PERC rule out criteria and Wells score for pulmonary embolism

November 23rd, 2009
by reuben in DVT/PE

PERC:

1. age < 50

2. HR < 100

3. SpO2 ? 95%

4. No unilateral leg swelling

5. No hemoptysis

6. No recent trauma or surgery

7. No prior DVT or PE

8. No hormone use

Wells:

1. Clinical signs and symptoms of DVT? (+3)

2. Pulmonary embolism is most likely diagnosis (+3)

3. HR > 100 (+1.5)

4. Immobilization of ?3 days or surgery in previous 4 weeks (+1.5)

5. Previous PE or DVT (+1.5)

6. Hemoptysis (+1)

7. Malignancy with treatment in past 6 months, or palliative (+1)

Score ?4 qualifies to rule out with D dimer [JAMA 295 (2): 172-9]

http://www.mdcalc.com/wells-criteria-for-pulmonary-embolism-pe

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Responses to “PERC rule out criteria and Wells score for pulmonary embolism”

  1. To remember the PERC rule, use HAD CLOTS. The patient must meet the following: no Hormones, Age < 50, no DVT/PE history, no Coughing blood, no Lower extremity swelling unilaterally, no O2 saturation <95, no Tachycardia ?100, no Surgery/trauma within past 28 days. [from keeping up in EM]

  2. Great memory device, use it all the time… One of those worth keeping…

    greedylobster at

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