Altitude sickness screening

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Screening

• Screening for altitude sickness by [test 1] is recommended every [duration] among patients with:
  • Cold pressor test
    • Put one hand above the wrist for 1 min in ice water (4-5°C)
    • Measuring blood pressure on the opposite arm at 15 seconds intervals
    • Difference between peak and basal blood pressures determines the level of vascular reactivity

• • Heart rate variability
    • Participants resting in supine position and wear a chest strap from a heart-rate monitor watch
    • After 5 minutes rest period, heart rate is collected on a beat-by-beat basis for 10 minutes

• • Pulmonary function test
    • Measure flow-volume loop, maximal voluntary ventilation, forced expiratory volume in 1 second (FEV1), forced vital capacity (FVC) and peak expiratory flow