Evidence map›Paper›PMID 35031070›Full record

SynthesisCritical care (London, England)2022

Value of variation of end-tidal carbon dioxide for predicting fluid responsiveness during the passive leg raising test in patients with mechanical ventilation: a systematic review and meta-analysis.

Haijun Huang, Chenxia Wu, Qinkang Shen, Yixin Fang, Hua Xu

Abstract readMeta-AnalysisSystematic Review
In one paragraph

Synthesis in Critical care (London, England), 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
9citing papers in PubMed, 2 pooled it
–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

9 citing papers in PubMed, 2 syntheses or guidelines pooled it.

  1. Pooled it
  2. Pooled it
  3. Trial
  4. Review
  5. Article
  6. Observational
  7. End-tidal COPakistan journal of medical sciences · 2025
    Article
  8. Review
  9. Review
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

5 authors.

Haijun HuangDepartment of Emergency, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310018, Zhejiang, China.
Chenxia WuDepartment of Emergency, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310018, Zhejiang, China.
Qinkang ShenDepartment of Emergency, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310018, Zhejiang, China.
Yixin FangDepartment of Emergency, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310018, Zhejiang, China.
Hua XuDepartment of Emergency, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, 310018, Zhejiang, China. hz_xuhua@163.com.

Funding

Zhejiang Traditional Chinese Medicine Science and Technology Project NO. 2020ZA046
6 · The paper itself

Abstract

backgroundThe ability of end-tidal carbon dioxide (ΔEtCO2) for predicting fluid responsiveness has been extensively studied with conflicting results. This meta-analysis aimed to explore the value of ΔEtCO2 for predicting fluid responsiveness during the passive leg raising (PLR) test in patients with mechanical ventilation.

methodsPubMed, Embase, and Cochrane Central Register of Controlled Trials were searched up to November 2021. The diagnostic odds ratio (DOR), sensitivity, and specificity were calculated. The summary receiver operating characteristic curve was estimated, and the area under the curve (AUROC) was calculated. Q test and I

resultsOverall, six studies including 298 patients were included in this review, of whom 149 (50%) were fluid responsive. The cutoff values of ΔEtCO2 in four studies was 5%, one was 5.8% and the other one was an absolute increase 2 mmHg. Heterogeneity between studies was assessed with an overall Q = 4.098, I

conclusionsThough the limited number of studies included and study heterogeneity, our meta-analysis confirmed that the ΔEtCO2 performed moderately in predicting fluid responsiveness during the PLR test in patients with mechanical ventilation.

Indexed as

Carbon DioxideRespiration, ArtificialFluid TherapyHumansLegSensitivity and SpecificityCarbon DioxideEnd-tidal carbon dioxideFluid responsivenessMechanical ventilationMeta-analysis

Identifiers

PMID35031070
PMCPMC8760720

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Registered trials

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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.