Evidence map›Paper›PMID 31645052›Full record

ArticlePediatric research2020

Premature birth impacts bolus size and shape through nursing in infant pigs.

Christopher J Mayerl, Alexis M Myrla, Laura E Bond, Bethany M Stricklen, Rebecca Z German, Francois D H Gould

Abstract readComparative Study
In one paragraph

Article in Pediatric research, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed
–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

26 citing papers in PubMed.

  1. Article
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  7. Longitudinal Changes in Aerodigestive Responses to Varying Nipple Properties in Infant Pigs.Journal of experimental zoology. Part A, Ecological and integrative physiology · 2025
    Article
  8. The effects of simulated gastroesophageal reflux on infant pig oropharyngeal feeding physiology.American journal of physiology. Gastrointestinal and liver physiology · 2024
    Article
  9. Article
  10. Review
  11. Evolution, diversification and function of the maternal-infant dyad in mammalian feeding.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2023
    Article
  12. Impact of volume and rate of milk delivery on coordination of respiration and swallowing in infant pigs.Journal of experimental zoology. Part A, Ecological and integrative physiology · 2023
    Article
  13. Article
  14. Review
  15. The effect of stiffness and hole size on nipple compression in infant suckling.Journal of experimental zoology. Part A, Ecological and integrative physiology · 2023
    Article
  16. Article
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  18. Article
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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.

Christopher J MayerlDepartment of Anatomy and Neurobiology, Northeast Ohio Medical University, 4209 State Route 44, PO Box 95, Rootstown, OH, 44272, USA. cmayerl@neomed.edu.
Alexis M MyrlaDepartment of Anatomy and Neurobiology, Northeast Ohio Medical University, 4209 State Route 44, PO Box 95, Rootstown, OH, 44272, USA.
Laura E BondDepartment of Anatomy and Neurobiology, Northeast Ohio Medical University, 4209 State Route 44, PO Box 95, Rootstown, OH, 44272, USA.
Bethany M StricklenDepartment of Anatomy and Neurobiology, Northeast Ohio Medical University, 4209 State Route 44, PO Box 95, Rootstown, OH, 44272, USA.
Rebecca Z GermanDepartment of Anatomy and Neurobiology, Northeast Ohio Medical University, 4209 State Route 44, PO Box 95, Rootstown, OH, 44272, USA.
Francois D H GouldDepartment of Anatomy and Neurobiology, Northeast Ohio Medical University, 4209 State Route 44, PO Box 95, Rootstown, OH, 44272, USA.

Funding

The effect of sensory intervention on swallowing and respiration through neurological maturation in preterm infantsR01HD096881 · NICHD · NORTHEAST OHIO MEDICAL UNIVERSITY · PI GERMAN, REBECCA Z · 2019 to 2023
$2.9M
The Effect of Preterm Birth and RLN Damage on Airway Protection and MaturationR01HD088561 · NICHD · NORTHEAST OHIO MEDICAL UNIVERSITY · PI GERMAN, REBECCA Z · 2016 to 2020
$2.4M
NICHD NIH HHS R01 HD088561NICHD NIH HHS R01 HD096881
6 · The paper itself

Abstract

backgroundThe formation of a bolus of food is critical for proper feeding function, and there is substantial variation in the size and shape of a bolus prior to a swallow. Preterm infants exhibit decreased abilities to acquire and process food, but how that relates to their bolus size and shape is unknown. Here, we test two hypotheses: (1) that bolus size and shape will differ between term and preterm infants, and (2) bolus size and shape will change longitudinally through development in both term and preterm infants.

methodsTo test these hypotheses, we measured bolus size and shape in preterm and term infant pigs longitudinally through nursing using high-speed videofluoroscopy.

resultsPreterm infant pigs swallowed smaller volumes of milk. Although term infants increased the amount of milk per swallow as they aged, preterm infants did not. These changes in bolus volume were also correlated with changes in bolus shape; larger boluses became more elongate as they better filled the available anatomical space of the valleculae.

conclusionsThese results suggest that preterm birth reduces the ability of preterm pigs to increase bolus size as they grow, affecting development in this fragile population. These results highlight that studies on term infant feeding may not translate to preterm infants.

Indexed as

DeglutitionAnimalsAnimals, NewbornAnimals, SucklingFluoroscopyGestational AgePremature BirthSus scrofaTime FactorsVideo Recording

Identifiers

PMID31645052
PMCPMC7082200

What OpenQuestion holds

Textmetadata
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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.