Evidence map›Paper›PMID 28780538›Full record

SynthesisBMJ open2017

Optimal dose of succinylcholine for laryngeal mask airway insertion: systematic review, meta-analysis and metaregression of randomised control trials.

Alan Hsi-Wen Liao, Yu-Cih Lin, Chyi-Huey Bai, Chien-Yu Chen

Open access · goldAbstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in BMJ open, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed, 1 pooled it
1.2field-weighted citation impact, top 20% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

1 citing paper in PubMed, 1 synthesis or guideline pooled it, 5 citations in OpenAlex.

  1. Pooled it
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

4 authors at 3 institutions in 1 country.

Alan Hsi-Wen LiaoDepartment of Anesthesiology, Taipei Medical University Hospital, Taipei, Taiwan.
Yu-Cih LinSchool of Nursing, College of Nursing, Taipei Medical University, Taipei, Taiwan.
Chyi-Huey BaiSchool of Public Health, College of Nutrition and Public Health, Taipei Medical University, Taipei, Taiwan.
Chien-Yu ChenDepartment of Anesthesiology, Taipei Medical University Hospital, Taipei, Taiwan.
Taipei Medical University Hospital · TWNational Yang Ming Chiao Tung University · TWTaipei Medical University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

objectivesTo evaluate the optimal dose of succinylcholine for laryngeal mask airway (LMA) insertion and all related morbidities.

designSystematic review, meta-analysis and metaregression of randomised controlled trials (RCTs). DATA SOURCE AND STUDY ELIGIBILITY CRITERIA: A comprehensive search of RCTs in the PubMed, Embase, the Cochrane Library and the ClinicalTrials.gov registry up to July 2016 and articles that evaluated the use of succinylcholine chloride for LMA insertion were included in the analyses. The relative risk (RR) and the corresponding 95% CIs were determined.

interventionSuccinylcholine as the coinduction agent and the doses were divided into mini (≤0.3 mg/kg) and low (0.3-1.0 mg/kg) doses for dose-dependent effect analyses. PRIMARY AND SECONDARY OUTCOMES: The primary outcome was the first-attempt LMA insertion failure rate. Secondary outcomes included all related adverse events.

resultsData from 10 RCTs comprising 625 participants showed that succinylcholine reduced the first-attempt LMA insertion failure rate (RR, 0.22; 95% CI 0.12 to 0.43), coughing and gagging (RR, 0.26; 95% CI 0.15 to 0.45) and laryngospasm (RR, 0.14; 95% CI 0.05 to 0.39). The use of succinylcholine did not result in a significant increase of postoperative myalgia (RR, 2.58; 95% CI 0.79 to 8.44) and did not reduce the risk of postoperative sore throat (RR, 0.76; 95% CI 0.55 to 1.03). Subgroup analysis further showed that low-dose succinylcholine reduced the LMA insertion failure rate and its related coughing and gagging when compared with mini dose.

conclusionThe use of succinylcholine compared with none can facilitate LMA insertion and reduce insertion-related reflexes without significant postoperative myalgia. However, additional prospective studies with a larger sample size are required to fully evaluate the dose-dependent effect and complications of succinylcholine for LMA insertion.

Indexed as

Laryngeal MasksCoughDose-Response Relationship, DrugGaggingHumansIntubation, IntratrachealNeuromuscular Depolarizing AgentsPharyngitisPostoperative PainRandomized Controlled Trials as TopicSuccinylcholineTreatment OutcomeNeuromuscular Depolarizing AgentsSuccinylcholinelaryngeal maskmeta-analysissuccinylcholine

Identifiers

PMID28780538
PMCPMC5724107
OpenAlexW2742551172

What OpenQuestion holds

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LicenceCC BY-NC
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.