• Zaqueu Caetano, Alberto Borges Peixoto, Nathalie Jeanne Bravo-Valenzuela, Rosiane Mattar, and Edward Araujo Júnior.
• Universidade Federal de São Paulo, Escola Paulista de Medicina, Department of Obstetrics - São Paulo (SP), Brazil.
• Rev Assoc Med Bras (1992). 2024 Jan 1; 70 (2): e20230700e20230700.

ObjectiveThis study aimed to evaluate cardiac contractility in fetuses from pregestational diabetes mellitus pregnancies by three-dimensional ultrasound using spatiotemporal image correlation in rendering mode.MethodsA retrospective cross-sectional study was performed on 40 fetuses from nondiabetic pregnancies and 28 pregestational diabetic pregnancies between 20 and 33 weeks and 6 days. Cardiac contractility was assessed by measuring the ventricular myocardial area in diastole subtracted from the ventricular myocardial area in systole.ResultsPregestational diabetic pregnancies had a lower maternal age than nondiabetic pregnancies (26.7 vs. 39.9 years, p=0.019). Cardiac contractility in fetuses from diabetic and nondiabetic pregnancies was similar (p=0.293). A moderately positive and significant correlation was observed between gestational age and cardiac contractility (r=0.46, p=0.0004). A 1-week increase in gestational age was responsible for a 0.1386 cm2 increase in cardiac contractility.ConclusionCardiac contractility as evaluated by three-dimensional ultrasound using spatiotemporal image correlation in rendering mode showed no significant differences across fetuses with and without pregestational diabetes.

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