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Syncope Patients with syncope that are considered to be relatively low risk for complications clinically (i.e. those patients that are not clear-cut admissions) should be evaluated for the 5 CHESS criteria (from the San Francisco Syncope Rules). If they meet none of those criteria, then they are considered to be at very low risk for short-term adverse outcomes and they can be discharged for outpatient follow-up. If they do have any CHESS criteria, they are considered to be at higher risk and admission should be strongly considered. CHESS criteria: history of CHF, hematocrit < 30, ECG abnormalities, shortness of breath, presenting systolic pressure < 90.