Evidence map›Paper›PMID 32472272›Full record

ArticleAnnals of intensive care2020

Recruitment pattern of the diaphragm and extradiaphragmatic inspiratory muscles in response to different levels of pressure support.

L H Roesthuis, J G van der Hoeven, H W H van Hees, W-J M Schellekens, J Doorduin, L M A Heunks

2 registry-linked trialsOpen access · goldAbstract read
In one paragraph

Article in Annals of intensive care, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 2 registered trials, which are not on this map. Cited by 15 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 11% 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.

NCT07323472 narecruitingnot on this mapstarted 2026, after this paper: background citation

Analysis of Respiratory Drive Activation, Ventilation, and Pulmonary Aeration Resulting From Body Lateralization in Critically Ill Patients Under Mechanical Ventilation

TypeinterventionalSponsorUniversity of PernambucoRan2026 to 2027Enrolled30ConditionsIntensive Care Units (ICUs)ArmsAutomatic Lateralization Therapy, Supine Positioning
NCT07637149 phase4not yet recruitingnot on this mapstarted 2026, after this paper: background citation

the Effect of Doxapram on Diaphragmatic Excursion(DE) During Weaning From Mechanical Ventilation :a Randomized Double Blinded Study.

TypeinterventionalSponsorKasr El Aini HospitalRan2026 to 2027Enrolled60ConditionsMechanically Ventilated ICU Patients, Diaphragm ExcursionArmsDoxapram
3 · Its place in the literature

Who cites it

15 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.

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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

6 authors at 3 institutions in 1 country.

L H RoesthuisDepartment of Intensive Care Medicine, Radboud University Medical Center, Nijmegen, The Netherlands.
J G van der HoevenDepartment of Intensive Care Medicine, Radboud University Medical Center, Nijmegen, The Netherlands.
H W H van HeesDepartment of Pulmonary Diseases, Radboud University Medical Center, Nijmegen, The Netherlands.
W-J M SchellekensDepartment of Anesthesiology, UMC Utrecht, Utrecht, The Netherlands.
J DoorduinDonders Institute for Brain, Cognition and Behaviour, Department of Neurology, Radboud University Medical Center, Nijmegen, The Netherlands.
L M A HeunksDepartment of Intensive Care Medicine, Amsterdam UMC, Location VUmc, Postbox 7057, 1007 MB, Amsterdam, The Netherlands. l.heunks@amsterdamumc.nl.ORCID http://orcid.org/0000-0003-3196-4665
Radboud University Nijmegen · NLAmsterdam Neuroscience · NLUtrecht University · NL

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundInappropriate ventilator assist plays an important role in the development of diaphragm dysfunction. Ventilator under-assist may lead to muscle injury, while over-assist may result in muscle atrophy. This provides a good rationale to monitor respiratory drive in ventilated patients. Respiratory drive can be monitored by a nasogastric catheter, either with esophageal balloon to determine muscular pressure (gold standard) or with electrodes to measure electrical activity of the diaphragm. A disadvantage is that both techniques are invasive. Therefore, it is interesting to investigate the role of surrogate markers for respiratory dive, such as extradiaphragmatic inspiratory muscle activity. The aim of the current study was to investigate the effect of different inspiratory support levels on the recruitment pattern of extradiaphragmatic inspiratory muscles with respect to the diaphragm and to evaluate agreement between activity of extradiaphragmatic inspiratory muscles and the diaphragm.

methodsActivity from the alae nasi, genioglossus, scalene, sternocleidomastoid and parasternal intercostals was recorded using surface electrodes. Electrical activity of the diaphragm was measured using a multi-electrode nasogastric catheter. Pressure support (PS) levels were reduced from 15 to 3 cmH

resultsWe included 17 ventilated patients. Diaphragm and extradiaphragmatic inspiratory muscle activity increased in response to lower PS levels (36 ± 6% increase for the diaphragm, 30 ± 6% parasternal intercostals, 41 ± 6% scalene, 40 ± 8% sternocleidomastoid, 43 ± 6% alae nasi and 30 ± 6% genioglossus). Changes in diaphragm activity correlated best with changes in alae nasi activity (r

conclusionsExtradiaphragmatic inspiratory muscle activity increases in response to lower inspiratory support levels. However, there is a poor correlation and agreement with the change in diaphragm activity, limiting the use of surface electromyography (EMG) recordings of extradiaphragmatic inspiratory muscles as a surrogate for electrical activity of the diaphragm.

Indexed as

Electrical activity of the diaphragmExtradiaphragmatic inspiratory muscle activityRespiratory driveSurface electromyographyVentilated critically ill patients

Identifiers

PMID32472272
PMCPMC7256918
OpenAlexW3032211661

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.