[Syncope. Harmless fainting or preliminary sign of acute cardiac death?].
D001919:Bradycardia / Q000175:diagnosis* / Q000209:etiology; D016757:Death, Sudden, Cardiac / Q000209:etiology / Q000517:prevention & control*; D003937:Diagnosis, Differential; D004562:Electrocardiography; D006801:Humans; D012307:Risk Factors; D013575:Syncope / Q000209:etiology*; D013610:Tachycardia / Q000175:diagnosis* / Q000209:etiology