Can Sequential Coagulation Monitoring Predict Major Haemorrhage in Extremely Low Birth Weight Infants?

Area of Science:

• Neonatal Medicine
• Pediatric Hematology
• Critical Care Pediatrics

Background:

• Extremely low birth weight (ELBW) infants face life-threatening risks from bleeds such as intraventricular hemorrhage (IVH) and pulmonary hemorrhage (PH).
• Serial coagulation monitoring using international normalized ratio (INR) with small volume samples offers potential for early diagnosis and prevention of major bleeds.

Purpose of the Study:

• To explore the predictive capability of serial INR monitoring for major bleeding events (IVH, PH) in ELBW infants.
• To assess the feasibility of INR monitoring and its secondary outcomes, including mortality, in ELBW infants.

Main Methods:

• A prospective longitudinal study involving serial INR monitoring via point-of-care testing in ELBW infants during their first 30 days of life.
• Stratification of 127 ELBW infants into bleeding and non-bleeding groups for comparative analysis.

Main Results:

• Bleeding events (IVH, PH) occurred in 31% of ELBW infants, with significantly higher mortality (26%) in the bleeding group compared to controls (5%).
• While median INR values in the first 3 days before bleeding were slightly elevated (1.55 vs. 1.45), this difference was not statistically significant (p=0.81).
• Lower platelet counts were observed in the bleeding group during the 3rd day and later weeks of life.

Conclusions:

• Serial INR point-of-care testing is feasible in ELBW infants.
• Current INR monitoring protocols were insufficient to predict major hemorrhagic events in ELBW infants.
• Further research with daily INR and platelet count monitoring in early life is recommended to improve hemorrhage risk detection.