Evidence map›Paper›PMID 28013296›Full record

Observational studyNeonatology2017

Thoracoabdominal Asynchrony Is Not Associated with Oxyhemoglobin Saturation in Recovering Premature Infants.

Colleen Brennan, Lara Ulm, Samuel Julian, Aaron Hamvas, Thomas Ferkol, Julie Hoffman, Laura Linneman, James Kemp

Abstract readMulticenter StudyObservational Study
In one paragraph

Observational study in Neonatology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed, 1 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

4 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Effects of respiratory physiotherapeutic interventions on pulmonary mechanics, vital parameters and pain in newborns: A systematic review.Canadian journal of respiratory therapy : CJRT = Revue canadienne de la therapie respiratoire : RCTR · 2025
    Pooled it
  2. Thoracoabdominal asynchrony in a virtual preterm infant: computational modeling and analysis.American journal of physiology. Lung cellular and molecular physiology · 2023
    Article
  3. Article
  4. Article
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

8 authors.

Colleen BrennanDepartment of Pediatrics, Washington University School of Medicine, St. Louis, MO, USA.
Lara Ulm
Samuel Julian
Aaron Hamvas
Thomas Ferkol
Julie Hoffman
Laura Linneman
James Kemp

Funding

Data Coordinating Center for the Prematurity and Respiratory Outcomes ProgramU01HL101794 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI SCHMIDT, BARBARA · 2010 to 2014
$10.3M
Influence of the Enteric Microbiome on the Genesis of Bronchopulmonary DysplasiaU01HL101465 · NHLBI · WASHINGTON UNIVERSITY · PI FERKOL, THOMAS W, WARNER, BARBARA B · 2010 to 2014
$2.1M
NHLBI NIH HHS U01 HL101465NHLBI NIH HHS U01 HL101794
6 · The paper itself

Abstract

backgroundRecovering premature infants are at risk for hypoxemia and lack of synchrony between their rib cage and abdomen due to airflow obstruction and poor respiratory compliance. Thoracoabdominal asynchrony (TAA) is a useful marker of resistive and elastic lung properties. Whether TAA predicts oxygenation is unknown.

objectivesWe investigated oxyhemoglobin saturation (SpO2%) and TAA (phase angle, φ) in preterm infants with/without high-humidity nasal cannula (HHNC).

methodsA cross-sectional observational study was conducted in 92 infants at 32 weeks' postmenstrual age. We measured SpO2% with pulse oximetry and TAA with φ via respiratory inductance plethysmography in infants (mean gestational age: 26.4 + 1.3 weeks) who required room air (n = 18) or HHNC with/without supplemental oxygen (1-5 liters per minute, FiO2 0.21-0.33, n = 74). We calculated median SpO2% from 24.7 + 10.0 min of quiet sleep and median φ from up to 60 breaths.

resultsInfants breathing room air alone had marked TAA (φ = 83.6 + 32.9°, range: 10.9-148.5) as did those receiving varying degrees of ventilatory and oxygen support via HHNC (range of group means, φ = 47.0-90.0°). Infants breathing room air had statically greater median SpO2% than those receiving support (96.3 + 0.6% vs. 91.3 + 0.6%; ANOVA p = 0.001). SpO2% was not associated with TAA in either group (r2 = 0.09).

conclusionRecovering premature infants exhibited TAA regardless of need for ventilatory support and supplemental oxygen. TAA was not associated with SpO2% in either group. Maintenance of SpO2% does not require correction of TAA.

Indexed as

AbdomenCross-Sectional StudiesFemaleGestational AgeHumansHypoxiaInfant, Extremely PrematureInfant, NewbornInfant, Very Low Birth WeightMaleMissouriNoninvasive VentilationOximetryOxygenOxyhemoglobinsPlethysmographyOxygenOxyhemoglobinsHigh-humidity nasal cannulaHypoxemiaPrematurityRespiratory inductance plethysmography

Identifiers

PMID28013296
PMCPMC5443694

What OpenQuestion holds

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LicenceTDM
Read underepoch 390

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.