San Francisco Syncope Rule (CHESS)
San Francisco Syncope Rule (CHESS) - a deterministic tool in Sophie Well's Clinical Scoring & Risk group.
Open the San Francisco Syncope Rule (CHESS) → Runs in your browser. No signup, no tracking.
What this is
San Francisco Syncope Rule (CHESS) is one of 230 deterministic tools in Sophie Well's Clinical Scoring & Risk group. San Francisco Syncope Rule (CHESS) - a deterministic tool in Sophie Well's Clinical Scoring & Risk group.
When to use it
Use this tool when you need a quick, citable reference. Every calculation runs entirely in your browser - no inputs leave your device, no account is required, no AI is involved. The site enforces a strict Content Security Policy and ships no analytics or third-party CDN.
References
Quinn JV, et al. Ann Emerg Med. 2004;43(2):224-232 (San Francisco Syncope Rule, CHESS): CHF, Hematocrit <30%, ECG abnormal, Shortness of breath, SBP <90.
Worked example: Any CHESS criterion present: high risk for a serious 7-day outcome.
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