1. Adults (skeletally mature) suspected of extremity ACS without evidence of irreversible damage (Known acute injury with fracture, crush injury, etc.)

2. Patients present with concerning physical exam (worsening limb pain and/or limb swelling)

3. Patient not requiring revascularization

*If the patients signs/symptoms change over time, re-enter the AUC tool to assess


       1. Pediatric population (skeletally immature)

       2. ACS of the foot


       1. Examples of clinical symptoms: pain out of proportion, paresthesia, pain with passive stretch, and paresis (motor symptoms)

       2. “Consider alternate diagnosis” does not exclude an ACS diagnosis

       3. “Symptoms unreliable” includes: unknown, unreliable, obtunded, intubated, or other reason for unknown history


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