Pulmonary Embolism Rule out Criteria – PERC Score

This tool can be used to rule out pulmonary embolism if the pre-test probability of PE is low.  A Wells PE Score of 1 or 0 is one way to meet this requirement (1.3% probability).  [link url="../../blood-lymph/wells-pe/" memo="Wells PE Score calculator"]
Findings: (All answers must be 'True' to Rule out PE)
[select name="age" value="false=0|true=1"] <-- Age < 50?
[select name="HR" value="false=0|true=1"] <-- HR < 100?
[select name="O2" value="false=0|true=1"] <-- O2 Sat on Room Air >94%?
[select name="prior" value="false=0|true=1"] <-- No Prior History of DVT/PE?
[select name="trauma" value="false=0|true=1"] <-- No Recent Trauma or Surgery?
[select name="hemoptysis" value="false=0|true=1"] <-- No Hemoptysis?
[select name="estrogen" value="false=0|true=1"] <-- No Exogenous Estrogen?
[select name="dvt" value="false=0|true=1"] <-- No Clinical Signs Suggesting DVT?
Score --> [calc value="score=(age)+(HR)+(O2)+(prior)+(trauma)+(hemoptysis)+(estrogen)+(dvt)" memo="score"]
Interpretation: [calc value="score=(age)+(HR)+(O2)+(prior)+(trauma)+(hemoptysis)+(estrogen)+(dvt);score>7?'1.8% chance of pulmonary embolism *if* pretest probability was low (Wells PE score of 1 or less)':'Pulmonary embolism is not ruled out'" memo="Interpretation"]
[checkbox memo="display/hide references" name="footnotes" value=""][conditional field="footnotes" condition="(footnotes).is('')"]
reference:  [link url="http://www.ncbi.nlm.nih.gov/pubmed/15304025" memo="#1"] Kline (2004) J Thromb Haemost. 2:1247-55.
[/conditional]
This tool can be used to rule out pulmonary embolism if the pre-test probability of PE is low. A Wells PE Score of 1 or 0 is one way to meet this requirement (1.3% probability). Wells PE Score calculator
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: Interpretationscore=(age)+(HR)+(O2)+(prior)+(trauma)+(hemoptysis)+(estrogen)+(dvt);score>7?'1.8% chance of pulmonary embolism *if* pretest probability was low (Wells PE score of 1 or less)':'Pulmonary embolism is not ruled out'
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Result - Copy and paste this output:

Sandbox Metrics: Structured Data Index 1, 14 form elements, 93 boilerplate words, 1 checkboxes, 8 drop downs, 2 links, 2 calculations, 1 conditionals, 9 total clicks
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