RESUMO -O objetivo deste estudo é analisar a evolução de pacientes com hematoma subdural crônico em relação aos achados do coagulograma. Foram analisados 161 pacientes operados no Hospital das Clínicas-UNICAMP entre abril de 1994 e 2000. Foi detectado um predomínio do sexo masculino (86,3%), da cor branca (85,1%) e da faixa etária na quinta década (mediana 57 anos). O estudo mostrou mortalidade maior no período pós-operatório entre os pacientes com valores de RNI (international normalized ratio) superiores a 1,25 e/ou trombocitopenia (p<0,001 e p=0,004, respectivamente) e mortalidade menor para os pacientes com antecedente de traumatismo cranioencefálico (76%) (p=0,044). Os resultados ressaltam a importância da avaliação pré-operatória com o coagulograma a fim de se corrigir possíveis alterações.PALAVRAS-CHAVE: hematoma subdural crônico, coagulação, mortalidade. Chronic subdural hematoma: study of 161 patients and the relationship with coagulation abnormalitiesABSTRACT-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.KEY WORDS: chronic subdural hematoma, coagulation, mortality. O hematoma subdural crônico (HSC) representa uma das formas mais frequentes de hemorragia intracraniana 1 e é considerado uma lesão benigna, ainda que cronicamente progressiva 1-3 . O maior acometimento de pacientes idosos leva a uma variedade de dificuldades diagnósticas e terapêuticas devido a inespecificidade dos sintomas bem como patologias associadas 1,4 . Na maioria dos casos a evolução sem a instituição do tratamento cirúrgico pode ser fatal tanto pela compressão cerebral exercida pelo hematoma quanto pelas doenças associadas 5 . Por outro lado o diagnóstico precoce e a drenagem cirúrgica permitem a recuperação completa na maioria dos casos 1 .O HSC é caracterizado por uma coleção encapsulada e bem delimitada entre a dura máter e a membrana aracnóide contendo uma mistura de sangue fluido e coagulado de vários estágios 5,6 . A fisiopatologia do hematoma subdural crônico tem sido alvo de estudos desde a publicação de Virchow em 1857, em que descrevia com detalhes a lesão como uma paquimeningite hemorrágica 2,7,8 . Apesar das diversas teorias desenvolvidas desde então, a su...
Marked changes in mice pubic symphysis occur by the end of pregnancy. Tissue remodeling involves a dynamic balance between cell proliferation and programmed cell death as well as changes in the extracellular matrix components. Therefore, it is important to consider both of these cellular behaviors when investigating the mechanism that regulates interpubic tissue remodeling, growth during late pregnancy and partus ensuring involution during the postpartum period. Proliferating and programmed death cells were identified by immunohistochemistry (proliferating cell nuclear antigen and TUNEL detection, respectively) and the rates at which these processes occurred were determined by morphometric analysis. The results demonstrated that cellular proliferation was intense during the period of ligament formation, from D15 to D18, thereafter abruptly declining on D19. From parturition (D19) onwards, an ever-increasing decline in the cellular proliferation levels could be observed. The quantitative analyses of cellular death showed opposite results when compared to cellular proliferation. During early pregnancy the cycle of cellular renovation was clearly proliferative and during late mouse pregnancy the cycle was directed by programmed cellular death. Although the high levels of cellular death during postpartum involution could be shown by the TUNEL-positive cells, we were unable to observed picnotic nucleus at the light microscopy.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.