PERC Rule-Out Algorithm for Diagnosis of Pulmonary Embolism • Age ≥50 • HR ≥100 • O₂ sat on room air <95% • Unilateral leg swelling • Hemoptysis • Recent surgery or trauma • Surgery or trauma ≤4 weeks ago • Prior PE or DVT • Hormone use #PERC #Ruleout #Algorithm #Diagnosis #Pulmonary #Embolism #Criteria #PE
