Emergency Medicine · Pulmonology
PERC Rule calculator
Enter the published formula inputs below to calculate and interpret this score.
Clinical inputs
Result
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0
PERC negative (0 criteria)
Band: PERC negative (0 criteria)
Interpretation. PERC negative (0 criteria)
Suggested management. In a patient already judged to have low pretest probability, PERC is negative and no further PE testing is generally needed.
PERC Rule: 0 — PERC negative (0 criteria). Interpretation: PERC negative (0 criteria) What to do: In a patient already judged to have low pretest probability, PERC is negative and no further PE testing is generally needed. Inputs: Age ≥50 years: false; Pulse ≥100/min: false; Oxygen saturation <95% on room air: false; Unilateral leg swelling: false; Hemoptysis: false; Surgery or trauma within the previous 4 weeks: false; Previous DVT or pulmonary embolism: false; Exogenous estrogen use: false Source: Kline JA et al. Prospective multicenter evaluation of the pulmonary embolism rule-out criteria. J Thromb Haemost (2008)
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Clinical inputs
- Age ≥50 years
- Pulse ≥100/min
- Oxygen saturation <95% on room air
- Unilateral leg swelling
- Hemoptysis
- Surgery or trauma within the previous 4 weeks
- Previous DVT or pulmonary embolism
- Exogenous estrogen use
Primary source
Kline JA et al. Prospective multicenter evaluation of the pulmonary embolism rule-out criteria. J Thromb Haemost (2008)
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