Clinical Report: Bimodal Ultrasound Evaluation of Cerebral Blood Flow in Preterm Infants

Overview

This study evaluates the use of bedside bimodal ultrasound to assess cerebral circulation in preterm infants, focusing on the impact of maternal immunotherapy on cerebral hemodynamics and the risk of intraventricular hemorrhage (IVH).

Background

Intraventricular hemorrhage (IVH) is a significant complication in preterm infants, associated with high mortality and long-term neurodevelopmental issues. Understanding the factors influencing cerebral hemodynamics, including maternal health conditions like recurrent spontaneous abortion (RSA) and immunotherapy, is crucial for improving neonatal outcomes. This study explores the potential of bimodal ultrasound as a noninvasive tool for early assessment of cerebral blood flow in this vulnerable population.

Data Highlights

Key Findings

• PI-CV and ONSD decreased during the first postnatal week in both groups.
• Significant time effects and group × time interactions were observed for PI-CV and ONSD (P < 0.001).
• Maternal immunotherapy status was associated with faster declines in PI-CV and ONSD.
• ONSDmax and PI-CV at 24 hours were linked to clinically significant IVH after adjustment.
• The bimodal model showed an AUC of 0.759, indicating moderate predictive ability for IVH.
• Findings do not establish a direct protective effect of maternal immunotherapy on IVH risk.

Clinical Implications

The findings indicate that bedside bimodal ultrasound can be a tool for monitoring cerebral hemodynamics in preterm infants.

Conclusion

Bedside bimodal ultrasound offers a feasible method for assessing early cerebral hemodynamics in preterm infants. Further validation and long-term studies are necessary to confirm these findings.

Related Resources & Content

1. Frontiers in Pediatrics, 2026 -- Quantitative Ultra-Micro Angiography Assessment of Dynamic Cerebral Microperfusion Patterns by Gestational Age in Neonates: A Prospective Observational Cohort Study
2. Frontiers in Pediatrics, 2026 -- Hemodynamic evaluation following ductal closure and association with IVH in premature infants born at 22–23weeks gestation
3. Frontiers in Pediatrics, 2026 -- Predicting severe intraventricular hemorrhage in very preterm and/or very low birth weight infants: a nomogram approach
4. Frontiers in Pediatrics, 2026 -- Multisystem Hemorrhage in a Very Preterm Infant Born to a Mother with Immune Thrombocytopenia: A Case Report and Literature Review
5. European recommendations on practices in pediatric neuroradiology: consensus document from the European Society of Neuroradiology (ESNR), European Society of Paediatric Radiology (ESPR) and European Union of Medical Specialists Division of Neuroradiology (UEMS), Pediatric Radiology, Springer Nature
6. Diagnostic and predictive value of Doppler ultrasound for evaluation of the brain circulation in preterm infants: a systematic review - PMC
7. Recurrent pregnancy loss: a committee opinion (2026) | American Society for Reproductive Medicine | ASRM
8. European recommendations on practices in pediatric neuroradiology: consensus document from the European Society of Neuroradiology (ESNR), European Society of Paediatric Radiology (ESPR) and European Union of Medical Specialists Division of Neuroradiology (UEMS) | Pediatric Radiology | Springer Nature Link
9. Diagnostic and predictive value of Doppler ultrasound for evaluation of the brain circulation in preterm infants: a systematic review - PMC
10. Recurrent pregnancy loss: a committee opinion (2026) | American Society for Reproductive Medicine | ASRM