Characteristics of the left heart structure and function in 86 term neonates with intrauterine growth restriction

LI Mo-Qi; DING Ying-Xue; CUI Hong; JIANG Li-Na; WANG Zi-Wei; LAI Yan-Ru; LI Bai-Hong; DING Wen-Hong

doi:10.7499/j.issn.1008-8830.2304045

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Chinese Journal of Contemporary Pediatrics ›› 2023, Vol. 25 ›› Issue (10) : 1016-1021. DOI: 10.7499/j.issn.1008-8830.2304045

CLINICAL RESEARCH

Characteristics of the left heart structure and function in 86 term neonates with intrauterine growth restriction

LI Mo-Qi, DING Ying-Xue, CUI Hong, JIANG Li-Na, WANG Zi-Wei, LAI Yan-Ru, LI Bai-Hong, DING Wen-Hong

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Abstract

Objective To study the left heart structure and functional characteristics of term neonates with intrauterine growth restriction (IUGR). Methods This study included 86 term neonates with IUGR admitted to the Neonatal Ward of Beijing Friendship Hospital, Capital Medical University from January 2019 to January 2022 as the IUGR group, as well as randomly selected 86 term neonates without IUGR born during the same period as the non-IUGR group. The clinical data and echocardiographic data were compared between the two groups. Results The analysis of left heart structure and function showed that compared with the non-IUGR group, the IUGR group had significantly lower left ventricular mass, left ventricular end-diastolic diameter, left ventricular end-systolic diameter, left atrial diameter, end-diastolic interventricular septal thickness, left ventricular posterior wall thickness, left ventricular end-diastolic volume, left ventricular end-systolic volume, and stroke volume (P<0.05) and significantly higher ratio of end-diastolic interventricular septal thickness to left ventricular posterior wall thickness, proportion of neonates with a mitral peak E/A ratio of ≥1, and cardiac index (P<0.05). The Spearman correlation analysis suggested that stroke volume was positively correlated with birth weight and body surface area (r_s=0.241 and 0.241 respectively; P<0.05) and that the ratio of end-diastolic interventricular septal thickness to left ventricular posterior wall thickness was negatively correlated with birth weight and body surface area (r_s=-0.229 and -0.225 respectively; P<0.05). Conclusions The left ventricular systolic function of neonates with IUGR is not significantly different from that of neonates without IUGR. However, the ventricular septum is thicker in neonates with IUGR. This change is negatively correlated with birth weight and body surface area. The left ventricular diastolic function may be impaired in neonates with IUGR.

Key words

Intrauterine growth restriction / Left heart structure / Left heart function / Echocardiography / Case-control study / Neonate

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LI Mo-Qi, DING Ying-Xue, CUI Hong, JIANG Li-Na, WANG Zi-Wei, LAI Yan-Ru, LI Bai-Hong, DING Wen-Hong. Characteristics of the left heart structure and function in 86 term neonates with intrauterine growth restriction[J]. Chinese Journal of Contemporary Pediatrics. 2023, 25(10): 1016-1021 https://doi.org/10.7499/j.issn.1008-8830.2304045

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