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. Author manuscript; available in PMC: 2014 Sep 1.
Published in final edited form as: Circ Heart Fail. 2013 Jun 27;6(5):906–912. doi: 10.1161/CIRCHEARTFAILURE.112.000091

Figure 2. The distribution of tests used to diagnose pulmonary hypertension (PH) etiology and severity.

Figure 2

The electronic medical record for each patient with echocardiographically assessed moderate or severe PH (N=340) was analyzed to identify patients undergoing specific test(s) that are important for establishing PH disease etiology as well as disease severity. PFT, pulmonary function test (spirometry only); DLCO, lung diffusion capacity to carbon monoxide; RHC, right heart catheterization; CT-A, thoracic computed tomographic angiography; V/Q, ventilation/perfusion.