. Author manuscript; available in PMC: 2018 Jul 1.

Published in final edited form as: J Am Soc Echocardiogr. 2017 Apr 19;30(7):685–698.e1. doi: 10.1016/j.echo.2017.03.003

Table 6.

Regional ventricular deformation patterns in preterm infants at one year corrected age

	Base	Mid-ventricle	Apex	P -value
Healthy uncomplicated Preterm Infants^*
RV SLS (%)	−23.1 ± 1.6	−24.2 ± 2.1	−26.7 ± 1.9	< 0.01
LV SLS (%)	−21.2 ± 2.1	−19.4 ± 2.1	−18.1 ± 1.3	< 0.01
IVS SLS (%)	−19.1 ± 1.5	−18.9 ± 2.0	−17.9 ± 2.3	< 0.01
Preterm Infants with BPD and/or PH
RV SLS (%)	−20.1 ± 1.4	−23.2 ± 1.3	−24.7 ± 2.1	0.01
LV SLS (%)	−20.9 ± 2.2	−19.2 ± 1.1	−18.5 ± 2.1	< 0.01
IVS SLS (%)^**	−16.1 ± 1.8	−17.9 ± 2.1	−18.1 ± 1.9	< 0.01

Data are presented as mean ± SD.

RV, right ventricle; LV, left ventricle; IVS, interventricular septum

SLS, segmental longitudinal strain

BPD, bronchopulmonary dysplasia; PDA, patent ductus arteriosus,

Healthy uncomplicated, defined as infants without bronchopulmonary dysplasia, echocardiographic signs of pulmonary hypertension at 32 or 36 weeks PMA, and/or a hemodynamically significant patent ductus arteriosus at Day 5–7 or any size PDA at 32 or 36 weeks PMA.

^**

IVS SLS with preterm infants with BPD and/or PH remains in an apex-to-base pattern (highest to lowers), reflective of RV regional gradient.