title: Syncope: etiology, prognosis, and relationship to age.
abstract: Syncope is a common and particularly troublesome problem in the elderly population. In a series of 146 patients admitted for syncope to an acute care hospital in Chile during a 4-year period, 2/3 (68%) were aged 65 years and older. A specific etiology could be established in 62%, and 3/4 of these were cardiovascular in origin. Diagnosis was established entirely on history, physical examination, resting ECG, and 24-hour cardiac monitoring in most cases but in some, more sophisticated measures (i.e., echocardiography, electrophysiologic studies, blood tests, EEG) were needed, and mostly to confirm clinically suspected problems. In-hospital mortality was 2.1% and mortality at the end of the approximately 2-year follow-up period was 18.1%. Mortality was higher for persons over age 65 than for younger persons (23.9% vs 2.3%), and for persons with cardiovascular syncope than for persons with other kinds of syncope (28.3% vs 8.9%). This study confirms the particular lethality of syncope in the elderly population and outlines a relatively simple strategy with which most syncope patients can be diagnosed without resorting to expensive procedures.
authors.affiliation: Department of Internal Medicine, Hospital Clinico, Pontificia Universidad Catolica de Chile, Santiago.
authors.forename: A
authors.initials: A
authors.lastname: Dougnac
authors.forename: R
authors.initials: R
authors.lastname: Gonzalez
authors.forename: A
authors.initials: A
authors.lastname: Kychenthal
authors.forename: M S
authors.initials: MS
authors.lastname: Loyola
authors.forename: R
authors.initials: R
authors.lastname: Rubio
authors.forename: L Z
authors.initials: LZ
authors.lastname: Rubenstein
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D008875:Middle Aged; D009017:Morbidity; D011379:Prognosis; D012189:Retrospective Studies; D013575:Syncope / Q000150:complications / Q000209:etiology* / Q000401:mortality