Figure 5

RV end-systolic wall stress (A) before and after PEA in the 13 CTEPH patients and the 8 patients with normal right-sided pressures. Bar plots show the mean and the standard error of the mean, before PEA (open bars), and after PEA (closed bars). (B) Linear regression between the decrease in left-to-right (L-R) delay in time to peak of circumferential shortening as dependent variable and the decrease in right ventricular (RV) end-systolic wall stress.