Figure 3
From: Echocardiographic assessment of pulmonary vascular resistance in pulmonary arterial hypertension
Receiver operating characteristics (ROC) curves showing a sensitivity of 93% with a specificity of 57% for a TRV/TVI rvot cutoff value of 0.14 (Panel A, area under the curve = 0.85; p = 0.005) and a sensitivity of 87% with a specificity of 57% for a TRV/TVI lvot cutoff value of 0.14 (Panel B; area under the curve = 0.82; p = 0.009) to determine PVR > 2 WU. PVR = Pulmonary vascular resistance; TRV/TVI lvot = Peak tricuspid regurgitant velocity/Left ventricular outflow tract time-velocity integral; TRV/TVI rvot = Peak tricuspid regurgitant velocity/Right ventricular outflow tract time-velocity integral; WU = Wood units.