Evaluation of the left ventricular myocardial function in preterm infants with neonatal respiratory distresssyndrome by two-dimensional speckle tracking imaging
PANG Hong, JIANG Lan, LIAO Jianyi, et al. Evaluation of the left ventricular myocardial function in preterm infants with neonatal respiratory distresssyndrome by two-dimensional speckle tracking imaging[J]. Journal of Clinical Ultrasound in Medicine, 2021,23(2):96-100.
PANG Hong, JIANG Lan, LIAO Jianyi, et al. Evaluation of the left ventricular myocardial function in preterm infants with neonatal respiratory distresssyndrome by two-dimensional speckle tracking imaging[J]. Journal of Clinical Ultrasound in Medicine, 2021,23(2):96-100. DOI: 10.16245/j.cnki.issn1008-6978.2021.02.007.
Objective To evaluate left ventricular myocardial function in neonatal respiratory distress syndrome(NRDS) by two-dimensional speckle tracking imaging(2 D-STI).Methods Forty-one newborns were selected in our hospital
including 20 NRDS premature infants(NRDS premature group)
10 cases of non-NRDS premature infants(non-NRDS premature group)
and 11 cases of full-term normal newborns(full-term control group).2 D-STI were used to obtain the global longitudinal peak strain(LV-GLPS) and wall strain measurements of the left ventricle in the three groups.Left ventricular ejection fraction(LVEF)
peak values of early and late diastolic blood flow velocity of mitral valve(MV-E
MV-A) and tissue velocity of mitral annulus during systole(MV-S’)
mitral annular plane systolic excusion(M APSE) and left ventricular Tei index of the three group were collected and compared.Results MV-S’
MAPSE and left ventricular Tei index were significant difference among three groups(all P<0.05).Compared with non-NRDS premature group and full-term control group
MV-S’ and MAPSE were decreased and left ventricular Tei index was increased in NRDS premature group
the differences were statistically significant(all P<0.05).Except LV-GLPS-A4 C and posterior wall
the longitudinal peak strain of left ventricle in each group were significant difference
the differences were statistically significant(all P<0.05).Except LV-GLPS-A4 C
inferior wall and posterior wall strain
the longitudinal peak strain of left ventricle in NRDS premature group were lower than that in non-NRDS premature group and full-term control group
the differences were statistically significant(all P<0.05).Except inferior wall strain in non-NRDS premature group and full-term control group
there was no significant difference of rest strain parameters between the two groups.Conclusion 2.D-STI technology can early detect the left ventricular myocardial damage of premature infants with ARDS.The left ventricular myocardial function of premature infants with NRDS is lower than that of non-NRDS and normal neonates.