ENGLISH ABSTRACT
JOURNAL ARTICLE
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[Differences of acute and chronic epidural hematoma].

Der Unfallchirurg 1992 September
Standard neurosurgical management demands prompt evacuation of all extradural hematomas to obtain a low incidence of mortality and morbidity. In selected cases some authors have suggested that moderate hematomas can be managed conservatively without risk to the patient and with a normal outcome. The goal of this study was to analyze the differences in preoperative clinical parameters between a group of acute and a group of chronic extradural hematomas (chronic extradural hematoma was defined as a delay of more than 72 h from the accident to diagnosis). One hundred fifteen (115) patients with extradural hematomas underwent a standard evaluation, documentation and neurosurgical management (prompt evacuation of all extradural hematomas through a craniotomy). Ninety-five patients (83%) had an acute extradural hematoma. Twenty patients (17%) had a chronic extradural hematoma. We analyzed the following parameters: age, cause of accident, clinical findings, Glasgow Coma Score, morphology of hematoma, location of hematoma, cause of bleeding and clinical outcome. The mean age (chronic 30/acute 32) and age distribution were not significantly different between groups. There were no differences in the cause of accident. All patients in both groups had skull fractures. There was no difference between groups regarding hematoma location, most of there being located in the temporal fossa. In the group of acute extradural hematomas, 62% of patients had a Glasgow Coma Score of less than 8 and 47% had pupillary dilation. In the group of chronic extradural hematomas, moderate clinical symptoms were found, with headache and discrete psychological changes most common. Eighty percent (80%) of the patients had a Glasgow Coma Score of greater than 13 and no patients had pupillary dilation.(ABSTRACT TRUNCATED AT 250 WORDS)

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