Abstract
Infants of diabetic mothers (IDMs) with hypertrophic cardiomyopathy are recognized to have impaired myocardial performance, but less is known about ventricular function in IDMs without hypertrophy. We hypothesized that in asymptomatic newborns with normal two-dimensional echocardiographic evaluations, pulsed wave tissue Doppler imaging (TDI) would suggest a subclinical decrease in the cardiac function of IDMs compared to infants of non-diabetics (nIDMs). This is a retrospective cohort study of asymptomatic neonates ≥36 weeks gestation, at 0–7 days of life, with normal standard echocardiograms. Systolic (S’), early diastolic (E’), and late diastolic (A’) TDI velocities were measured at the mitral valve (MV) annulus, basal interventricular septum (IVS), and tricuspid valve (TV) annulus, and averaged from three consecutive cardiac cycles. Demographic, perinatal, and echocardiographic variables were compared between IDM and nIDM groups. Of 631 subjects, 75 IDMs were identified. The mean gestational age of the entire cohort was 39.33 weeks (±1.26), birth weight 3.44 kg (±0.56), and body surface area (BSA) 0.21 m2 (±0.02). IDMs had significantly greater birth weight and BSA, lower gestational age, older maternal age, and higher incidence of maternal obesity and hypertension than nIDMs (p < 0.001). On multivariable analysis, IDMs had significantly lower S’ (p ≤ 0.03) and E’ (p < 0.001) velocities, and higher E/E’ ratios (p < 0.001) at the MV, IVS, and TV than nIDMs. In asymptomatic newborn IDMs without cardiac hypertrophy, pulsed wave TDI suggests a subclinical decrease in systolic and diastolic myocardial function compared to nIDMs.
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Jenny E. Zablah declares that she has no conflict of interest. Dorota Gruber declares that she has no conflict of interest. Guillaume Stoffels declares that he has no conflict of interest. Estefania G. Cabezas declares that she has no conflict of interest. Denise A. Hayes declares that she has no conflict of interest.
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This article does not contain any studies with animals performed by any of the authors. All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
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Zablah, J.E., Gruber, D., Stoffels, G. et al. Subclinical Decrease in Myocardial Function in Asymptomatic Infants of Diabetic Mothers: A Tissue Doppler Study. Pediatr Cardiol 38, 801–806 (2017). https://doi.org/10.1007/s00246-017-1584-y
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DOI: https://doi.org/10.1007/s00246-017-1584-y