Clinical Context
We think this might be relevant to the clinical guidance for PERC Rule — Pulmonary Embolism Rule-Out Criteria.
Clinical Context
We think this might be relevant to the clinical guidance for PERC Rule — Pulmonary Embolism Rule-Out Criteria.
Clinical Context
We think this might be relevant to the clinical guidance for PERC Rule — Pulmonary Embolism Rule-Out Criteria.
The "Zero" Score Search: Only for very low pretest probability (< 15% gestalt). If ALL 8 answers are "Yes," PE is safely ruled out without a D-dimer.
Age < 50 years
Heart Rate < 100 bpm
SpO2 ≥ 95% on room air
No unilateral leg swelling
No hemoptysis
No recent surgery or trauma (< 4 weeks)
No prior PE or DVT
No oral hormone use
Verified
Last Review: 2026
Last Comprehensive Review: 2026
