European Journal of Pediatrics

, Volume 154, Issue 4, pp 263–272

Physical adaptation of children to life at high altitude

  • K. de Meer
  • H. S. A. Heymans
  • W. G. Zijlstra
Review

DOI: 10.1007/BF01957359

Cite this article as:
de Meer, K., Heymans, H.S.A. & Zijlstra, W.G. Eur J Pediatr (1995) 154: 263. doi:10.1007/BF01957359

Abstract

Children permanently exposed to hypoxia at altitudes of >3000 m above sea level show a phenotypical form of adaptation. Under these environmental conditions, oxygen uptake in the lungs is enhanced by increases in ventilation, lung compliance, and pulmonary diffusion. Lung and thorax volumes in children growing up at high altitude are increased. The haemoglobin concentration in highlanders is evevated. With respect to the decreased arterial oxygen tension at high altitude, this seems a useful adaptation. Blood viscosity also increases as a result of the increase in red blood cell concentrations however, and this has potentially negative effects on the microcirculation in the tissues. The decreased partial pressure of oxygen in the lungs of highland children is associated with a higher pulmonary artery pressure. Pulmonary hypertension, high altitude pulmonary oedema, and chronic mountain sickness form part of the pathophysiology afflicting highland dwellers. Birth weight at high altitude is decreased. Decreased postnatal growth has been widely reported in populations at high altitude, particularly in early studies from the Andes. Recent studies taking into account the effects of socio-economic deprivation, suggest that long-term exposure to altitudes of 2500–3900 m is associated with a moderate reduction in linear growth in children.

Key words

Hypoxia Altitude Pulmonary hypertension Pulmonary oedema Childhood growth 

Abbreviations

caO2

anterial oxygen concentration

cHb

haemoglobin concentration

cvO2

venous oxygen concentration

2,3-DPG 2,3

diphosphoglycerate

paO2

arterial oxygen tension

pO2

partial pressure of oxygen

pCO2

partial pressure of carbon dioxide

Q

cardiac output

SaO2

arterial oxygen saturation

SvO2

mixed venous oxygen saturation

VO2

oxygen consumption

Copyright information

© Springer-Verlag 1995

Authors and Affiliations

  • K. de Meer
    • 1
  • H. S. A. Heymans
    • 2
  • W. G. Zijlstra
    • 2
  1. 1.Department of PaediatricsUniversity Children's Hospital Het Wilhelmina KinderziekenhuisUtrechtThe Netherlands
  2. 2.Department of Paediatrics/ Beatrix Children's ClinicUniversity Hospital GroningenGroningenThe Netherlands

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