Which nonpharmacologic approach is part of motion sickness prophylaxis for aircrew?

• A. Nonpharmacologic measures such as keeping horizon, proper seating, and hydration
• B. High-dose analgesics
• C. Stimulating beverages
• D. High-altitude exposure without acclimatization

Answer: (A)

Motion sickness prophylaxis in aircrew often starts with strategies that reduce the brain’s sensory conflict between what the eyes see and what the vestibular system feels. Keeping the horizon in view provides stable visual input that matches the motion the inner ear detects, helping the brain fuse signals more consistently. Choosing a seating position that minimizes excessive sway or unpredictable motion gives a steadier frame of reference. Staying hydrated supports overall circulatory stability and helps prevent light-headedness that can worsen dizziness. Together, these nonpharmacologic measures address how the body perceives motion, making them a practical first line of defense without medications.

High-dose analgesics don’t target motion-sickness physiology and bring unnecessary risks. Stimulating beverages can actually aggravate symptoms by altering hydration status and nervous system activity. High-altitude exposure without acclimatization provokes a different physiological issue and isn’t a preventive measure for motion sickness.