Evidence map›Paper›PMID 33635945›Full record

Observational studyAnesthesiology2021

A Lower Tidal Volume Regimen during One-lung Ventilation for Lung Resection Surgery Is Not Associated with Reduced Postoperative Pulmonary Complications.

Douglas A Colquhoun, Aleda M Leis, Amy M Shanks, Michael R Mathis, Bhiken I Naik, Marcel E Durieux, Sachin Kheterpal, Nathan L Pace, Wanda M Popescu, Robert B Schonberger and 8 more

Registry-linked trialOpen access · bronzeAbstract readMulticenter StudyObservational Study
In one paragraph

Observational study in Anesthesiology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05922449 (Using Thoracic Paravertebral Block for Perioperative Lung Preservation During VATS Pulmonary Surgery), which is not on this map. Cited by 29 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 2 pooled it
10.7field-weighted citation impact, top 1% 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.

NCT05922449 nacompletednot on this mapstarted 2023, after this paper: background citation

Using Thoracic Paravertebral Block for Perioperative Lung Preservation During VATS Pulmonary Surgery: A Dual Center Randomized Controlled Trial

TypeinterventionalSponsorBeijing Tongren HospitalRan2023 to 2024Enrolled302ConditionsPostoperative Pulmonary ComplicationsArmsThoracic Paravertebral Block
3 · Its place in the literature

Who cites it

29 citing papers in PubMed, 2 syntheses or guidelines pooled it, 88 citations in OpenAlex.

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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

18 authors at 1 institution in 1 country.

Douglas A Colquhoun
Aleda M Leis
Amy M Shanks
Michael R Mathis
Bhiken I Naik
Marcel E Durieux
Sachin Kheterpal
Nathan L Pace
Wanda M Popescu
Robert B Schonberger
Benjamin D Kozower
Dustin M Walters
Justin D Blasberg
Andrew C Chang
Michael F Aziz
Izumi Harukuni
Brandon H Tieu
Randal S Blank
University of Michigan · US

Funding

Yale Clinical and Translational Science Award (U Component)UL1TR001863 · NCATS · YALE UNIVERSITY · PI John H. Krystal, LUCILA OHNO-MACHADO · 2016 to 2026
$102.9M
University of Michigan Anesthesiology Post-Doctoral Research Training ProgramT32GM103730 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI Chad M Brummett, SACHIN KHETERPAL · 2014 to 2026
$1.9M
Early Diagnosis of Heart Failure: A Perioperative Data-Driven ApproachK01HL141701 · NHLBI · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI MATHIS, MICHAEL ROBERT · 2018 to 2022
$862k
NCATS NIH HHS UL1 TR001863NHLBI NIH HHS K01 HL141701NIGMS NIH HHS T32 GM103730
6 · The paper itself

Abstract

backgroundProtective ventilation may improve outcomes after major surgery. However, in the context of one-lung ventilation, such a strategy is incompletely defined. The authors hypothesized that a putative one-lung protective ventilation regimen would be independently associated with decreased odds of pulmonary complications after thoracic surgery.

methodsThe authors merged Society of Thoracic Surgeons Database and Multicenter Perioperative Outcomes Group intraoperative data for lung resection procedures using one-lung ventilation across five institutions from 2012 to 2016. They defined one-lung protective ventilation as the combination of both median tidal volume 5 ml/kg or lower predicted body weight and positive end-expiratory pressure 5 cm H2O or greater. The primary outcome was a composite of 30-day major postoperative pulmonary complications.

resultsA total of 3,232 cases were available for analysis. Tidal volumes decreased modestly during the study period (6.7 to 6.0 ml/kg; P < 0.001), and positive end-expiratory pressure increased from 4 to 5 cm H2O (P < 0.001). Despite increasing adoption of a "protective ventilation" strategy (5.7% in 2012 vs. 17.9% in 2016), the prevalence of pulmonary complications did not change significantly (11.4 to 15.7%; P = 0.147). In a propensity score matched cohort (381 matched pairs), protective ventilation (mean tidal volume 6.4 vs. 4.4 ml/kg) was not associated with a reduction in pulmonary complications (adjusted odds ratio, 0.86; 95% CI, 0.56 to 1.32). In an unmatched cohort, the authors were unable to define a specific alternative combination of positive end-expiratory pressure and tidal volume that was associated with decreased risk of pulmonary complications.

conclusionsIn this multicenter retrospective observational analysis of patients undergoing one-lung ventilation during thoracic surgery, the authors did not detect an independent association between a low tidal volume lung-protective ventilation regimen and a composite of postoperative pulmonary complications. EDITOR’S PERSPECTIVE:

Indexed as

FemaleHumansLungMaleMiddle AgedOne-Lung VentilationPostoperative ComplicationsRetrospective StudiesTidal Volume

Identifiers

PMID33635945
PMCPMC8274370
OpenAlexW3132018562

What OpenQuestion holds

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Registered trials

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.