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Published on: August 25, 2022
Late germinal matrix hemorrhage-like lesions in very preterm infants
Sandra Horsch1, Patrizia Kutz, Claudia Roll
1Department of Neonatology, Erasmus Medical Center/Sophia Children's Hospital, Rotterdam, Netherlands.
Abstract:
In preterm infants, the germinal matrix is a common origin of hemorrhages during the first 7 days of life. Sonographically, germinal matrix hemorrhages present as subventricular echodensities evolving into pseudocysts. Similar lesions have been reported as incidental findings also beyond 7 days of life. They may result from vasculitis and ischemic infarction, rather than hemorrhage. To assess the occurrence, time course, and significance for neurodevelopment of such late germinal matrix hemorrhage-like lesions, we reviewed serial cerebral ultrasound examinations obtained in 86 sequentially admitted infants (gestational age <32 weeks or birth weight <1500 g). Neurodevelopment was assessed at 3 years (Bayley Scales of Infant Development). Nine infants had late isolated germinal matrix hemorrhage-like lesions. Their Psychomotor Development Index scores were significantly lower than that in infants without hemorrhage. Our results suggest that late isolated germinal matrix hemorrhage-like lesions are of clinical significance because of their notable incidence and association with neurodevelopmental outcome.
Insights
Late germinal matrix hemorrhage-like lesions in preterm infants are associated with lower neurodevelopmental scores. These findings suggest clinical significance and warrant further investigation in neonatal care.
Area of Science:
- Neonatal neurology
- Pediatric neuroimaging
- Developmental pediatrics
Background:
- Germinal matrix hemorrhages commonly occur in preterm infants within the first week of life.
- Similar lesions appearing later may stem from vasculitis or ischemia, not solely hemorrhage.
- The neurodevelopmental impact of these late-onset lesions is not well understood.
Purpose of the Study:
- To evaluate the incidence and time course of late germinal matrix hemorrhage-like lesions.
- To determine the association of these lesions with neurodevelopmental outcomes at 3 years.
- To assess the clinical significance of these findings in preterm infants.
Main Methods:
- Review of serial cerebral ultrasound examinations in 86 preterm infants (gestational age <32 weeks or birth weight <1500 g).
- Neurodevelopmental assessment at 3 years using Bayley Scales of Infant Development.
- Comparison of outcomes between infants with and without late germinal matrix hemorrhage-like lesions.
Main Results:
- Nine infants presented with late isolated germinal matrix hemorrhage-like lesions.
- Infants with these lesions showed significantly lower Psychomotor Development Index scores.
- The incidence of these lesions was notable in the study cohort.
Conclusions:
- Late isolated germinal matrix hemorrhage-like lesions are clinically significant in preterm infants.
- These lesions are associated with adverse neurodevelopmental outcomes.
- Further research is warranted to understand the pathophysiology and management of these findings.
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