title: Delayed post-traumatic epidural hematoma. A review.
abstract: Post-traumatic acute epidural hematoma (EDH) is generally visible on the CT scan done immediately after admission: occasionally, it only comes to light at a later scan and is then termed delayed (DEDH). Since the introduction of CT, the frequency of this occurrence has gone up from 6-13% to 30%. The mechanisms responsible for the delayed appearance of the epidural hematoma a "tamponade" effect are usually increased endocranial pressure and post-traumatic arterial hypotension as well as, in a limited number of cases, coagulopathy, CSF drainage, and arterio-venous shunt. The authors report 5 of their own cases and 45 published cases and discuss the characteristics of this particular form of hematoma and its outcome.
mesh_terms: D000328:Adult; D001929:Brain Edema / Q000000981:diagnostic imaging / Q000601:surgery; D001930:Brain Injuries / Q000000981:diagnostic imaging* / Q000601:surgery; D005260:Female; D016489:Head Injuries, Closed / Q000000981:diagnostic imaging / Q000601:surgery; D006407:Hematoma, Epidural, Cranial / Q000000981:diagnostic imaging* / Q000601:surgery; D006408:Hematoma, Subdural / Q000000981:diagnostic imaging / Q000601:surgery; D006801:Humans; D008297:Male; D009460:Neurologic Examination; D012887:Skull Fractures / Q000000981:diagnostic imaging / Q000601:surgery; D013997:Time Factors; D014057:Tomography, X-Ray Computed; D016896:Treatment Outcome; D014948:Wounds, Gunshot / Q000000981:diagnostic imaging / Q000601:surgery