San Francisco Syncope Rule

A mechanism to risk stratify patients presenting with syncope
The SFSR is criticized as being unsafe given a high miss rate (pooled sensitivity of 86%). Notably, there is one patient in the original trial who was SFSR negative and subsequently died (cardiac arrest after inpatient hospital discharge).

Exclusion Criteria

• Trauma-related loss of consciousness
• Alcohol-related loss of consciousness
• Drug-related loss of consciousness
• Definite seizure
• LOC associated with an altered level of consciousness or persistent new neurologic deficits did not meet operational definition of syncope and were excluded 

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