Evidence map›Paper›PMID 42121165›Full record

SynthesisCritical care (London, England)2026

Induction agents for emergency tracheal intubation in critically ill adults: a systematic review and network meta-analysis.

Fernando G Zampieri, Raysa C Schmidt, Bruno A M P Besen, Fernando J D S Ramos, François Lamontagne, Neill K J Adhikari, Flávio G R Freitas, Flávia R Machado

Abstract readNetwork Meta-AnalysisSystematic Review
In one paragraph

Synthesis in Critical care (London, England), 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing papers in PubMed
–field-weighted citation impact
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. Article
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

8 authors.

Fernando G ZampieriDepartment of Critical Care Medicine, University of Alberta, CSB 2-124, 8440 112 St NW, Edmonton, AB, T6G 2B7, Canada. fzampier@ualberta.ca.
Raysa C SchmidtBrazilian Research in Intensive Care Network (BRICNet), São Paulo, Brazil.
Bruno A M P BesenBrazilian Research in Intensive Care Network (BRICNet), São Paulo, Brazil.
Fernando J D S RamosBrazilian Research in Intensive Care Network (BRICNet), São Paulo, Brazil.
François LamontagneDepartment of Medicine, Université de Sherbrooke, Sherbrooke, Canada.
Neill K J AdhikariDepartment of Critical Care Medicine, Sunnybrook Health Sciences Centre, University of Toronto, Toronto, Canada.
Flávio G R FreitasBrazilian Research in Intensive Care Network (BRICNet), São Paulo, Brazil.
Flávia R MachadoBrazilian Research in Intensive Care Network (BRICNet), São Paulo, Brazil.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundEtomidate, ketamine, and propofol are all used as induction agents for emergency tracheal intubation in critically ill adults but it remains uncertain which agent should be preferable.

methodsWe searched MEDLINE and Embase (inception to December 2025) for randomized controlled trials comparing etomidate, ketamine, propofol, or ketamine-propofol combination (ketofol) for emergency or rapid sequence intubation in critically ill adults. We performed random-effects network meta-analysis using the frequentist framework. The primary outcome was short-term mortality (28-30 day, or ICU/in-hospital mortality when unavailable). Secondary outcomes included cardiovascular collapse, post-induction hypotension, vasopressor use, first-pass intubation success, and peri-intubation cardiac arrest. Certainty of evidence was assessed using the CINeMA framework.

resultsNine trials (4,672 patients, four treatments) were included. Ketamine and etomidate probably result in similar mortality (OR 0.96, 95% CI 0.80-1.16; [Formula: see text] = 30%; moderate certainty). Evidence for other mortality comparisons was very uncertain: ketamine vs propofol (OR 1.53, 0.80-2.93; 1 trial; low certainty) and etomidate vs propofol (OR 0.63, 0.32-1.24; indirect only; very low certainty). Compared with etomidate, ketamine probably increases cardiovascular collapse (OR 1.44, 1.20-1.71; moderate certainty) and may increase post-induction hypotension (OR 1.34, 1.07-1.68; low certainty) and peri-intubation vasopressor use (OR 1.45, 1.21-1.74; low certainty). There was probably little or no difference in first-pass intubation success or cardiac arrest.

conclusionsEtomidate and ketamine probably result in similar mortality, but confidence intervals are compatible with clinically important differences in either direction-ketamine probably causes more peri-intubation hemodynamic instability. Beyond one trial, no randomized evidence exists for propofol in emergency intubation of critically ill adults.

Indexed as

Intubation, IntratrachealAnesthetics, IntravenousCritical IllnessEtomidateHumansKetaminePropofolAnesthetics, IntravenousEtomidateKetaminePropofolCritically illEtomidateIntubationKetamineNetwork meta-analysisPropofolRapid sequence induction

Identifiers

PMID42121165
PMCPMC13245039

What OpenQuestion holds

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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.