Summary
Bleeding time determination is not advised as a general preoperative hemostasis screening
test, but it might be useful in some patient groups. Patients referred for liver biopsy
frequently have coagulation disturbances and are at risk of hemorrhage. In this prospective
study 219 liver biopsies were carried out regardless of a prolonged bleeding time,
but with minimum requirements for hemoglobin concentration, platelet count, and tests
of the internal and external coagulation pathways. The bleeding time was prolonged
in the case of 48 (22%) of the biopsies. Significant bleeding as defined by a hemoglobin
decrease of ≥2.0 g/dl occurred in nine patients. Three of these patients were bone
marrow transplanted. Patients with a prolonged bleeding time carried a five times
higher risk of bleeding (odds ratio = 5.0; confidence interval = 1.1-21.8; p = 0.019).
We conclude that the bleeding time may give additional information on the risk of
bleeding in some patient groups undergoing liver biopsy.