Pulmonology Book

http://www.fpnotebook.com/

Pulmonary Embolism Pretest Probability

Aka: Pulmonary Embolism Pretest Probability, Wells Clinical Prediction Rule for PE
  1. See Also
    1. Pulmonary Embolism
  2. Criteria
    1. PE more likely than alternatives: 3.0 points
    2. Deep Vein Thrombosis (DVT) suspected: 3.0 points
    3. Tachycardia (pulse >100 beats per minute): 1.5 points
    4. Surgery or immobilization in last 4 weeks: 1.5 points
    5. Prior DVT or Pulmonary Embolism: 1.5 points
    6. Hemoptysis: 1.0 points
    7. Active malignancy: 1.0 points
  3. Interpretation
    1. Score 0-2 points: Low PE Probability (3.6% risk)
      1. Positive Likelihood Ratio: 0.1
      2. Negative Likelihood Ratio: 7.6
    2. Score 3-6 points: Moderate PE Probability (20.5% risk)
      1. Positive Likelihood Ratio: 1.3
      2. Negative Likelihood Ratio: 0.7
    3. Score >6 points: High PE Probability (66.7% risk)
      1. Positive Likelihood Ratio: 6.8
      2. Negative Likelihood Ratio: 1.8
  4. Interpretation: Simplified
    1. Score 4 or less: Unlikely
    2. Score >4: Likely
    3. D-Dimer negative with "unlikely" score safely excludes Pulmonary Embolism
  5. References
    1. Tamariz (2004) Am J Med 117(9): 676-84 [PubMed]
    2. Wells (2000) Thromb Haemost 83:416-20 [PubMed]
    3. Wells (2001) Ann Intern Med 135(2): 98-107 [PubMed]

You are currently viewing the original 'fpnotebook.com\legacy' version of this website. Internet Explorer 8.0 and older will automatically be redirected to this legacy version.

If you are using a modern web browser, you may instead navigate to the newer desktop version of fpnotebook. Another, mobile version is also available which should function on both newer and older web browsers.

Please Contact Me as you run across problems with any of these versions on the website.

Navigation Tree