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Related Experiment Videos

Maternal electrolyte and liver function changes during pregnancy at high altitude.

Nikos Kametas1, Fionnuala McAuliffe, Elisabeth Krampl

  • 1Harris Birthright Research Centre for Fetal Medicine, King's College Hospital, Denmark Hill, London SE5 9RS, UK.

Clinica Chimica Acta; International Journal of Clinical Chemistry
|February 1, 2003
PubMed
Summary

Pregnancy at high altitude (HA) alters maternal serum electrolytes, increasing osmolality, sodium, creatinine, calcium, and phosphate. Liver enzyme levels remain similar to sea level (SL) despite these changes.

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Area of Science:

  • Environmental Physiology
  • Maternal-Fetal Medicine
  • Clinical Biochemistry

Background:

  • High-altitude (HA) hypoxia causes significant physiological changes.
  • Pregnancy at HA is linked to increased risks of preeclampsia and intrauterine growth restriction.

Purpose of the Study:

  • To investigate the impact of high altitude on maternal serum electrolytes and liver enzymes.
  • To compare these markers between pregnant and non-pregnant women at high altitude versus sea level.

Main Methods:

  • A cross-sectional study involving pregnant and non-pregnant women at high altitude (4370 m) and sea level.
  • Measurement of serum electrolytes (sodium, potassium, calcium, phosphate), creatinine, bilirubin, and liver enzymes (ALP, AST, gamma-GT).

Main Results:

Related Experiment Videos

  • Pregnancy at HA showed higher serum osmolality, sodium, creatinine, and phosphate, with lower potassium compared to SL.
  • Total bilirubin was significantly higher in pregnant women at HA.
  • Liver enzyme (AST, gamma-GT, ALP) concentrations did not differ significantly between altitudes in pregnant or non-pregnant individuals.

Conclusions:

  • High-altitude pregnancy is associated with significant alterations in serum electrolytes and bilirubin.
  • Liver enzyme activity is not substantially affected by high altitude during pregnancy.