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Cureus Dec 2023Since the 1940s, Macintosh laryngoscopy (Mac laryngoscopy) has been the gold standard for tracheal intubation, offering visualization of the glottis entrance. However,... (Review)
Review
Systematic Review and Meta-Analysis of Randomized Controlled Trials (RCTs) Revealing the Future of Airway Management: Video Laryngoscopy vs. Macintosh Laryngoscopy for Enhanced Clinical Outcomes.
Since the 1940s, Macintosh laryngoscopy (Mac laryngoscopy) has been the gold standard for tracheal intubation, offering visualization of the glottis entrance. However, recent years have witnessed the emergence of various video laryngoscopy (VL) techniques. This systematic review and meta-analysis aims to assess the clinical outcomes of VL Mac laryngoscopy in an elective setting. We comprehensively searched five medical databases - PubMed, EMBASE, Medline, Cochrane Library, and Web of Science. All the databases were last searched in January 2023. We only included studies with full texts comparing VL to Mac laryngoscopy clinical outcomes. Studies were excluded if they were non-full text or non-randomized controlled trials (RCTs) and did not compare VL to Mac laryngoscopy. We extracted data comprising author names, publication year, key study outcomes (first-attempt intubation success rate, Cormack and Lehane grade, hypoxia incidence, and glottis view quality), video laryngoscope types, and sample sizes of both VL and Mac laryngoscopy groups. The Cochrane risk of bias tool was used to assess the risk of bias in the included studies. Statistical analysis was performed using Review Manager (RevMan, version 5.4; Cochrane Collaboration, London, UK), presenting results as odds ratio (OR) and risk ratios (RR) at a 95% confidence interval (CI). This facilitated the identification of relevant and appropriate studies of our analysis. The search produced 19 studies that were included in this review. The evaluated sample size ranges from 40 to 802, with 3,238 participants. The rate of success at the first attempt in the use of VL was 1,558/1,890 (82.43%), while the success rate for Mac laryngoscopy was 982/1,348 (72.85%; OR: 1.98 (1.25, 3.12)) at a 95% confidence interval. Pooled analysis indicated no significant difference for hypoxia concerning the type of device used RR (random effects: 1.02; 95% CI: 0.80-1.29). A video laryngoscope had a higher likelihood of visualizing the vocal cords categorized as category 1 in the Cormack-Lehane system of classification (RR: 2.45; 95% CI: 1.43-4.21). Additionally, considerably better glottis views were attained during VL than Mac laryngoscopy (OR: 1.77; 95% CI: 1.19-2.62). In elective tracheal intubation, VL demonstrates superior first-attempt success rates, offers improved glottis visualization, and reduces instances where the glottis cannot be viewed compared to Mac laryngoscopy.
PubMed: 38229823
DOI: 10.7759/cureus.50648 -
Otolaryngology--head and Neck Surgery :... Mar 2024To review the current literature about epidemiology, etiologies and surgical management of bilateral vocal fold paralysis (BVFP). (Review)
Review
OBJECTIVE
To review the current literature about epidemiology, etiologies and surgical management of bilateral vocal fold paralysis (BVFP).
DATA SOURCES
PubMED, Scopus, and Cochrane Library.
REVIEW METHODS
A systematic review of the literature on epidemiology, etiologies, and management of adult patients with BVFP was conducted through preferred reporting items for systematic reviews and meta-analyses statements by 2 investigators.
RESULTS
Of the 360 identified papers, 245 were screened, and of these 55 were considered for review. The majority (76.6%) of BVFP cases are iatrogenic. BVFP requires immediate tracheotomy in 36.2% of cases. Laterofixation of the vocal fold was described in 9 studies and is a cost-effective alternative procedure to tracheotomy while awaiting potential recovery. Unilateral and bilateral posterior transverse cordotomy outcomes were reported in 9 and 7 studies, respectively. Both approaches are associated with a 95.1% decannulation rate, adequate airway volume, but voice quality worsening. Unilateral/bilateral partial arytenoidectomy data were described in 4 studies, which reported lower decannulation rate (83%) and better voice quality outcome than cordotomy. Revision rates and complications vary across studies, with complications mainly involving edema, granuloma, fibrosis, and scarring. Selective posterior cricoarytenoid reinnervation is being performed by more surgeons and should be a promising addition to the BVFP surgical armamentarium.
CONCLUSION
Depending on techniques, the management of BVFP may be associated with several degrees of airway improvements while worsened or unchanged voice quality. The heterogeneity between studies, the lack of large-cohort controlled randomized studies and the confusion with posterior glottic stenosis limit the draw of clear conclusion about the superiority of some techniques over others.
Topics: Adult; Humans; Vocal Cords; Treatment Outcome; Vocal Cord Paralysis; Voice Quality; Tracheotomy
PubMed: 38123531
DOI: 10.1002/ohn.616 -
Italian Journal of Pediatrics Oct 2023Extubation failure (EF) is a significant concern in mechanically ventilated newborns, and predicting its occurrence is an ongoing area of research. To investigate the... (Meta-Analysis)
Meta-Analysis Review
Extubation failure (EF) is a significant concern in mechanically ventilated newborns, and predicting its occurrence is an ongoing area of research. To investigate the predictors of EF in newborns undergoing planned extubation, we conducted a systematic review and meta-analysis. A systematic literature search was conducted in PubMed, Web of Science, Embase, and Cochrane Library for studies published in English from the inception of each database to March 2023. The PRISMA guidelines were followed in all phases of this systematic review. The Risk of Bias Assessment for Nonrandomized Studies tool was used to assess methodological quality. Thirty-four studies were included, 10 of which were overall low risk of bias, 15 of moderate risk of bias, and 9 of high risk of bias. The studies reported 43 possible predictors in six broad categories (intrinsic factors; maternal factors; diseases and adverse conditions of the newborn; treatment of the newborn; characteristics before and after extubation; and clinical scores and composite indicators). Through a qualitative synthesis of 43 predictors and a quantitative meta-analysis of 19 factors, we identified five definite factors, eight possible factors, and 22 unclear factors related to EF. Definite factors included gestational age, sepsis, pre-extubation pH, pre-extubation FiO, and respiratory severity score. Possible factors included age at extubation, anemia, inotropic use, mean airway pressure, pre-extubation PCO, mechanical ventilation duration, Apgar score, and spontaneous breathing trial. With only a few high-quality studies currently available, well-designed and more extensive prospective studies investigating the predictors affecting EF are still needed. In the future, it will be important to explore the possibility of combining multiple predictors or assessment tools to enhance the accuracy of predicting extubation outcomes in clinical practice.
Topics: Infant, Newborn; Humans; Prospective Studies; Airway Extubation; Respiration, Artificial; Ventilator Weaning; Family
PubMed: 37784184
DOI: 10.1186/s13052-023-01538-0 -
Dysphagia Oct 2023Dysphagia in Robin Sequence can be present in varying degrees, requiring multidisciplinary management and specific swallowing assessment by a specialist. Most studies... (Meta-Analysis)
Meta-Analysis Review
Dysphagia in Robin Sequence can be present in varying degrees, requiring multidisciplinary management and specific swallowing assessment by a specialist. Most studies published to date have evaluated only respiratory outcomes, and the available evidence on the improvement of swallowing is questionable. To conduct a systematic review and meta-analysis of studies evaluating swallowing in children with Robin Sequence before and after airway clearance procedures. The research question was developed based on the PICO strategy. The literature search was performed in electronic databases and gray literature. Studies were selected by 3 independent reviewers. The risk of bias and level of evidence of the studies were assessed. A proportion meta-analysis was performed to calculate the prevalence of dysphagia after airway clearance procedures. The search identified 4938 studies, 5 of which were included. All studies had limitations in terms of design and sample size. The prevalence of dysphagia after airway clearance was obtained by analyzing treatment subgroups: mandibular distraction osteogenesis, mandibular distraction osteogenesis + tracheostomy tube, and nasopharyngeal tube. Clinical and/or instrumental assessment was assessed by a swallowing specialist. The meta-analysis was precluded by the limitations of the studies, especially regarding sample size, which affected the accuracy of the findings. Dysphagia remained unresolved in 55% of children (95% CI 1-99%). The methodological quality of the studies indicated a high risk of bias and very low level of evidence. It was not possible to confirm that airway clearance techniques used in Robin Sequence improve dysphagia.
Topics: Humans; Child; Infant; Treatment Outcome; Deglutition Disorders; Deglutition; Pierre Robin Syndrome; Osteogenesis, Distraction; Retrospective Studies
PubMed: 36763186
DOI: 10.1007/s00455-023-10561-6 -
Paediatric Anaesthesia Nov 2023Conventionally, tracheal tubes have been used for general anesthesia in pediatric laparoscopic surgeries. Recently, supraglottic devices are being used for the same. The... (Meta-Analysis)
Meta-Analysis Review
BACKGROUND
Conventionally, tracheal tubes have been used for general anesthesia in pediatric laparoscopic surgeries. Recently, supraglottic devices are being used for the same. The performance of supraglottic devices versus tracheal tubes in children undergoing laparoscopic surgery is uncertain.
METHODS
A systematic review and meta-analysis of randomized controlled trials that compared supraglottic devices versus tracheal tubes in patients ≤18 years undergoing laparoscopic surgery under general anesthesia was conducted. The outcomes were peak airway pressures (cm H O), end-tidal carbon dioxide during pneumoperitoneum (mm Hg), recovery time (min), postoperative sore throat and adverse events. Mean difference and odds ratio, with 95% confidence intervals were reported using a random effect model.
RESULTS
Eight trials (n = 591) were included in the final meta-analysis. There was no statistically significant difference in the peak airway pressures (MD 0.58, 95% CI: -0.65 to 1.8; p = .36) and end-tidal carbon dioxide (MD -0.60, 95% CI: -2.00 to 0.80; p = .40) during pneumoperitoneum in the supraglottic device and the tracheal tube group. The tracheal tube group had higher odds of sore throat (OR 3.30, 95% CI: 1.69-6.45; p = .0005) and the supraglottic airway group had faster recovery time (MD 4.21, 95% CI: 3.12-5.31; p < .0001), which were statistically significant. The certainty of evidence is graded low.
CONCLUSION
There is low quality evidence to suggest that for pediatric laparoscopic surgeries of short duration, supraglottic devices could provide comparable intraoperative ventilation in terms of peak airway pressures and end tidal carbon dioxide, with lower odds of postoperative sore throat and faster recovery time when compared to tracheal tubes.
Topics: Humans; Child; Intubation, Intratracheal; Carbon Dioxide; Pneumoperitoneum; Laparoscopy; Pharyngitis; Laryngeal Masks
PubMed: 37386873
DOI: 10.1111/pan.14725 -
Journal of Critical Care Oct 2023Nebulized colistin (NC) is a potential therapy for ventilator-associated pneumonia (VAP); however, the clinical efficacy and safety of NC remain unclear. This study... (Meta-Analysis)
Meta-Analysis Review
PURPOSE
Nebulized colistin (NC) is a potential therapy for ventilator-associated pneumonia (VAP); however, the clinical efficacy and safety of NC remain unclear. This study investigated whether NC is an effective therapy for patients with VAP.
MATERIALS AND METHODS
We performed a search in Web of Science, PubMed, Embase, and the Cochrane Library to retrieve randomized controlled trials (RCTs) and observational studies published at any time until February 6, 2023. The primary outcome was clinical response. Secondary outcomes included microbiological eradication, overall mortality, length of mechanical ventilation (MV), length of intensive care unit stay (ICU-LOS), nephrotoxicity, neurotoxicity, and bronchospasm.
RESULTS
Seven observational studies and three RCTs were included. Despite exhibiting a higher microbiological eradication rate (OR,2.21; 95%CI, 1.25-3.92) and the same nephrotoxicity risk (OR,0.86; 95%CI, 0.60-1.23), NC was not significantly different in clinical response (OR,1.39; 95%CI, 0.87-2.20), overall mortality (OR,0.74; 95%CI, 0.50-1.12), MV length (mean difference (MD),-2.5; 95%CI, -5.20-0.19), and the ICU-LOS (MD,-1.91; 95%CI, -6.66-2.84) than by the intravenous antibiotic. Besides, the risk of bronchospasm raised significantly (OR, 5.19; 95%CI, 1.05-25.52) among NC.
CONCLUSION
NC was associated with better microbiological outcomes but did not result in any remarkable changes in the prognosis of patients with VAP.
Topics: Humans; Pneumonia, Ventilator-Associated; Colistin; Bronchial Spasm; Respiration, Artificial; Anti-Bacterial Agents
PubMed: 37120926
DOI: 10.1016/j.jcrc.2023.154315 -
Noninvasive mechanical ventilation assistance in amyotrophic lateral sclerosis: a systematic review.Sao Paulo Medical Journal = Revista... 2023Respiratory failure is the most common cause of death in patients with amyotrophic lateral sclerosis (ALS), and morbidity is related to poor quality of life (QOL)....
BACKGROUND
Respiratory failure is the most common cause of death in patients with amyotrophic lateral sclerosis (ALS), and morbidity is related to poor quality of life (QOL). Non-invasive ventilation (NIV) may be associated with prolonged survival and QOL in patients with ALS.
OBJECTIVES
To assess whether NIV is effective and safe for patients with ALS in terms of survival and QOL, alerting the health system.
DESIGN AND SETTING
Systematic review was conducted in accordance with Preferred Reporting Items for Systematic Reviews and Meta-Analyses reporting standards using population, intervention, comparison, and outcome strategies.
METHODS
The Cochrane Library, CENTRAL, MEDLINE, LILACS, EMBASE, and CRD databases were searched based on the eligibility criteria for all types of studies on NIV use in patients with ALS published up to January 2022. Data were extracted from the included studies, and the findings were presented using a narrative synthesis.
RESULTS
Of the 120 papers identified, only 14 were related to systematic reviews. After thorough reading, only one meta-analysis was considered eligible. In the second stage, 248 studies were included; however, only one systematic review was included. The results demonstrated that NIV provided relief from the symptoms of chronic hypoventilation, increased survival, and improved QOL compared to standard care. These results varied according to clinical phenotype.
CONCLUSIONS
NIV in patients with ALS improves the outcome and can delay the indication for tracheostomy, reducing expenditure on hospitalization and occupancy of intensive care unit beds.
SYSTEMATIC REVIEW REGISTRATION
PROSPERO database: CRD42021279910 - https://www.crd.york.ac.uk/prospero/display_record.php?RecordID=279910.
Topics: Humans; Amyotrophic Lateral Sclerosis; Noninvasive Ventilation; Quality of Life; Respiration, Artificial; Respiratory Insufficiency
PubMed: 37436254
DOI: 10.1590/1516-3180.2022.0470.R1.100423 -
Cardiovascular Research Feb 2024Resistant hypertension is associated with a high risk of cardiovascular disease, chronic kidney disease, and mortality. Yet, its management is challenging. This study... (Meta-Analysis)
Meta-Analysis
AIMS
Resistant hypertension is associated with a high risk of cardiovascular disease, chronic kidney disease, and mortality. Yet, its management is challenging. This study aims to establish the comparative effectiveness of pharmacologic and interventional treatments by conducting a network meta-analysis.
METHODS AND RESULTS
MEDLINE, Cochrane Register of Controlled Trials, and Web of Science Core Collection were systematically searched in March 2022. Randomized controlled trials comparing treatment options for management of resistant hypertension were included. Outcomes were blood pressure (BP) changes, measured in the office and in 24 h ambulatory BP measurement. We applied a frequentist random effects model to perform a network meta-analysis combining placebo medication and sham procedure as the reference comparator. From 4771 records, 24 studies met the inclusion criteria with 3458 included patients in total. Twelve active treatment alternatives [spironolactone, doxazosin, β-blocker, clonidine, darusentan, guanfacine, various types of renal sympathetic denervation, lifestyle intervention, continuous positive airway pressure, and baroreflex activation therapy (BAT)] were analysed. Among all comparators, spironolactone had the highest ranking probability and was considered the most effective treatment to reduce office systolic blood pressure (sBP) [-13.30 mmHg (-17.89; -8.72); P < 0.0001] and 24 h sBP [-8.46 mmHg (-12.54; -4.38); P < 0.0001] in patients with resistant hypertension. Lifestyle interventions were the most effective non-pharmacological treatment, lowering office sBP by -7.26 mmHg (-13.73; -0.8), whereas BAT lowered office sBP by -7.0 (-18.59; 4.59). Renal denervation lowered office sBP by -5.64 mmHg (-12.95; 1.66) and -3.79 mmHg (-11.39; 3.8) depending on the type of the procedure.
CONCLUSION
Among all pharmacologic and interventional treatments, spironolactone is the most effective treatment in reducing BP in patients with resistant hypertension. More comparative trials and especially trials with long-term follow-up are needed. In the meanwhile, we have to conclude that a combination of spironolactone and lifestyle modification are the most effective treatments in resistant hypertension.
Topics: Humans; Spironolactone; Network Meta-Analysis; Antihypertensive Agents; Hypertension; Blood Pressure; Kidney; Treatment Outcome
PubMed: 37890022
DOI: 10.1093/cvr/cvad165 -
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 -
Critical Care Medicine Feb 2024Given the uncertainty regarding the optimal approach for airway management for adult patients with out-of-hospital cardiac arrest (OHCA), we conducted a systematic... (Meta-Analysis)
Meta-Analysis
Supraglottic Airway Versus Tracheal Intubation for Airway Management in Out-of-Hospital Cardiac Arrest: A Systematic Review, Meta-Analysis, and Trial Sequential Analysis of Randomized Controlled Trials.
OBJECTIVES
Given the uncertainty regarding the optimal approach for airway management for adult patients with out-of-hospital cardiac arrest (OHCA), we conducted a systematic review and meta-analysis to compare the use of supraglottic airways (SGAs) with tracheal intubation for initial airway management in OHCA.
DATA SOURCES
We searched MEDLINE, PubMed, Embase, Cochrane Library, as well as unpublished sources, from inception to February 7, 2023.
STUDY SELECTION
We included randomized controlled trials (RCTs) of adult OHCA patients randomized to SGA compared with tracheal intubation for initial prehospital airway management.
DATA EXTRACTION
Reviewers screened abstracts, full texts, and extracted data independently and in duplicate. We pooled data using a random-effects model. We used the modified Cochrane risk of bias 2 tool and assessed certainty of evidence using the Grading Recommendations Assessment, Development, and Evaluation approach. We preregistered the protocol on PROSPERO (CRD42022342935).
DATA SYNTHESIS
We included four RCTs ( n = 13,412 patients). Compared with tracheal intubation , SGA use probably increases return of spontaneous circulation (ROSC) (relative risk [RR] 1.09; 95% CI, 1.02-1.15; moderate certainty) and leads to a faster time to airway placement (mean difference 2.5 min less; 95% CI, 1.6-3.4 min less; high certainty). SGA use may have no effect on survival at longest follow-up (RR 1.06; 95% CI, 0.84-1.34; low certainty), has an uncertain effect on survival with good functional outcome (RR 1.11; 95% CI, 0.82-1.50; very low certainty), and may have no effect on risk of aspiration (RR 1.04; 95% CI, 0.94 to 1.16; low certainty).
CONCLUSIONS
In adult patients with OHCA, compared with tracheal intubation, the use of SGA for initial airway management probably leads to more ROSC, and faster time to airway placement, but may have no effect on longer-term survival outcomes or aspiration events.
Topics: Adult; Humans; Airway Management; Intubation, Intratracheal; Out-of-Hospital Cardiac Arrest; Randomized Controlled Trials as Topic; Return of Spontaneous Circulation
PubMed: 37962112
DOI: 10.1097/CCM.0000000000006112