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PERC Score to rule out pulmonary embolism. Only with low pre-test probability!

Findings: (All answers must be 'True' to Rule out PE)
[select name="age" value="true=0|false=1"] <-- Age < 50?
[select name="HR" value="true=0|false=1"] <-- HR < 100?
[select name="O2" value="true=0|false=1"] <-- O2 Sat on Room Air >94%?
[select name="prior" value="true=0|false=1"] <-- No Prior History of DVT/PE?
[select name="trauma" value="true=0|false=1"] <-- No Recent Trauma or Surgery?
[select name="hemoptysis" value="true=0|false=1"] <-- No Hemoptysis?
[select name="estrogen" value="true=0|false=1"] <-- No Exogenous Estrogen?
[select name="dvt" value="true=0|false=1"] <-- No Clinical Signs Suggesting DVT?
Score --> [calc value="score=(age)+(HR)+(O2)+(prior)+(trauma)+(hemoptysis)+(estrogen)+(dvt)" memo="score"]

Interpretation: If score <1, then 1.8% chance of pulmonary embolism *if* pretest probability was low, otherwise pulmonary embolism is not ruled out
PERC Score to rule out pulmonary embolism. Only with low pre-test probability!

Findings: (All answers must be 'True' to Rule out PE)
<-- Age < 50?
<-- HR < 100?
<-- O2 Sat on Room Air >94%?
<-- No Prior History of DVT/PE?
<-- No Recent Trauma or Surgery?
<-- No Hemoptysis?
<-- No Exogenous Estrogen?
<-- No Clinical Signs Suggesting DVT?
Score --> scorescore=(age)+(HR)+(O2)+(prior)+(trauma)+(hemoptysis)+(estrogen)+(dvt)

Interpretation: If score <1, then 1.8% chance of pulmonary embolism *if* pretest probability was low, otherwise pulmonary embolism is not ruled out
Result - Copy and paste this output: