Chronic Thromboembolic Pulmonary Hypertension: Likelihood Ratios

Introduction: Pulmonary Hypertension caused by chronic thromboemboli in the pulmonary arteries. See Pulmonary Embolism for diagnosis of the acute condition.

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The likelihood ratios of findings for Chronic Thromboembolic Pulmonary 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
Finding	Result	+LR	-LR
[ + ] V/Q scan	+ 0 -	9.6	0
in pulmonary hypertension patients Study: J Nucl Med. 2007 May;48(5):680-4. PMID 17475953
[ + ] CT angiography	+ 0 -	51	0.5
in pulmonary hypertension patients Study: J Nucl Med. 2007 May;48(5):680-4. PMID 17475953