Factors determining the risk of severe (WHO grades 3 and 4) hemorrhage in hematologic patients

Hemorrhage is a frequent cause of death in hematologic patients. Factors influencing its occurrence are still not precisely defined. Hence, the objectives of this report were to define these factors in a group of patients suffering from severe (WHO grades 3 and 4) hemorrhage, hospitalized in the Department of Hematology, Oncology and Internal Medicine, The Medical University of Warsaw, Poland.