| name | emergency-decision-rules |
| description | Use when applying validated ED decision rules to reduce unnecessary imaging or testing. Includes Ottawa ankle/knee rules, Canadian C-Spine rule, and the PERC rule. |
Emergency Decision Rules
Description
This skill provides structured guidance for common ED decision rules used to reduce unnecessary imaging or testing while maintaining safety. It supports accurate input collection, rule application, and risk interpretation.
Quick Reference
| Tool | Use |
|---|
| Ottawa Ankle Rules | Decide ankle or foot radiographs after ankle injury |
| Ottawa Knee Rules | Decide knee radiographs after acute knee injury |
| Canadian C-Spine Rule | Decide cervical spine imaging in alert trauma patients |
| PERC Rule | Exclude PE in low-risk patients without D-dimer |
Interactive Mode (Lightweight)
- Confirm clinical context and intended rule.
- Collect required inputs and findings.
- Validate inclusion and exclusion criteria.
- Apply rule and present result.
- Provide safety caveats and next-step guidance.
Decision Rules
Safety and Limitations
- Support tool only; not diagnostic or prescriptive.
- Use local policies and clinical judgment.
- Validate eligibility before applying each rule.
References
See: references/emergency-decision-rules-sources.md
