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Good Positive and Negative Likelihood Ratios

Pulmonary Arterial Hypertension: Likelihood Ratios

Introduction: Pulmonary hypertension that is a primary problem of the pulmonary arteries, also known as primary or idiopathic pulmonary hypertension. It is defined as:

  • Mean pulmonary artery pressure (mPAP) >25 mmHg at rest
  • Pulmonary capillary wedge pressure (PCWP) <15 mmHg
  • (Often instead of mPAP, RVSP is used with a cutoff of 40mmHg being suggestive but not diagnostic of PAH.)

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    Tags: Pulmonary Vascular Tag this Diagnosis.

    The likelihood ratios of findings for Pulmonary Arterial Hypertension are listed below. See the left navigation bar to change the display.

    Pre-Test Probability (Prevalence): %. Post-Test Probability (Predictive Value): %. Switch to display mode.
    **Note that calculating probabilities from more than one finding is inherently inaccurate because findings are not independent. (For example, using two positive findings that share a common pathogenesis is likely to overestimate the true probability.)
    Good Positive and Negative Likelihood Ratios
    FindingResult +LR-LR
    [ + ] Pulmonary Capillary Wedge Pressure + 0 - 7.10.4