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Pneumocephalus Associated with Inappropriate Valsalva Technique.
Aerospace Medicine and Human Performance
|May 19, 2019
Summary
Pneumocephalus, or intracranial air, can rarely occur from the Valsalva maneuver, especially during high-performance aircraft ascent. This case highlights the risks of improper Valsalva technique in aviators.
Area of Science:
- Aerospace Medicine
- Neurology
Background:
- Pneumocephalus (intracranial air) is typically linked to trauma or surgery.
- Rarely, it's associated with the Valsalva maneuver, with no prior reports linked to high-performance aircraft flight.
Observation:
- A 29-year-old F-22 instructor pilot experienced recurrent pneumocephalus after forceful Valsalva during high-altitude ascent.
- Symptoms included facial pressure, a head "bubbling" sensation, and severe headaches.
Findings:
- CT revealed three small sphenoid sinus defects, which were surgically repaired.
- Provocative testing showed no recurrence post-surgery, allowing the pilot to return to flight duties.
Implications:
- This case underscores the importance of recognizing rare conditions like pneumocephalus in aviators.
- Emphasizing correct Valsalva technique in aviation training is crucial for flight safety.
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