Table 2.

Peak circumferential, longitudinal and radial strains in RV, LV and septum.

Variables	Control (n = 17)	PAH (n = 17)	P value
Right ventricular myocardial strain
${\epsilon }_{CC}^{RV}$,%	−9.5 ± 2.0	−7.2 ± 2.9	0.011
${\epsilon }_{LL}^{RV}$,%	−15.4 ± 1.6	−10.0 ± 3.0	<0.0001
${\epsilon }_{RR}^{RV}$,%	26.1 ± 6.5	15.8 ± 7.2	<0.0001
Left ventricular myocardial strain
${\epsilon }_{CC}^{LV}$,%	−14.7 ± 1.8	−11.8 ± 2.7	0.001
${\epsilon }_{LL}^{LV}$,%	−15.5 ± 1.5	−12.5 ± 3.2	0.002
${\epsilon }_{RR}^{LV}$,%	35.9 ± 7.8	26.9 ± 12.4	0.015
Septum myocardial strain
${\epsilon }_{CC}^{Sep}$,%	−5.9 ± 1.7	−4.3 ± 1.9	0.015
${\epsilon }_{LL}^{Sep}$,%	−17.1 ± 2.0	−13.0 ± 4.1	0.001
${\epsilon }_{RR}^{Sep}$,%	14.4 ± 4.4	9.3 ± 4.9	0.004

Data are mean±SD. ${\mathit{\epsilon }}_{\mathit{C}\mathit{C}}^{\mathit{R}\mathit{V}}$: right ventricular peak circumferential strain; ${\mathit{\epsilon }}_{\mathit{L}\mathit{L}}^{\mathit{R}\mathit{V}}$: right ventricular peak longitudinal strain; ${\mathit{\epsilon }}_{\mathit{R}\mathit{R}}^{\mathit{R}\mathit{V}}$: right ventricular peak radial strain; ${\mathit{\epsilon }}_{\mathit{C}\mathit{C}}^{\mathit{L}\mathit{V}}$: left ventricular peak circumferential strain ${\mathit{\epsilon }}_{\mathit{L}\mathit{L}}^{\mathit{L}\mathit{V}}$: left ventricular peak longitudinal strain; ${\mathit{\epsilon }}_{\mathit{R}\mathit{R}}^{\mathit{L}\mathit{V}}$: left ventricular peak radial strain; ${\mathit{\epsilon }}_{\mathit{C}\mathit{C}}^{\mathit{S}\mathit{e}\mathit{p}}$: septum peak circumferential strain ${\mathit{\epsilon }}_{\mathit{L}\mathit{L}}^{\mathit{S}\mathit{e}\mathit{p}}$: septum peak longitudinal strain; ${\mathit{\epsilon }}_{\mathit{R}\mathit{R}}^{\mathit{S}\mathit{e}\mathit{p}}$: septum peak radial strain; PAH: pulmonary arterial hypertension.