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Updated: Feb 15, 2026

Intracranial Pressure Monitoring In Nontraumatic Intraventricular Hemorrhage Rodent Model
Published on: February 8, 2022
Intraventricular Hemorrhage Due to Coagulopathy After Vitamin K Administration in a Preterm Infant With Maternal
Kazumichi Fujioka1, Sachiyo Fukushima1, Kosuke Nishida1
1Department of Pediatrics, Kobe University Graduate School of Medicine, Kobe, Japan.
Insights
Post-acute-phase intraventricular hemorrhage (IVH) in preterm infants is rare. This case highlights maternal Crohn disease as a potential cause of severe coagulopathy leading to late-onset IVH, even with vitamin K treatment.
Area of Science:
- Neonatal Medicine
- Hematology
- Obstetrics
Background:
- Intraventricular hemorrhage (IVH) is a significant cause of morbidity in preterm infants, often leading to poor neurodevelopmental outcomes.
- Post-acute-phase IVH, occurring more than one week after birth, is an uncommon clinical presentation.
- Neonatal hemostasis is immature and further compromised by prematurity, increasing bleeding risks.
Observation:
- A preterm infant developed intraventricular hemorrhage (IVH) beyond the typical acute phase (>1 week post-birth).
- The infant's mother had active Crohn disease during pregnancy, leading to maternal malnutrition and potential vitamin K deficiency.
- Despite vitamin K administration, the infant presented with coagulopathy and late-onset IVH.
Findings:
- Maternal Crohn disease can precipitate fetal vitamin K deficiency due to malabsorption.
- Severe coagulopathy, potentially linked to vitamin K deficiency, can be a critical factor in intraventricular hemorrhage development.
- This case demonstrates a rare instance of post-acute-phase IVH in a preterm infant linked to maternal Crohn disease and coagulopathy.
Implications:
- Highlights the importance of assessing maternal health conditions, such as Crohn disease, for fetal bleeding risks.
- Suggests that standard vitamin K prophylaxis may be insufficient in cases of severe maternal-induced coagulopathy.
- Emphasizes the need for vigilant monitoring and tailored management strategies for preterm infants at risk for late-onset IVH.
Abstract:
Intraventricular hemorrhage (IVH) is a devastating morbidity in preterm infants and can result in poor neurodevelopmental outcomes. Intraventricular hemorrhage usually occurs within 72 hours after birth; post-acute-phase IVH (>1 week after birth) is uncommon. Development of the hemostatic system in fetuses and neonates is an age-dependent evolving process, and the neonatal hemostatic system is characterized by low levels of vitamin K-dependent factors, with further reduction caused by prematurity. Importantly, a severe coagulation deficiency can be a major contributing factor of IVH. Active maternal Crohn disease (CD) during pregnancy causes malnutrition via enteral malabsorption; this may include vitamin K deficiency, resulting in fetal vitamin K deficiency. We herein describe a preterm infant who was born to a mother with CD and developed post-acute-phase IVH due to coagulopathy despite vitamin K administration.
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