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Brazilian Journal of Anesthesiology... 2022The effect of mild changes in CO levels to organ perfusion and tissue inflammation are well known, whereas an influence of hypercapnia under general anesthesia on... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
The effect of mild changes in CO levels to organ perfusion and tissue inflammation are well known, whereas an influence of hypercapnia under general anesthesia on adverse events as nausea and vomiting, or length of hospital stay is barely examined. The goal of our meta-analysis was to identify possibly positive effects of hypercapnia versus normocapnia in general anesthesia in adult patients.
METHODS
We conducted a systematic review of parallel-arm randomised controlled trials comparing hypercapnia versus normocapnia in adult patients undergoing general anesthesia. In July 2018 and September 2019 we searched "CENTRAL‿, "MEDLINE‿, and "Embase‿, checked reference lists of all included studies and relevant systematic reviews for additional references to trials. Two review authors independently assessed trials for inclusion, extracted data, and completed a "Risk of bias‿ assessment for all included studies.
RESULTS
Our search identified 297 records after abstract screening 30 full-text papers remained for further examination. Ten publications met our inclusion criteria and were used for narrative description of this systematic review. Three studies were eligible for the meta-analysis normocapnia versus hypercapnia with the outcomes: time to extubation and adverse events. On average, time to extubation was significantly reduced in the hypercapnia group with a mean difference 3.78 (95% CI 0.85 to 6.71). No difference was found regarding adverse events.
CONCLUSIONS
The findings of our study do not enable us to produce evidence of a positive influence of increased CO partial pressure levels during general anesthesia. A well-planned, adequately powered randomized controlled trial would be desirable in the future.
Topics: Adult; Anesthesia, General; Carbon Dioxide; Humans; Hypercapnia
PubMed: 35644204
DOI: 10.1016/j.bjane.2020.11.010 -
BMC Anesthesiology Nov 2023The latest clinical trials have reported conflicting outcomes regarding the effectiveness of xenon anesthesia in preventing postoperative neurocognitive dysfunction;... (Meta-Analysis)
Meta-Analysis
The latest clinical trials have reported conflicting outcomes regarding the effectiveness of xenon anesthesia in preventing postoperative neurocognitive dysfunction; thus, this study assessed the existing evidence. We searched the PubMed, Embase, Cochrane Library, and Web of Science databases from inception to April 9, 2023, for randomized controlled trials of xenon anesthesia in postoperative patients. We included English-language randomized controlled studies of adult patients undergoing surgery with xenon anesthesia that compared its effects to those of other anesthetics. Duplicate studies, pediatric studies, and ongoing clinical trials were excluded. Nine studies with 754 participants were identified. A forest plot revealed that the incidence of postoperative neurocognitive dysfunction did not differ between the xenon anesthesia and control groups (P = 0.43). Additionally, xenon anesthesia significantly shortened the emergence time for time to opening eyes (P < 0.001), time to extubation (P < 0.001), time to react on demand (P = 0.01), and time to time and spatial orientation (P = 0.04). However, the Aldrete score significantly increased with xenon anesthesia (P = 0.005). Postoperative complications did not differ between the anesthesia groups. Egger's test for bias showed no small-study effect, and a trim-and-fill analysis showed no apparent publication bias. In conclusion, xenon anesthesia probably did not affect the occurrence of postoperative neurocognitive dysfunction. However, xenon anesthesia may effectively shorten the emergence time of certain parameters without adverse effects.
Topics: Adult; Humans; Child; Xenon; Postoperative Period; Anesthetics; Anesthesia, Inhalation; Delirium
PubMed: 37946114
DOI: 10.1186/s12871-023-02316-5 -
Gynecologic and Obstetric Investigation 2022In the last years, spinal anesthesia (SA) has been emerging as an alternative to general anesthesia (GA) for the laparoscopic treatment of gynecological diseases, for... (Meta-Analysis)
Meta-Analysis
INTRODUCTION
In the last years, spinal anesthesia (SA) has been emerging as an alternative to general anesthesia (GA) for the laparoscopic treatment of gynecological diseases, for better control of postoperative pain. The aim of the review is to compare the advantages of SA compared to GA.
METHODS
MEDLINE, Scopus, ClinicalTrials.gov, EMBASE, Cochrane Library, and CINAHL were searched from inception until March 2021. Randomized controlled trials (RCTs) and non-randomized studies (NRSs) about women underwent SA and GA for gynecological laparoscopic surgery were analyzed. Relevant data were extracted and tabulated.
RESULTS
The primary outcomes included the evaluation of postoperative pain (described as shoulder pain), postoperative nausea and vomiting, and operative times. One hundred and eight patients were included in RCTs, 58 in NRSs. The qualitative analysis had conflicting results and for the most of parameters (hemodynamic variables, nausea, and postoperative analgesic administration) no statistically significant differences were observed: in the NRSs, contradictory results regarding the postoperative pain in SA and GA groups were reported. Regarding the quantitative analysis, in the RCTs, women who received SA had not significantly lower operative times (relative risk [RR] -4.40, 95% confidence interval [CI] -9.32-0.53) and a lower incidence of vomiting (RR 0.51, 95% CI 0.17-1.55); on the other hand, in the NRS, women who received SA had longer operative times (RR 5.05, 95% CI -0.03-10.14) and more episodes of vomiting (RR 0.56, 95% CI 0.10-2.97) compared to those with GA: anyway, the outcomes proved to be insignificant.
CONCLUSIONS
Current evidence suggests no significant advantages to using SA over GA for laparoscopic treatment of gynecological diseases.
Topics: Anesthesia, General; Anesthesia, Spinal; Female; Humans; Laparoscopy; Pain, Postoperative; Postoperative Nausea and Vomiting
PubMed: 34915508
DOI: 10.1159/000521364 -
BMC Anesthesiology Jul 2023Dexmedetomidine is a medication that has analgesic, sedative, and anti-anxiety properties. In the clinical, it is often used to prevent common complications associated... (Meta-Analysis)
Meta-Analysis
OBJECTIVE
Dexmedetomidine is a medication that has analgesic, sedative, and anti-anxiety properties. In the clinical, it is often used to prevent common complications associated with strabismus surgery, including postoperative delirium, postoperative nausea and vomiting, postoperative pain, and oculocardiac reflex. However, its effectiveness and side effects of the present studies are different. The sample sizes of the present studies on the prevention of complications of dexmedetomidine are small. Therefore, this study evaluates the efficacy of dexmedetomidine in preventing anesthesia-related complications in strabismus surgery through a systematic review and meta-analysis.
METHODS
Literature was retrieved from 10 commonly used databases and randomized controlled trials published up to May 2022 were sought. The included studies compared the intervention effects of dexmedetomidine versus placebo on anesthesia-related complications in surgery. The occurrence rates of postoperative delirium, postoperative nausea and vomiting, postoperative pain, and oculocardiac reflex in patients undergoing strabismus surgery were evaluated. Statistical analyses and forest plots were generated using Review Manager and STATA software. Binary outcomes were measured using relative risk (RR) with a 95% confidence interval for each outcome. The Cochrane risk of bias tool was used to assess the bias and risk in the studies that met the inclusion criteria.
RESULTS
A total of 13 articles were ultimately included in the analysis, comprising 1,018 patients who underwent strabismus surgery. The dexmedetomidine group, compared to the placebo group, demonstrated significant reductions in the incidence of postoperative delirium (RR = 0.73, P = 0.001), severe postoperative delirium (RR = 0.45, P = 0.005), postoperative nausea and vomiting (RR = 0.48, P < 0.0001), and the need for supplemental analgesia postoperatively (RR = 0.60, P = 0.004). Additionally, subgroup analysis revealed that intravenous administration of dexmedetomidine significantly reduced the incidence of oculocardiac reflex (RR = 0.50, P = 0.001). In contrast, intranasal administration of dexmedetomidine did not have a significant effect on the incidence of oculocardiac reflex (RR = 1.22, P = 0.15). There was a significant difference between the subgroups (P = 0.0005, I2 = 91.7%).
CONCLUSION
Among patients undergoing strabismus surgery, the use of dexmedetomidine can alleviate postoperative delirium and reduce the incidence of postoperative nausea and vomiting, as well as postoperative pain. Moreover, intravenous administration of dexmedetomidine can lower the occurrence rate of the oculocardiac reflex.
Topics: Humans; Postoperative Nausea and Vomiting; Dexmedetomidine; Emergence Delirium; Pain, Postoperative; Strabismus; Anesthesia
PubMed: 37491215
DOI: 10.1186/s12871-023-02215-9 -
Annals of Palliative Medicine Nov 2021Several studies have evaluated the association between thermal insulation (TI) and control after surgery, with various research designs, recruitment and exclusion... (Meta-Analysis)
Meta-Analysis
BACKGROUND
Several studies have evaluated the association between thermal insulation (TI) and control after surgery, with various research designs, recruitment and exclusion criteria, and measurements. The current meta-analysis aimed to assess the correlation between TI and stroke during recovery from anesthesia.
METHODS
We searched for full-text articles of us of TI during anesthesia recovery in multiple databases including PubMed, Springer, EMBASE and Chinese journal full-text databases. Two reviewers read each article and extracted the relevant data of into a Microsoft Excel table: name of the first author, publication year, year of onset, sample size (TI/control group), patient age range, and other information related to TI patients and control group. The meta-analysis, sensitivity analysis and bias analysis were performed using Review Manager 5.0.
RESULTS
A total of 723 patients from 7 studies met the eligibility criteria and were included in the final analysis. The meta-analysis showed that the recovery time after anesthesia in the TI group was significantly different from that in the control group [mean difference (MD) =-7.02, 95% confidence interval (CI): -10.10 to -3.95, P<0.00001; P for heterogeneity <0.00001, I2=99%], length of stay in Postanesthesia Care Unit (PACU) score [MD =-20.78, 95% CI: -31.32 to -10.24, P=0.0001; P for heterogeneity <0.00001, I2=92%] and shivering rate [relative risk (RR) =0.25, 95% CI: 0.08 to 0.77, P=0.02; P for heterogeneity =0.07, I2=71%].
DISCUSSION
TI is an important measure during recovery from anesthesia.
Topics: Anesthesia; Body Temperature; Humans; Postoperative Care
PubMed: 34872265
DOI: 10.21037/apm-21-2716 -
Frontiers in Medicine 2023Patients often experience shivering after spinal anesthesia. In recent years, more and more studies have compared the efficacy and side effects of intravenous... (Review)
Review
BACKGROUND
Patients often experience shivering after spinal anesthesia. In recent years, more and more studies have compared the efficacy and side effects of intravenous butorphanol and tramadol in the treatment of shivering after spinal anesthesia. Therefore, we conducted a MATE analysis and systematic review to compare the efficacy and side effects of butorphanol vs. tramadol in the treatment of shivering after spinal anesthesia.
METHODS
PubMed, Cochrane Library, and Embase databases were searched for randomized controlled trials (RCTs) from inception to 30 December 2022, comparing the effects of butorphanol vs. tramadol for the control of shivering after spinal anesthesia. Data assessment and collection were analyzed using the Review Manager 5.4 software.
RESULTS
Five randomized controlled trials involving 302 adult patients were included in this meta-analysis. The results showed that butorphanol has a shorter time to cease shivering (standardized mean difference (SMD) = -0.53; 95% confidence interval (CI) [-0.89, -0.17], = 0.004, = 0%), a higher rate of cessation of shivering within 1 min after administering the study drugs (relative risk (RR), 1.69; 95% CI [1.15,2.48], = 0.008, = 0%), and higher incidences of sedation (RR, 2.98; 95% CI [2.11, 4.21], <0.00001, = 0%), compared with tramadol.
CONCLUSION
In the treatment of shivering after spinal anesthesia, butorphanol has a shorter onset time and a higher rate of cessation of shivering within 1 min after the study drugs were administered than tramadol. Therefore, butorphanol is superior to tramadol in the treatment of shivering after spinal anesthesia.
PubMed: 38116041
DOI: 10.3389/fmed.2023.1271664 -
BMC Anesthesiology Jul 2023Evidence-based effect of anesthetic regimens on postoperative delirium (POD) incidence after hip fracture surgery is still debated. Randomized trials have reported... (Meta-Analysis)
Meta-Analysis
Neuraxial versus general anesthesia in elderly patients undergoing hip fracture surgery and the incidence of postoperative delirium: a systematic review and stratified meta-analysis.
BACKGROUND
Evidence-based effect of anesthetic regimens on postoperative delirium (POD) incidence after hip fracture surgery is still debated. Randomized trials have reported inconsistent contradictory results largely attributed to small sample size, use of outdated drugs and techniques, and inconsistent definitions of adverse outcomes. The primary objective of this meta-analysis was to investigate the impact of different anesthesia regimens on POD, cognitive impairment, and associated complications including mortality, duration of hospital stay, and rehabilitation capacity.
METHODS
We identified randomized controlled trials (RCTs) published from 2000 to December 2021, in English and non-English language, comparing the effect of neuraxial anesthesia (NA) versus general anesthesia (GA) in elderly patients undergoing hip fracture surgery, from PubMed, EMBASE, Google Scholar, Web of Science and the Cochrane Library database. They were included if POD incidence, cognitive impairment, mortality, duration of hospital stay, or rehabilitation capacity were reported as at least one of the outcomes. Study protocols, case reports, audits, editorials, commentaries, conference reports, and abstracts were excluded. Two investigators (KYC and TXY) independently screened studies for inclusion and performed data extraction. The risk of bias was assessed using the Cochrane Collaboration risk-of-bias tool. The quality of the evidence for each outcome according to the GRADE working group criteria. The odds ratio (OR) and 95% confidence intervals (CI) were calculated to assess the pooled data.
RESULTS
A total of 10 RCTs with 3968 patients were included in the present analysis. No significant differences were found in the incidence of POD comparing NA vs GA [OR 1.10, 95% CI (0.89 to 1.37)], with or without including patients with a pre-existing condition of dementia or delirium, POD incidence from postoperative day 2-7 [OR 0.31, 95% CI (0.06 to -1.63)], in mini-mental state examination (MMSE) score [OR 0.07, 95% CI (-0.22 to 0.36)], or other neuropsychological test results. NA appeared to have a shorter duration of hospital stay, especially in patients without pre-existing dementia or delirium, however the observed effect did not reach statistical significance [OR -0.23, 95% CI (-0.46 to 0.01)]. There was no difference in other outcomes, including postoperative pain control, discharge to same preadmission residence [OR 1.05, 95% CI (0.85 to 1.31)], in-hospital mortality [OR 1.98, 95% CI (0.20 to 19.25)], 30-day [OR 1.03, 95% CI (0.47 to 2.25)] or 90-day mortality [OR 1.08, 95% CI (0.53-2.24)].
CONCLUSIONS
No significant differences were detected in incidence of POD, nor in other delirium-related outcomes between NA and GA groups and in subgroup analyses. NA appeared to be associated with a shorter hospital stay, especially in patients without pre-existing dementia, but the observed effect did not reach statistical significance. Further larger prospective randomized trials investigating POD incidence and its duration and addressing long-term clinical outcomes are indicated to rule out important differences between different methods of anesthesia for hip surgery.
TRIAL REGISTRATION
10.17605/OSF.IO/3DJ6C.
Topics: Aged; Humans; Emergence Delirium; Incidence; Hip Fractures; Anesthesia, General; Dementia
PubMed: 37481517
DOI: 10.1186/s12871-023-02196-9 -
British Journal of Anaesthesia Dec 2023Many RCTs have evaluated the influence of intraoperative tidal volume (tV), PEEP, and driving pressure on the occurrence of postoperative pulmonary complications,... (Meta-Analysis)
Meta-Analysis Review
Impact of ventilation strategies on pulmonary and cardiovascular complications in patients undergoing general anaesthesia for elective surgery: a systematic review and meta-analysis.
BACKGROUND
Many RCTs have evaluated the influence of intraoperative tidal volume (tV), PEEP, and driving pressure on the occurrence of postoperative pulmonary complications, cardiovascular complications, and mortality in adult patients. Our meta-analysis aimed to investigate the association between tV, PEEP, and driving pressure and the above-mentioned outcomes.
METHODS
We conducted a systematic review and meta-analysis of RCTs from inception to May 19, 2022. The primary outcome was the incidence of postoperative pulmonary complications; the secondary outcomes were intraoperative cardiovascular complications and 30-day mortality. Primary and secondary outcomes were evaluated stratifying patients in the following groups: (1) low tV (LV, tV 6-8 ml kg and PEEP ≥5 cm HO) vs high tV (HV, tV >8 ml kg and PEEP=0 cm HO); (2) higher PEEP (HP, ≥6 cm HO) vs lower PEEP (LP, <6 cm HO); and (3) driving pressure-guided PEEP (DP) vs fixed PEEP (FP).
RESULTS
We included 16 RCTs with a total sample size of 4993. The incidence of postoperative pulmonary complications was lower in patients treated with LV than with HV (OR=0.402, CI 0.280-0.577, P<0.001) and lower in DP than in FP group (OR=0.358, CI 0.187-0.684, P=0.002). Postoperative pulmonary complications did not differ between HP and LP groups; the incidence of intraoperative cardiovascular complications was higher in HP group (OR=1.385, CI 1.027-1.867, P=0.002). The 30-day mortality was not influenced by the ventilation strategy.
CONCLUSIONS
Optimal intraoperative mechanical ventilation is unclear; however, our meta-analysis showed that low tidal volume and driving pressure-guided PEEP strategies were associated with a reduction in postoperative pulmonary complications.
Topics: Adult; Humans; Respiration, Artificial; Positive-Pressure Respiration; Elective Surgical Procedures; Postoperative Complications; Tidal Volume; Anesthesia, General
PubMed: 37839932
DOI: 10.1016/j.bja.2023.09.011 -
BMC Anesthesiology Jan 2021Scientometrics is used to assess the impact of research in several health fields, including Anesthesia and Critical Care Medicine. The purpose of this study was to...
BACKGROUND
Scientometrics is used to assess the impact of research in several health fields, including Anesthesia and Critical Care Medicine. The purpose of this study was to identify contributors to highly-cited African Anesthesia and Critical Care Medicine research.
METHODS
The authors searched Web of Science from inception to May 4, 2020, for articles on and about Anesthesia and Critical Care Medicine in Africa with ≥2 citations. Quantitative (H-index) and qualitative (descriptive analysis of yearly publications and interpretation of document, co-authorship, author country, and keyword) bibliometric analyses were done.
RESULTS
The search strategy returned 116 articles with a median of 5 (IQR: 3-12) citations on Web of Science. Articles were published in Anesthesia and Analgesia (18, 15.5%), World Journal of Surgery (13, 11.2%), and South African Medical Journal (8, 6.9%). Most (74, 63.8%) articles were published on or after 2013. Seven authors had more than 1 article in the top 116 articles: Epiu I (3, 2.6%), Elobu AE (2, 1.7%), Fenton PM (2, 1.7%), Kibwana S (2, 1.7%), Rukewe A (2, 1.7%), Sama HD (2, 1.7%), and Zoumenou E (2, 1.7%). The bibliometric coupling analysis of documents highlighted 10 clusters, with the most significant nodes being Biccard BM, 2018; Baker T, 2013; Llewellyn RL, 2009; Nigussie S, 2014; and Aziato L, 2015. Dubowitz G (5) and Ozgediz D (4) had the highest H-indices among the authors referenced by the most-cited African Anesthesia and Critical Care Medicine articles. The U.S.A., England, and Uganda had the strongest collaboration links among the articles, and most articles focused on perioperative care.
CONCLUSION
This study highlighted trends in top-cited African articles and African and non-African academic institutions' contributions to these articles.
Topics: Africa; Anesthesia; Anesthesiology; Bibliometrics; Critical Care; Humans
PubMed: 33478391
DOI: 10.1186/s12871-021-01246-4 -
Journal of the American Dental... Jan 2023Local anesthesia is essential for pain control in dentistry. The authors assessed the comparative effect of local anesthetics on acute dental pain after tooth extraction... (Review)
Review
BACKGROUND
Local anesthesia is essential for pain control in dentistry. The authors assessed the comparative effect of local anesthetics on acute dental pain after tooth extraction and in patients with symptomatic irreversible pulpitis.
TYPES OF STUDIES REVIEWED
The authors searched MEDLINE, EMBASE, Cochrane Central Register of Controlled Trials, and the US Clinical Trials registry through November 21, 2020. The authors included randomized controlled trials (RCTs) comparing long- vs short-acting injectable anesthetics to reduce pain after tooth extraction (systematic review 1) and evaluated the effect of topical anesthetics in patients with symptomatic pulpitis (systematic review 2). Pairs of reviewers screened articles, abstracted data, and assessed risk of bias using a modified version of the Cochrane risk of bias 2.0 tool. The authors assessed the certainty of the evidence using the Grading of Recommendations Assessment, Development and Evaluation approach.
RESULTS
Fourteen RCTs comparing long- vs short-acting local anesthetics suggest that bupivacaine may decrease the use of rescue analgesia and may not result in additional adverse effects (low certainty evidence). Bupivacaine probably reduces the amount of analgesic consumption compared with lidocaine with epinephrine (mean difference, -1.91 doses; 95% CI, -3.35 to -0.46; moderate certainty) and mepivacaine (mean difference, -1.58 doses; 95% CI, -2.21 to -0.95; moderate certainty). Five RCTs suggest that both benzocaine 10% and 20% may increase the number of people experiencing pain reduction compared with placebo when managing acute irreversible pulpitis (low certainty).
PRACTICAL IMPLICATIONS
Bupivacaine may be superior to lidocaine with epinephrine and mepivacaine with regard to time to and amount of analgesic consumption. Benzocaine may be superior to placebo in reducing pain for 20 through 30 minutes after application.
Topics: Humans; Acute Pain; Anesthesia, Local; Anesthetics, Local; Benzocaine; Bupivacaine; Epinephrine; Lidocaine; Mepivacaine; Pulpitis
PubMed: 36608963
DOI: 10.1016/j.adaj.2022.10.014