Evidence map›Paper›PMID 28082337›Full record

Trial reportJournal of applied physiology (Bethesda, Md. : 1985)2017

Contribution of rostral fluid shift to intrathoracic airway narrowing in asthma.

Swati A Bhatawadekar, Mark D Inman, Jeffrey J Fredberg, Susan M Tarlo, Owen D Lyons, Gabriel Keller, Azadeh Yadollahi

Registry-linked trialOpen access · bronzeAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Journal of applied physiology (Bethesda, Md. : 1985), 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03303586 (Investigating the Effects of Wearing Compression Stockings to Improve Asthma Symptoms at Night), which is not on this map. Cited by 12 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 29% 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.

NCT03303586 narecruitingnot on this map

Investigating the Effects of Wearing Compression Stockings to Improve Asthma Symptoms at Night

TypeinterventionalSponsorUniversity Health Network, TorontoRan2017 to 2026Enrolled40ConditionsAsthmaArmsCompression Stockings, Control
3 · Its place in the literature

Who cites it

12 citing papers in PubMed, 1 synthesis or guideline pooled it, 18 citations in OpenAlex.

  1. Pooled it
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  4. Review
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  7. Review
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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

7 authors at 5 institutions in 3 countries.

Swati A BhatawadekarToronto Rehabilitation Institute-University Health Network, Toronto, Ontario, Canada.
Mark D InmanFaculty of Medicine (Respirology), McMaster University, Hamilton, Ontario, Canada.
Jeffrey J FredbergDepartment of Environmental Health, Harvard T. H. Chan School of Public Health, Boston, Massachusetts.
Susan M TarloDepartment of Medicine and Dalla Lana School of Public Health, University of Toronto, Toronto Western Hospital-University Health Network, Toronto, Ontario, Canada.
Owen D LyonsDepartment of Medicine (Respirology), University of Toronto, Toronto, Ontario, Canada.
Gabriel KellerToronto Rehabilitation Institute-University Health Network, Toronto, Ontario, Canada.
Azadeh YadollahiToronto Rehabilitation Institute-University Health Network, Toronto, Ontario, Canada; Azadeh.Yadollahi@uhn.ca.
Toronto Rehabilitation Institute · CAUniversity of Toronto · CAHarvard University · USMcMaster University · CAUniversity Health Network · CA

Funding

Physics of collective cellular migration in lung health and diseaseP01HL120839 · NHLBI · HARVARD SCHOOL OF PUBLIC HEALTH · PI FREDBERG, JEFFREY J · 2014 to 2018
$12.2M
NHLBI NIH HHS P01 HL120839
6 · The paper itself

Abstract

In asthma, supine posture and sleep increase intrathoracic airway narrowing. When humans are supine, because of gravity fluid moves out of the legs and accumulates in the thorax. We hypothesized that fluid shifting out of the legs into the thorax contributes to the intrathoracic airway narrowing in asthma. Healthy and asthmatic subjects sat for 30 min and then lay supine for 30 min. To simulate overnight fluid shift, supine subjects were randomized to receive increased fluid shift out of the legs with lower body positive pressure (LBPP, 10-30 min) or none (control) and crossed over. With forced oscillation at 5 Hz, respiratory resistance (R5) and reactance (X5, reflecting respiratory stiffness) and with bioelectrical impedance, leg and thoracic fluid volumes (LFV, TFV) were measured while subjects were seated and supine (0 min, 30 min). In 17 healthy subjects (age: 51.8 ± 10.9 yr, FEV

Indexed as

Airway ResistanceAsthmaBody FluidsCase-Control StudiesCross-Over StudiesDouble-Blind MethodFemaleFluid ShiftsHumansLegMaleMiddle AgedPressureRespiratory MechanicsRespiratory SystemSupine Positionasthma mechanismsfluid shiftlung physiologyrespiratory mechanicsthoracic fluid

Identifiers

PMID28082337
PMCPMC5504396
OpenAlexW2574886648

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.