Bile acids and coagulation factors
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OBJECTIVE: To examine whether there is an association between bile acids and coagulation factors in children with chronic liver disease. METHODS: Forty-five patients (age 2.8 months-18.8 years) were included in this cross-sectional observational study carried out at a single tertiary referral center. Coagulation factors, prothrombin time, albumin, and total fasting serum bile acids were analyzed. The international normalized ratio (INR) and the pediatric end-stage liver disease score were calculated. RESULTS: The 12 patients with bile acids more than 200 μmol/l showed a significant positive correlation between bile acids and factor V (FV), FVII, and prothrombin time (r(s) = 0.80, 0.72, 0.60, P<0.05) and a significant negative correlation between bile acids and INR (r(s) = -0.58, P<0.05). Conversely, in the group with bile acids less than 200 μmol/l, there was a significant negative correlation between bile acids and FVII and FIX (r(s) = -0.41 and -0.41, P<0.05) and a positive, albeit nonsignificant, correlation between bile acids and INR. No in-vitro analytical interference between bile acids and coagulation factors was found. Patients with bile acids more than 200 μmol/l had a significantly worse outcome than patients with lower levels of bile acids. CONCLUSION: A positive correlation was found between bile acids and coagulation factors in patients with bile acids more than 200 μmol/l. Coagulation factors may be questionable as prognostic markers in patients with markedly elevated bile acids.
