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Related Experiment Videos

Delirium at high altitude.

Buddha Basnyat1

  • 1Nepal International Clinic, Himalayan Rescue Association, Patan Hosptial, Institute of Medicine, Kathmandu, Nepal. Rishibas@wlink.com.np

High Altitude Medicine & Biology
|May 15, 2002
PubMed
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Delirium, a confusional state, was documented in a trekker at 5000m in Nepal, presenting acutely. This case highlights the importance of travel partners and insurance for Himalayan treks.

Area of Science:

  • Altitude Medicine
  • Neurology
  • Travel Health

Background:

  • High-altitude environments pose significant risks to cognitive function.
  • Acute confusional states can occur at extreme altitudes.
  • Previous documentation of delirium has been primarily at higher elevations.

Observation:

  • A 35-year-old male trekker in Nepal experienced a sudden, acute confusional state at approximately 5000 meters.
  • This presentation of delirium as an isolated symptom at this altitude is unusual.
  • The patient's condition required careful differential diagnosis.

Findings:

  • The case presents delirium as a potential manifestation at 5000m, challenging existing altitude illness profiles.
  • Differential diagnoses considered included acute mountain sickness and high altitude cerebral edema.

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  • The isolated presentation of delirium at this altitude is a novel observation.

    • Implications:

    • Clinicians should consider delirium in the differential diagnosis of altitude-related illnesses, even at 5000m.
    • This case underscores the need for vigilance regarding cognitive changes during high-altitude expeditions.
    • Emphasizes the critical importance of travel companions and comprehensive insurance for Himalayan treks.