Blood coagulations studies in pregnant patients with infective hepatitis.

Coagulation studies were made on 22 pregnant women with acute infective hepatitis and on 15 normal control pregnant women in third trimester. Fourteen hapatitis patients had clinical evidence of liver failure and all of them had a haemorrhagic diathesis; none of the patients without liver failure showed clinical evidence of haemostatic defects. Coagulopathy was present in most patients, its severity being greater in those with hepatic failure. Significant alterations were observed in bleeding time, whole blood clotting time, prothrombin time, thrombin time, plasma fibrinogen and serum levels of fibrinogen degradation products. The last three disturbances were most frequent in patients with liver failure. Increased fibrinolysis and disseminated intravascular coagulation also appeared to play a contributory role, particularly in patients with hepatic failure.