Alcohol plus cabin pressure at higher altitude may threaten sleeping plane passengers' heart health

Jun 4 2024BMJ The combination of alcohol plus cabin pressure at cruising altitude may threaten sleeping plane passengers' heart health, particularly on long haul flights, suggests the first study of its kind, published online in the respiratory journal Thorax.

A further drop in SpO2 below this threshold is defined as hypobaric hypoxia-;or low blood oxygen level at higher altitude. Participants drank the equivalent of 2 cans of beer or 2 glasses of wine in pure vodka at 11.15 pm, and their sleep cycle, SpO2, and heart rate were monitored continuously until 4 am.

Among those in the sleep lab who drank alcohol the equivalent figures were just under 95% SpO2, and just under 77 bpm heart rate and just under 96% and just under 64 bpm for those who hadn't.

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