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The San Francisco Syncope Rule did not accurately predict serious short-term outcome in patients with syncope
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A Birnbaum
Dr A Birnbaum, Jacobi Medical Center, Bronx, NY, USA; adrienne.birnbaum@gmail.com
STUDY QUESTION
Is the San Francisco Syncope Rule (SFSR) an accurate predictor of serious short-term outcome in patients presenting to the emergency department (ED) with syncope?
STUDY DESIGN
prospective cohort study to validate a previously derived clinical prediction rule.
ED of a university hospital in the Bronx, New York, USA.
738 patients 
21 years of age (mean age 61 y, 62% women) who presented to the ED with acute syncope or near syncope. Patients with altered mental status or loss of consciousness attributable to alcohol, illicit drugs, seizure, or head trauma were excluded. Outcome data were available for 713 patients (97%).
the SFSR consists of 5 risk factors: shortness of breath, haematocrit <30%, systolic blood pressure <90 mm Hg, history of heart failure, and abnormal electrocardiography result. Patients with 1 of these features are considered to be at high risk of a
Washington University in St Louis, St Louis, Missouri, USA
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