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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