and Vomiting Occurrence on Patients with General Anestehesia

Background: Preoperative fasting is a procedural measure implemented before surgery or anesthesia to avert regurgitation or vomiting. PONV incidence is influenced by surgical, anesthetic, and patient-related factors. The purpose of the study is to ascertain the duration of preoperative fasting observed by participants and the prevalence of PONV according to personality traits. Purpose: Determine the correlation between the duration of preoperative fasting and the occurrence of PONV in patients undergoing general anesthesia at RSUD Dr. Soekardjo Tasikmalaya. Methods: Observatory, descriptive, and cross-sectional designs are utilized. The sampling method was with sixty respondents ranging in age from seventeen to forty-five years, ASA I to II. Data is collected via observation and evaluation. Findings: The study observed that among 37 individuals (61.7%), preoperative fasting for 6-8 hours was beneficial, while for 23 individuals (38.3%), fasting for &gt;8 hours were detrimental. At the age of 17-25 years, 10 individuals (47.6%) develop PONV, while 11 individuals (52.4%) do so between the ages of 26-45. Among women, 17 individuals (81.0%) have PONV, while 20 individuals (95.2%) have ASA I physical status, and 1 individual (4.8%) has ASA II physical status. Conclusion: There is a significant link (p &lt; 0.013) between preoperative fasting time and postoperative nausea and vomiting (PONV) in patients under general anesthesia. Fasting before surgery should be long enough to avoid PONV

Opioid-free anaesthesia reduces postoperative nausea and vomiting after thoracoscopic lung resection: a randomised controlled trial

BackgroundIntraoperative opioid use has a positive relationship with postoperative nausea and vomiting (PONV), and opioid-free anaesthesia (OFA) may reduce PONV. We investigated whether OFA compared with opioid-based anaesthesia would reduce PONV during the first 2 postoperative days among patients undergoing thoracoscopic lung resection. MethodsIn this randomised controlled trial, 120 adult patients were randomly assigned (1:1, stratified by sex) to receive either OFA with esketamine, dexmedetomidine, and sevoflurane, or opioid-based anaesthesia with sufentanil and sevoflurane. A surgical pleth index (SPI) of 20–50 was applied for intraoperative analgesia provision. All patients received PONV prophylaxis (dexamethasone and ondansetron) and multimodal analgesia (flurbiprofen axetil, ropivacaine wound infiltration, and patient-controlled sufentanil). The primary outcome was the occurrence of PONV during the first 48 h after surgery. ResultsThe median age was 53 yr old and 66.7% were female. Compared with opioid-based anaesthesia, OFA significantly reduced the incidence of PONV (15% vs 31.7%; odds ratio [OR]=0.38, 95% confidence interval [CI], 0.16–0.91; number needed to treat, 6; P=0.031). Secondary and safety outcomes were comparable between groups, except that OFA led to a lower rate of vomiting (OR=0.23, 95% CI, 0.08–0.77) and a longer length of PACU stay (median difference=15.5 min, 95% CI, 10–20 min). The effects of OFA on PONV did not differ in the prespecified subgroups of sex, smoking status, and PONV risk scores. ConclusionsIn the context of PONV prophylaxis and multimodal analgesia, SPI-guided OFA administration halved the incidence of PONV after thoracoscopic lung resection, although it was associated with a longer stay in the PACU. Clinical trial registrationChinese Clinical Trial Registry (ChiCTR2200059710).

Preoperative Femoral Nerve Block and Postoperative Sciatic Nerve Block at the Subgluteal Space After Total Knee Arthroplasty: A Retrospective Cohort Study.

Background A preoperative sciatic nerve block (SNB) before total knee arthroplasty (TKA) frequently causes postoperative drop foot; however, this can also occur as an unintended result of surgical invasion. This study assessed the benefits of a postoperative SNB at the subgluteal space for patients who underwent TKA. Methodology This was a single-center, retrospective cohort study. Patients who underwent TKA under general anesthesia between May 2018 and June 2019 at the Teikyo University School of Medicine were screened for inclusion. They received either a preoperative femoral nerve block alone (control group; n = 87) or a preoperative femoral nerve block and postoperative SNB at the subgluteal space (post-SNB group; n = 40). The primary outcome was the pain-related Numerical Rating Scale (NRS) scores. The secondary outcomes were postoperative nausea and vomiting (PONV), intravenous patient-controlled analgesia (iv-PCA) suspension, and postoperative complications. Results No significant differences were observed in the characteristics, NRS scores, time to first drug use for pain, and iv-PCA suspension between groups. However, the incidence of PONV was significantly lower in the post-SNB group (p = 0.03). Logistic regression analysis revealed that droperidol doses of iv-PCA and the presence of postoperative SNB were independently associated with PONV occurrence [A1]{(p = 0.008, 95% confidence intervals (CI) [0.46, 0.89] and (p = 0.02, 95% CI [0.25, 0.88])}. Conclusions A postoperative SNB at the subgluteal space following TKA does not improve postoperative pain control; however, it may have contributed to reduced PONV.

Is Postoperative Pain Associated With Nausea and Vomiting Following Orthognathic Surgery?

Postoperative nausea and vomiting (PONV) is a common adverse side-effect following orthognathic surgery, with pain potentially contributing as a risk factor. The study's purpose was to measure the association between postoperative pain and PONV. This prospective cohort study involved patients who underwent bimaxillary surgery at Erciyes University, Oral and Maxillofacial Surgery Hospital. Patients with a history of routine antiemetic use, pregnancy, breastfeeding, morbid obesity, cardiac dysrhythmia, mental retardation, or psychiatric illness were excluded. The predictor variable was postoperative pain, which was measured using a 100-mm visual analogue scale (VAS). VAS scores were documented at the 30-minute postoperative mark (referred to as VAS1), and the mean of hourly VAS scores over the initial three postoperative hours (denoted as VAS2). The primary outcome was the occurrence of PONV, defined as active vomiting, retching, or nausea leading to vomiting. The secondary outcome was the timing of PONV, categorized as early (within 6hours), late (6-24hours), and delayed (beyond 24hours postoperatively). The study's covariates were age, sex, body mass index, Apfel risk scores, surgery duration, history of PONV or motion sickness, and smoking status. Descriptive statistics and χ2 tests were used for data analysis, with statistical significance set at P value < .05. The sample was composed of 86 subjects with a median age of 20years (range: 18-30years), of which 37.2% were male. The frequency of PONV was 50%. Postoperative pain, as measured by VAS scores, was significantly higher in the PONV group compared to the non-PONV group. The median VAS1 score was 60.0 (PONV group, range 40-90) versus 50.0 (non-PONV, range 0-90) (P=.041); for VAS2, it was 60.0 (PONV, range 40-80) compared to 40.0 (non-PONV, range 30-60) (P<.001). The frequency of PONV observed in patients undergoing bimaxillary surgery is substantial, necessitating the identification and management of risk factors to enhance perioperative care and patient outcomes. By improving PONV management and addressing postoperative pain, health-care providers can enhance the perioperative experience and patient outcomes in bimaxillary surgery.

POSTOPERATIVE NAUSEA AND VOMITING: RETROSPECTIVE COMPARATIVE STATISTICAL STUDY

Postoperative nausea and vomiting (PONV) is a relatively frequent side effect during the first 24 hours following surgery and a major source of discomfort for patients. These are transient symptoms, which can worsen the functional prognosis, but also vital following the occurrence of serious complications. Our objective was to determine the real incidence of PONV in patients operated in our facility, to analyze the different risk factors found in the literature and to evaluate the relevance of our preventive and therapeutic strategies in this matter. We included 92 patients operated from September 23, 2021 to December 09, 2021 in a prospective observational study conducted in the different surgical departments (gynecology, visceral surgery, ear nose and throat department , traumatology) at the Mohamed V provincial hospital of Sefrou. The overall incidence of PONV was 47%. It was 23% at 6 hours and 24% at 24 hours. The incidence of nausea, vomiting, and nausea and vomiting was 17%, 11%, and 19%, respectively. Risk factors associated with the occurrence of PONV were : age (p=0.049), duration of surgery (p&lt;0.01) and type of anesthesia (p=0.043). A preventive strategy with metoclopramide 10mg injectable at induction was followed in only 18% of cases, but was not effective on the occurrence of PONV. Indeed, it was noted that our practitioners had little interest or awareness of an appropriate preventive and curative protocol or strategy. We recommend the development of an antiemetic prophylaxis and the use of a preventive and therapeutic protocol for postoperative nausea and vomiting. For this, our work proposed at the end a practical brochure adapted to our context and which would be applicable in any national hospital structure.

Prevalence, Risk Factors, and Management of Postoperative Nausea and Vomiting After Laparoscopic Sleeve Gastrectomy (a Retrospective Multicentric Study).

Postoperative nausea and vomiting (PONV) is a frequent unappealing laparoscopic sleeve gastrectomy (LSG) sequel. The study's purpose was to determine the prevalence, risk factors of PONV, and management of PONV after LSG. This multicenter retrospective study included patients with morbid obesity who had LSG between January 2022 and April 2023. The age range for LSG was 16 to 65years, and the eligibility requirements included morbid obesity according to international guidelines. PONV was experienced by 74.6% of patients who underwent LSG at 6h postoperative. Multivariate analysis revealed that female gender, smokers, preoperative GERD, gastropexy, and severity of pain were found to be independent risk variables of the development of PONV, while antral preservation, opioid-free analgesia, and intraoperative combined analgesia were found to be independent protective variables against the development of PONV. Combined intravenous ondansetron and metoclopramide improved 92.6% of patients who developed PONV. Dexamethasone and antihistamines drugs are given for 42 cases with persistent PONV after using intravenous ondansetron and metoclopramide. Pain management postoperatively by opioid-free analgesia managed PONV. Helicobacter pylori status has no role in the development of PONV after LSG. Female gender, smoking, presence of preoperative GERD, gastropexy, and severity of pain were found to be independent risk variables of the development of PONV, while antral preservation, opioid-free analgesia, and intraoperative combined analgesia were observed to be independent protective factors against the occurrence of PONV. Combined intravenous ondansetron and metoclopramide improved PONV. Dexamethasone and antihistamines drugs are given for persistent PONV.

Effect of dexmedetomidine on postoperative nausea and vomiting in patients under general anaesthesia: an updated meta-analysis of randomised controlled trials

ObjectivesTo explore the effect of dexmedetomidine (DEX) on postoperative nausea and vomiting (PONV) in adult patients after general anaesthesia.DesignSystematic review and meta-analysis.Eligibility criteria for selecting studiesRandomised controlled trials (RCTs) comparing...