title: Bleeding time in patients with cirrhosis: relation with degree of liver failure and clotting abnormalities. C.A.L.C. Group. Coagulation Abnormalities in Cirrhosis Study Group.
abstract: Patients with cirrhosis suffer from a complex haemostatic disturbance, due to abnormalities in clotting and fibrinolytic system activation and in primary haemostasis. The latter is indicated by a prolongation of bleeding time, which is a reliable indicator of platelet function in vivo. To further assess the relationship between bleeding time, degree of liver failure and clotting abnormalities in patients with cirrhosis, bleeding time was investigated in a prospective study of 70 consecutive patients with cirrhosis diagnosed by liver-needle biopsy, of whom 19 belonged to Child-Pugh class A, 29 to B and 22 to C. Among patients with cirrhosis, 40% had an abnormal bleeding time (> 10 min), and 42% had a platelet count < 100,000/microliters. Patients with severe liver failure (class C) had a lower platelet count and a more prolonged bleeding time than patients in classes A and B. Bleeding time was significantly inversely correlated to platelet count, fibrinogen, prothrombin activity and packed cell volume, and directly correlated to serum bilirubin and D-dimer. However, in class C patients, only a significant inverse correlation between bleeding time and fibrinogen was observed. These findings indicate that in cirrhosis worsening of platelet function is closely related to the degree of liver failure. The inverse correlation between bleeding time and fibrinogen indicates that a low value of this clotting parameter may account in part for platelet dysfunction.
authors.affiliation: Institute of Clinical Medicine I, La Sapienza University, Rome, Italy.
authors.forename: F
authors.initials: F
authors.lastname: Violi
authors.forename: R
authors.initials: R
authors.lastname: Leo
authors.forename: E
authors.initials: E
authors.lastname: Vezza
authors.forename: S
authors.initials: S
authors.lastname: Basili
authors.forename: C
authors.initials: C
authors.lastname: Cordova
authors.forename: F
authors.initials: F
authors.lastname: Balsano
mesh_terms: D001760:Bleeding Time; D001778:Blood Coagulation Disorders / Q000209:etiology*; D005260:Female; D006487:Hemostasis / Q000502:physiology; D006801:Humans; D008103:Liver Cirrhosis / Q000150:complications / Q000503:physiopathology*; D017093:Liver Failure / Q000145:classification / Q000209:etiology* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D010976:Platelet Count; D011446:Prospective Studies