title: [Chronic subdural hematoma: study of 161 patients and the relationship with coagulation abnormalities].
abstract: The chronic subdural hematoma represents one of the most frequent types of intracranial hemorrhage. One hundred sixty one patients operated in the Clinical Hospital of State University of Campinas-SP (UNICAMP) from April 1994 to May 2000, were analyzed retrospectively in order to characterize the population and to study the importance of the pre-operative coagulation analysis in the outcome. The majority of the population was male (86%), white (85.1%) and in the fifth decade (median age: 57 years). A high mortality index in the postoperative period was found in patients with INR (international normalized ratio) values greater than 1.25 and/or thrombocytopenia (p<0.001 and p=0.004 respectively). Patients with previous head injury history (76%) showed a lower mortality (p=0.044). The results stand out the importance of the pre-operative evaluation with coagulation studies in order to correct possible abnormalities.
authors.affiliation: Faculdade de Ciência Médicas, Universidade Estadual de Campinas, Campinas, SP, Brasil.
authors.forename: Clarissa Lin
authors.initials: CL
authors.lastname: Yasuda
authors.forename: Márcia Elisabete
authors.initials: ME
authors.lastname: Morita
authors.forename: Fernanda Yoshi
authors.initials: FY
authors.lastname: Nishimori
authors.forename: Agnes Meri
authors.initials: AM
authors.lastname: Yasuda
authors.forename: Hélvio Leite
authors.initials: HL
authors.lastname: Alves
mesh_terms: D000293:Adolescent; D000328:Adult; D017677:Age Distribution; D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D001777:Blood Coagulation; D001938:Brazil / Q000453:epidemiology; D002648:Child; D002675:Child, Preschool; D006259:Craniocerebral Trauma / Q000150:complications; D005260:Female; D015600:Glasgow Coma Scale; D020200:Hematoma, Subdural, Chronic / Q000097:blood* / Q000401:mortality* / Q000601:surgery; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D017678:Sex Distribution; D012737:Sex Factors