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Table 3 Linear Regression

From: Left ventricular strain and strain rate by 2D speckle tracking in chronic thromboembolic pulmonary hypertension before and after pulmonary thromboendarterectomy

 

R (p-value)

 

pre PTE

post PTE

Combined

Circ strain vs PVR

0.1 (0.6)

0.28 (0.2)

0.21 (0.1)

Circ strain vs PAP mean

0.1 (0.6)

0.11 (0.5)

0.5 (0.2)

Circ strain vs CO

0.01 (0.9)

0.33 (.05)

0.17 (0.2)

Radial strain vs PVR

0.08 (0.7)

0.18 (0.3)

0.007 (0.6)

Radial strain vs PAP mean

0.16 (0.4)

0.13 (0.5)

0.03 (0.8)

Radial strain vs CO

0.09 (0.6)

0.18 (0.3)

0.14 (0.3)

Change in circ strain vs change in PVR

NA

NA

0.69 (< 0.001)

Change in circ strain vs change in PAP mean

NA

NA

0.76 (< 0.001)

Change in circ strain vs change in CO

NA

NA

0.51 (0.003)

Change in radial strain vs change in PVR

NA

NA

0.7 (< 0.001)

Change in radial strain vs change in PAP mean

NA

NA

0.7 (< 0.001)

Change in radial strain vs change in CO

NA

NA

0.45 (.02)

  1. Circ: circumferential; CO: cardiac output; PAP: pulmonary artery pressure; PTE: pulmonary thromboendarterectomy; PVR: pulmonary vascular resistance