Medical calculators

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Background

  • This is a list of all calculators on WikEM; please add as created

WikEM Calculators

PERC Rule Calculator

1. Check all of the following that are true:

Age <50yr
Pulse ox >94% (room air)
HR <100
No prior PE or DVT
No recent surgery or trauma (within prior 4wk)
No hemoptysis
No estrogen use
No unilateral leg swelling
→In patients with low suspicion for PE (best-guess pre-test probability <15%) AND all are true, only 0.9% had PE (n=7527) and it can be ruled-out without further testing (i.e. no need for d-dimer)[1][2]

Your score is 0 / 0


References

  1. ↑ Kline JA, et al. Clinical criteria to prevent unnecessary diagnostic testing in emergency department patients with suspected pulmonary embolism. J Thromb Haemost 2004; 2: 1247–55.
  2. ↑ Kline JA, et al. Prospective multicenter evaluation of the pulmonary embolism rule-out criteria. J Thromb Haemost 2008; 6: 772–80. (PMID: 18318689).
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