Heightened neurological risk at high altitude

AIR travel can trigger neurological events, including among patients with a history of carotid stenosis, researchers warn.

Their study analysed 77 neurological cases among passengers experiencing either an in-flight medical emergency, or one that occurred after landing, who were transported from a Madrid airport to hospital over almost two years.

The patients were usually middle-aged men (76.6% male, mean age of 45.9 years).

Symptom onset occurred during the flight in a minority of cases (41.3%). Most fell ill soon after their plane had landed.

Just over one-half had a seizure (39 patients), almost

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