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Longitudinal Annular Systolic Displacement Compared to Global Strain in Normal Fetal Hearts and Those With Cardiac Abnormalities
Author(s) -
DeVore Greggory R.,
Klas Berthold,
Satou Gary,
Sklansky Mark
Publication year - 2018
Publication title -
journal of ultrasound in medicine
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 91
eISSN - 1550-9613
pISSN - 0278-4297
DOI - 10.1002/jum.14454
Subject(s) - medicine , ventricle , displacement (psychology) , cardiology , diastole , fractional shortening , systole , fetus , longitudinal study , basal (medicine) , speckle tracking echocardiography , apex (geometry) , fetal echocardiography , anatomy , ejection fraction , pregnancy , heart failure , blood pressure , prenatal diagnosis , pathology , psychology , biology , insulin , psychotherapist , genetics
Objectives The purpose of this study was to compare a new technique that measures the midventricular basal‐apical longitudinal diastolic and systolic lengths, computes the longitudinal displacement fractional shortening, and compares it to global strain. Methods Two hundred control fetuses were examined between 20 and 40 weeks' gestation, in whom the longitudinal displacement fractional shortening was computed from end‐diastolic and end‐systolic lengths measured from the apex to the mid portion of the distance between the level of the basal lateral and septal walls using 2‐dimnsional speckle tracking. In addition, global strain was computed using speckle tracking. A correlation analysis was used to compare the longitudinal displacement fractional shortening to global strain. The longitudinal displacement fractional shortening of the right ventricle (RV) and left ventricle (LV) was measured in 10 fetuses with heart abnormalities. Results The longitudinal displacement fractional shortening for the RV (mean ± SD, 22.94% ± 4.73%) and LV (21.05% ± 4.21%) was independent of gestational age and other biometric growth parameters, as was global strain (RV, –22.7% ± 4.07%); LV, –22.93% ± 3.52%). The RV longitudinal displacement fractional shortening was greater than that of the LV ( P < .024). The correlations between the longitudinal displacement fractional shortening and global strain were 0.95 for the RV and 0.97 for the LV. Comparing the longitudinal displacement fractional shortening and global strain in fetuses with abnormal cardiac findings showed concordant findings in 9 of 10 fetuses. Conclusions The RV and LV longitudinal displacement fractional shortening can be computed from 2‐dimensional images of the 4‐chamber view and correlated with global strain. The longitudinal displacement fractional shortening was significantly greater for the RV than the LV and was abnormal in fetuses with RV and LV cardiac abnormalities.