The level of circulating endothelial progenitor cells may be associated with the occurrence and recurrence of chronic subdural hematoma

OBJECTIVES: The onset of chronic subdural hematoma may be associated with direct or indirect minor injuries to the head or a poorly repaired vascular injury. Endothelial progenitor cells happen to be one of the key factors involved in hemostasis and vascular repair. This study was designed to observe the levels of endothelial progenitor cells, white blood cells, platelets, and other indicators in the peripheral blood of patients diagnosed with chronic subdural hematoma to determine the possible relationship between the endothelial progenitor cells and the occurrence, development, and outcomes of chronic subdural hematoma. METHOD: We enrolled 30 patients with diagnosed chronic subdural hematoma by computer tomography scanning and operating procedure at Tianjin Medical University General Hospital from July 2009 to July 2011. Meanwhile, we collected 30 cases of peripheral blood samples from healthy volunteers over the age of 50. Approximately 2 ml of blood was taken from veins of the elbow to test the peripheral blood routine and coagulation function. The content of endothelial progenitor cells in peripheral blood mononuclear cells was determined by flow cytometry. RESULTS: The level of endothelial progenitor cells in peripheral blood was significantly lower in preoperational patients with chronic subdural hematomas than in controls. There were no significant differences between the two groups regarding the blood routine and coagulation function. However, the levels of circulating endothelial progenitor cells were significantly different between the recurrent group and the non-recurrent group. CONCLUSIONS: The level of circulating endothelial progenitor cells in chronic subdural hematoma patients was significantly lower than the level in healthy controls. Meanwhile, the level of endothelial progenitor cells in recurrent patients was significantly lower than the level in patients without recurrence. Endothelial progenitor cells may ...

Hematoma subdural crônico: estudo de 161 pacientes operados e a relação com alterações no coagulograma / Chronic subdural hematoma: study of 161 patients and the relationship with coagulation abnormalities

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 por cento), da cor branca (85,1 por cento) 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 por cento) (p=0,044). Os resultados ressaltam a importância da avaliação pré-operatória com o coagulograma a fim de se corrigir possíveis alterações