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[Haemostasis in premature and newborn babies (author's transl)]
Insights
Hemostasis mechanisms begin developing in early pregnancy, with full maturation continuing through the first year of life. Despite some differences, newborn babies demonstrate well-functioning hemostasis at birth.
Area of Science:
- Developmental biology
- Hematology
- Physiology
Context:
- Hemostasis, the process of blood clotting, begins developing early in gestation.
- Key components like vessel wall contractility, platelets, and coagulation/fibrinolysis factors emerge by the tenth week of gestational age.
- Hemostasis development continues postnatally, extending through the first year of life.
Purpose:
- To investigate the developmental timeline and characteristics of hemostasis during fetal and early postnatal life.
- To identify specific differences in hemostatic mechanisms between newborns and older individuals.
- To assess the overall functional capacity of hemostasis in mature newborns.
Summary:
- Hemostasis mechanisms initiate early in gestation, with significant development observed by the tenth week.
- Newborns exhibit distinct hemostatic profiles, including impaired platelet function and reduced coagulation factor activity compared to adults.
- Despite these in vitro variations, mature newborns possess a functionally adequate hemostatic system.
Impact:
- Provides crucial insights into the ontogeny of hemostasis, essential for understanding neonatal hematology.
- Highlights the importance of considering developmental stage when interpreting hemostatic parameters.
- Informs clinical practice regarding the assessment and management of bleeding risks in neonates and infants.
Abstract:
The mechanisms involved in haemostasis develop early in gestational life. Vessel wall contractility, platelets and increasing activity of coagulation and fibrinolysis have been found as early as the tenth week of gestational age. The development is not completed at birth and lasts throughout the first year of life. Mainly impaired platelet function and lower activity of coagulation factors differ from findings in older children and adults. Despite these in vitro differences, mature newborn babies appear to have a well functioning haemostasis.