Evidence map›Paper›PMID 23401418›Full record

ArticlePediatric pulmonology2013

Increased lung volume in infants and toddlers at high compared to low altitude.

Conrado J Llapur, Myriam R Martínez, María Marta Caram, Federico Bonilla, Celia Cabana, Zhansheng Yu, Robert S Tepper

Open access · bronzeAbstract read
In one paragraph

Article in Pediatric pulmonology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed
0.5field-weighted citation impact, top 30% 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.

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

8 citing papers in PubMed, 14 citations in OpenAlex.

  1. Article
  2. Article
  3. Effect of estrogen receptor α on cardiopulmonary adaptation to chronic developmental hypoxia in a rat model.American journal of physiology. Lung cellular and molecular physiology · 2024
    Article
  4. Reply to TepperAmerican journal of respiratory and critical care medicine · 2024
    Article
  5. Article
  6. Article
  7. Article
  8. 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

7 authors at 5 institutions in 2 countries.

Conrado J LlapurDepartment of Pediatrics, Hospital del Niño Jesús, Tucumán, Argentina; Cátedra de Metodología de la Investigación, Tucumán, Argentina; Facultad de Medicina, Universidad Nacional de Tucumán, Tucumán, Argentina.
Myriam R Martínez
María Marta Caram
Federico Bonilla
Celia Cabana
Zhansheng Yu
Robert S Tepper
National University of Tucumán · ARIndiana University School of MedicineInstituto Superior de Investigaciones Biológicas · ARNational University of Jujuy · ARRiley Hospital for Children · US

Funding

GROWTH OF AIRWAYS AND LUNG PARENCHYMA IN NORMAL INFANTSR01HL054062 · NHLBI · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI TEPPER, ROBERT S. · 1996 to 2009
$3.1M
Lung Growth in Infants and Toddlers Residing at High AltitudeR03TW007807 · FIC · INDIANA UNIVERSITY INDIANAPOLIS · PI TEPPER, ROBERT S. · 2008 to 2010
$108k
FIC NIH HHS 1R03TW007807FIC NIH HHS R03 TW007807NHLBI NIH HHS R01 HL054062NHLBI NIH HHS R01 HL54062
6 · The paper itself

Abstract

Children and adults residing at high altitude (HA) compared to low altitude (LA) have larger lung volumes; however, it is unknown whether this response to chronic hypoxia begins early in life. Our objective was to determine whether infants and toddlers at HA have larger lung volumes compared to infants and toddlers at LA. Oxygen saturation (SaO2 ), functional residual capacity (FRC), as well as serum levels of vascular endothelial growth factor (VEGF) and erythropoietin (EPO) were measured in infants and toddlers from HA (N = 50; 3,440 m) and LA (N = 35; 440 m). There were no significant differences in somatic size for HA and LA subjects; however, HA subjects had significantly lower SaO2 (88.5% vs. 96.7%; P < 0.0001). Subjects at HA had significantly greater FRC compared to subjects at LA (group mean: 209 and 157 ml; P < 0.0001), adjusting for body length. Male infants at HA had a significantly greater FRC compared to males at LA (57 ml; P-value < 0.001); however, the increase in FRC for females at HA compared to LA was not significant (20 ml; P-value = 0.101). VEGF and EPO were significantly higher for subjects at HA compared to LA with no gender differences. In summary, infants and toddlers at HA have lower oxygen saturations, higher serum levels of VEGF and EPO, and higher FRC compared to subjects at LA; however, chronic hypoxia appears to generate a more robust response in lung growth in male compared to female infants early in life.

Indexed as

AltitudeErythropoietinFemaleFunctional Residual CapacityHumansHypoxiaInfantLungLung Volume MeasurementsMaleOximetryVascular Endothelial Growth Factor AEPO protein, humanErythropoietinVascular Endothelial Growth Factor AVEGFA protein, humanchronic hypoxiaerythropoietinfunctional residual capacityoxygen saturationvascular endothelial growth factor

Identifiers

PMID23401418
PMCPMC4304408
OpenAlexW1594539759

What OpenQuestion holds

Textmetadata
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.