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

Table 2 Comparison of conventional echocardiographic parameters between normal controls and PAH patients

Variable	Control (n = 21)	PAH (n = 25)	P
PAPm (mmHg)	NA	62.83 ± 17.42	NA
TR (mmHg)	NA	93.76 ± 24.52	NA
sRV pressure (mmHg)	NA	104.80 ± 30.82	NA
Pericardial effusion	NA	7/25 (28 %)	NA
RV-FAC (%)	45.36 ± 5.60	37.24 ± 13.12	0.008
Indexed RV end-diastolic area (cm²)	9.82 (9.23,12.05)	15.88 ± 5.07	0.0001
Indexed RV end-systolic area (cm²)	5.79 ± 1.18	10.22 ± 4.69	0.0001
RV MPI	0.12 ± 0.07	0.32 (0.24,0.51)	0.0001
TAPSE (cm)	2.19 ± 0.47	1.79 ± 0.60	0.019
RV S/D ratio	0.82 (0.81,1.03)	1.30 ± 0.33	0.0001
Indexed RA area (cm²)	8.41 ± 1.32	11.87 (9.53,14,57)	0.0001
Tej (ms)	319.01 ± 33.45	273.05 ± 31.04	0.0001
LV-EI	1.02 (0.97,1.04)	1.33 (1.21,1.56)	0.0001
S’ (cm/s)	13.62 ± 1.78	11.75 ± 3.53	0.026
LV-EF	69.00 ± 4.71	71.20 ± 9.88	0.330

Data are presented as means ± SD or median (25th, 75th percentiles)
FAC fractional area change, LV-EF left ventricular ejection fraction, LV-EI left ventricular eccentricity index, MPI myocardial performance index, PAH pulmonary arterial hypertension, PAPm mean pulmonary arterial pressure, RA right atrium, RV right ventricle, S’ tricuspid annular systolic velocity, S/D ratio systolic/diastolic ratio, sRV pressure systolic right ventricular pressure, TAPSE tricuspid annular plane systolic excursion, Tej pulmonary ejection time, TR tricuspid regurgitation

ISSN: 1476-7120