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Published on: November 20, 2015
Long-term ongoing coagulopathy in premature infants with respiratory distress syndrome
Muammer Buyukinan1, Deniz Yilmaz, Mehmet Yalaz
11Division of Neonatology, Department of Pediatrics, Ege University Faculty of Medicine, Izmir, Turkey.
Insights
Infants with respiratory distress syndrome (RDS) show long-term coagulation issues. Their antithrombin activity remained low, indicating persistent coagulopathy over six months.
Area of Science:
- Neonatalogy
- Hematology
- Pediatric Critical Care
Background:
- The acute phase of respiratory distress syndrome (RDS) involves an activated intravascular coagulation system.
- Long-term evaluation of coagulation in premature infants with RDS is lacking.
Purpose of the Study:
- To assess coagulation system activity in premature infants with RDS over a six-month period.
- To compare coagulation parameters in infants with RDS to healthy premature infants (HPIs), healthy mature infants (HMIs), and laboratory controls.
Main Methods:
- Longitudinal study over six months involving cord and venous blood sampling at birth, one month, and six months.
- Measurement of Protein C (PC), free protein S (f-PS), antithrombin (AT) activities, thrombin-antithrombin (TAT) complex, prothrombin fragment 1 + 2 (PF1 + 2), and fibrinogen levels.
- Comparison of coagulation markers between RDS infants, HPIs, HMIs, and controls.
Main Results:
- PC, f-PS, d-dimer, and fibrinogen levels were similar between HPI and RDS groups throughout the study.
- Anticoagulant proteins increased in HMIs and HPIs within six months.
- Infants with RDS exhibited persistently lower AT activity and significantly higher TAT and PF1 + 2 levels at one and six months.
Conclusions:
- Infants with RDS experience long-term consumption coagulopathy.
- Persistent alterations in coagulation markers suggest ongoing thrombotic risk in infants with RDS.
- Further research is warranted to explore therapeutic interventions for long-term coagulation disturbances in RDS.
Abstract:
The previously reported activated intravascular coagulation system in the acute phase of respiratory distress syndrome (RDS) has not been evaluated in the long term. We assessed the activities of coagulation system of a cohort of premature infants with RDS in comparison with healthy premature infants (HPIs), healthy mature infants (HMIs), and pediatric laboratory controls over a 6-month period. Cord and venous blood samples were taken at birth, at the first month and sixth month. Protein C (PC), free protein S (f-PS), and antithrombin (AT) activities, thrombin-antithrombin (TAT) complex, prothrombin fragment 1 + 2 (PF1 + 2), and fibrinogen levels were measured. Mean PC, f-PS, d-dimer, and fibrinogen values were similar at all periods for HPI and RDS groups. Low neonatal anticoagulant proteins increased within 6 months in HMI and HPI groups. However, in RDS group, the AT activity remained significantly lower together with significantly higher TAT and PF1 + 2 levels both at the first month and at sixth month, suggesting a long-term consumption coagulopathy.
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