In summary, we propose that sleep syncope (or vasovagal syncope interrupting sleep) is a clinical entity and will eventually be confirmed by opportune polysomnographic recordings in patients with suggestive histories. Patients presenting with typical vasovagal symptoms should be asked specifically about nocturnal episodes and considered, in the first instance, for ambulatory ECG monitoring. If symptomatic bradycardia is demonstrated and the episodes are relatively frequent, then sleep monitoring of EEG, ECG and blood pressure will confirm the diagnosis. Other causes of loss of consciousness should be excluded.So there you have it. No snark, just plain old science.
(Read more about regular old passing out--syncope--here.)
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