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[Current aspects of premature labor]
1Universitäts-Frauenklinik, Universität Rostock.
Insights
Preterm birth complications, like intracerebral bleeding, impact infant survival and development. Understanding infectious causes and ensuring adequate oxygenation are key to preventing severe neurological damage in premature infants.
Area of Science:
- Neonatalogy
- Perinatal Medicine
- Neuroscience
Context:
- Preterm birth affects 6-8% of newborns, posing significant risks for morbidity and mortality.
- Intracerebral bleedings are a severe complication, potentially leading to hydrocephalus and neurological deficits.
- Over 50% of premature infants may experience prenatal cerebral bleedings.
Purpose:
- To explore the pathophysiology of preterm birth complications, focusing on cerebral bleedings.
- To investigate the role of oxygen utilization and cerebral blood flow regulation in preventing brain injury.
- To understand the impact of infectious pathogenesis on prematurity.
Summary:
- Adequate oxygen utilization and regulated cerebral blood perfusion are vital for preventing periventricular leucomalacia and cerebral hemorrhages.
- Prolonged oxygen deficiency can cause endothelial swelling and reduced cerebral blood flow, potentially leading to vasoconstriction.
- Cervical infections activating interleukins (IL-1, 6, 8) stimulate prostaglandin synthesis, contributing to cervical maturity and preterm labor.
Impact:
- Improved understanding of preterm birth complications can lead to better preventative strategies.
- Identifying risk factors like oxygen deficiency and infection can guide clinical interventions.
- Insights into pathogenesis may reduce long-term neurological handicaps in surviving premature infants.
Abstract:
Six to eight percent of all newborns are born prematurely. Preterm delivery remains the most severe event regarding morbidity and mortality of the premature infants. The most serious complications in the treatment of prematurity are intracerebral bleedings that lead to progressive hydrocephalus and neurological handicaps in those newborns who survive. To our knowledge, about 50% of premature births with cerebral bleedings of stage I-II show normal or slightly decreased postnatal development. Both, a sufficient oxygen utilisation and a regulation of cerebral blood perfusion are necessary to prevent periventricular leucomalacia and cerebral bleedings with impairment of parenchymatous tissue. Endothelial swellings with decreasing blood flow into the cerebral parenchyma were found only in cases of prolonged oxygen deficiency. Vasoconstriction may produce a circulus vitiosus. However, it is important to know that more than 50% of the premature infants probably suffer from initial cerebral bleedings already in the prenatal stage. During the last 10 years the infectious pathogenesis has resulted in better understanding of pathophysiologic factors for prematurity. The local cervical activation of interleukins (IL 1, 6, 8) caused by cervical infections stimulate the prostaglandin synthesis and cervical maturity.