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Related Experiment Videos

[Who gets altitude sickness?].

P Bärtsch1

  • 1Forschungsinstitut, Eidgenössische Sportschule Magglingen.

Schweizerische Medizinische Wochenschrift
|February 29, 1992
PubMed
Summary
This summary is machine-generated.

Preventing altitude sickness like acute mountain sickness (AMS) and high altitude pulmonary edema (HAPE) involves managing ascent speed. Individual susceptibility, influenced by factors like low hypoxic ventilatory drive and pulmonary vasoconstriction, plays a key role.

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Area of Science:

  • Altitude sickness research
  • Pulmonary medicine
  • Environmental physiology

Background:

  • Acute mountain sickness (AMS) and high altitude pulmonary edema (HAPE) are significant risks during high-altitude exposure.
  • Ascent rate and altitude level are critical environmental factors influencing their development.
  • Individual physiological responses, including hypoxic ventilatory drive and pulmonary vascular reactivity, contribute to susceptibility.

Purpose of the Study:

  • To identify key factors predisposing individuals to AMS and HAPE.
  • To explore the role of individual physiological characteristics in altitude sickness pathogenesis.
  • To evaluate preventive strategies for AMS and HAPE.

Main Methods:

  • Review of factors influencing AMS and HAPE occurrence.

Related Experiment Videos

  • Analysis of individual susceptibility related to hypoxic ventilatory drive.
  • Examination of pulmonary vasoconstriction in susceptible individuals.
  • Assessment of nifedipine's effect on pulmonary artery pressure.
  • Evaluation of ascent speed adjustment as a preventive measure.

    • Main Results:

    • Altitude level and ascent speed are modifiable determinants of AMS and HAPE.
    • A low hypoxic ventilatory drive is a constitutional risk factor for both conditions.
    • Susceptible individuals exhibit increased hypoxic pulmonary vasoconstriction.
    • Nifedipine can treat or prevent HAPE by reducing pulmonary artery pressure.
    • Behavioral adjustments, specifically modifying ascent speed, are effective preventive strategies.

    Conclusions:

    • AMS and HAPE are influenced by environmental factors and individual physiology.
    • Understanding individual susceptibility, particularly pulmonary vascular response, is crucial for prevention.
    • Non-pharmacological prevention, primarily through controlled ascent, is effective for most individuals.
    • Pharmacological interventions like nifedipine offer treatment options for HAPE.