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Acute high-altitude sickness.

Andrew M Luks1, Erik R Swenson2,3, Peter Bärtsch4

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Ascending to high altitudes (≥2500m) can cause acute mountain sickness, high-altitude cerebral edema, and high-altitude pulmonary edema. This review details their features, causes, and prevention strategies.

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Area of Science:

  • Environmental Medicine
  • Altitude Physiology

Background:

  • Ascent to altitudes ≥2500m poses risks for acute altitude illness.
  • Three main forms exist: acute mountain sickness, high-altitude cerebral edema, and high-altitude pulmonary edema.

Purpose of the Study:

  • To provide detailed information on acute altitude illnesses.
  • To review clinical features, epidemiology, and pathophysiology.
  • To describe current prevention and treatment strategies.

Main Methods:

  • Literature review of clinical features, epidemiology, and pathophysiology.
  • Compilation of current pharmacological and nonpharmacological prevention and treatment approaches.

Main Results:

  • Acute mountain sickness presents with headache, dizziness, and nausea.
  • High-altitude cerebral edema is characterized by ataxia and altered consciousness.
  • High-altitude pulmonary edema involves noncardiogenic pulmonary edema due to hypoxic vasoconstriction.

Conclusions:

  • Prompt recognition and treatment are crucial for potentially fatal altitude illnesses.
  • Understanding pathophysiology aids in developing effective prevention and treatment strategies.
  • Both pharmacological and nonpharmacological methods are available for managing altitude-related illnesses.