Early brain microstructural development among preterm infants requiring caesarean section versus those delivered vaginally

Author:

Bobba Pratheek S.1,Weber Clara F.2,Malhotra Ajay1,Bahtiyar Mert O.1,Copel Joshua1,Taylor Sarah N.1,Ment Laura R.1,Payabvash Seyedmehdi1

Affiliation:

1. Yale School of Medicine

2. Lübeck University

Abstract

Abstract It is known that the rate of caesarean section (C-section) has been increasing among preterm births. However, the relationship between C-section and long-term neurological outcomes is unclear. In this study, we utilized diffusion tensor imaging (DTI) to characterize the association of delivery method with brain white matter (WM) microstructural integrity in preterm infants. We retrospectively analyzed the DTI scans and health records of preterm infants without neuroimaging abnormality on pre-discharge term-equivalent MRI. We applied both voxel-wise and tract-based analyses to evaluate the association between delivery method and DTI metrics across WM tracts while controlling for numerous covariates. We included 68 preterm infants in this study (23 delivered vaginally, 45 delivered via C-section). Voxel-wise and tract-based analyses revealed significantly lower fractional anisotropy values and significantly higher diffusivity values across major WM tracts in preterm infants delivered via C-section when compared to those delivered vaginally. These results may be partially, but not entirely, mediated by lower birth weight among infants delivered by C-section. Nevertheless, these infants may be at risk for delayed neurodevelopment and could benefit from close neurological follow up for early intervention and mitigation of adverse long-term outcomes.

Publisher

Research Square Platform LLC

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