Syncope and sudden death are the same thing, except in one you wake up.
Carey
B J
BJ
D000368:Aged; D016757:Death, Sudden, Cardiac / Q000209:etiology*; D015716:Electrocardiography, Ambulatory; D005260:Female; D006801:Humans; D013575:Syncope / Q000209:etiology* / Q000503:physiopathology; D014693:Ventricular Fibrillation / Q000503:physiopathology*