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Table 3 Comparison of longitudinal strain indices in different RV segments between control group and PAH children

From: Deformation pattern and predictive value of right ventricular longitudinal strain in children with pulmonary arterial hypertension

Variable

Control group (n = 21)

PAH children (n = 25)

p

RV-LpsS (%)

   

RV free wall

−24.72 ± 3.48

−15.60 ± 3.40

0.0001

 Basal RV free wall

−28.19 ± 5.47

−12.80 ± 4.26

0.0001

 Mid RV free wall

−26.00 ± 4.45

−17.52 ± 5.20

0.0001

 Apical RV free wall

−20.00 ± 7.58

−16.48 ± 4.96

0.077

Apex

−23.66 ± 5.95

−17.76 ± 4.47

0.0001

IVS

   

 Apical IVS

−27.33 ± 5.59

−19.00 (−20.50,−16.00)

0.0001

 Mid IVS

−24.38 ± 5.34

−17.36 ± 5.70

0.0001

 Basal IVS

−17.00 ± 4.18

NA

NA

RV-LpsSR(s −1 )

   

RV free wall

−1.44 ± 0.09

−1.09 ± 0.15

0.0001

 Basal RV free wall

−1.61 ± 0.19

−1.00 ± 0.15

0.0001

 Mid RV free wall

−1.50 ± 0.17

−1.23 ± 0.31

0.001

 Apical RV free wall

−1.21 ± 0.18

−1.04 ± 0.16

0.002

Apex

−1.28 ± 0.26

−1.09 ± 0.19

0.009

IVS

   

 Apical IVS

−1.30 (−1.60,−1.22)

−1.21 ± 0.26

0.016

 Mid IVS

−1.45 ± 0.32

−1.11 ± 0.30

0.001

 Basal IVS

−1.14 ± 0.24

NA

NA

  1. Data are presented as means ± SD or median (25th, 75th percentiles)
  2. c control, IVS interventricular septum, LpsS longitudinal peak systolic strain, LpsSR longitudinal peak systolic strain rate, NA no available, PAH pulmonary arterial hypertension, RV right ventricle