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Early and late germinal matrix hemorrhage may have different antecedents
Insights
Early germinal matrix hemorrhage (GMH) in preterm infants is linked to labor and immediate postnatal factors. This suggests distinct risk profiles for early versus late GMH onset, impacting preterm infant care.
Area of Science:
- Neonatalogy
- Pediatric Neurology
- Perinatal Medicine
Background:
- Germinal matrix hemorrhage (GMH) is a significant concern in preterm infants.
- The timing of GMH onset may indicate different underlying risk factors.
Purpose of the Study:
- To compare the risk profiles of early-onset GMH (before 12 hours) versus late-onset GMH in preterm neonates.
- To investigate factors associated with the timing of GMH development.
Main Methods:
- Retrospective comparison of preterm infants with early GMH versus late GMH.
- Analysis of clinical data including mode of delivery, arterial blood gas (pH), and interventions like bicarbonate administration.
Main Results:
- While overall groups were similar, early GMH was associated with a history of labor (p=0.03).
- Infants with early GMH had lower initial arterial blood pH (<7.2, p=0.02) and received more bicarbonate (p<0.00001).
Conclusions:
- The risk profiles for early and late GMH are not identical.
- Intranatal and immediate postnatal factors appear to contribute to the early onset of GMH in susceptible preterm infants.
Abstract:
The time of occurrence of germinal matrix hemorrhage (GMH) in preterm babies might convey information about risk. We compared the risk profile of babies whose GMH was evident on a cranial ultrasonogram before the 12th postnatal hour (i.e., early GMH) to that of babies whose GMH did not become evident until after that time (i.e., late GMH). Overall, the two groups were similar. Babies with early GMH, however, were more likely to have been born after a course of labor (p = 0.03), for the first measurement of arterial blood pH to have been less than 7.2 (p = 0.02), and to have received bicarbonate (p = less than 0.00001). These findings lend support to the view that the risk profiles of early and late GMH are not identical, and also to the view that intranatal and immediate postnatal factors contribute to the early onset of GMH in susceptible babies.