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  • Title: Spontaneous Intracranial Hypotension: Characteristics of the Serious Form in a Series of 24 Patients.
    Author: Idrissi AL, Lacour JC, Klein O, Schmitt E, Ducrocq X, Richard S.
    Journal: World Neurosurg; 2015 Dec; 84(6):1613-20. PubMed ID: 26165144.
    Abstract:
    BACKGROUND: Recommended treatments for spontaneous intracranial hypotension (SIH) range from bed rest only to neurosurgery. However, the serious form of SIH is poorly defined. A better description of patient characteristics and their outcome may help define therapeutic options. METHODS: We reviewed 24 cases of patients with SIH and separated them into 2 groups according to whether or not they presented with signs of severity at admission: disturbance of consciousness, subdural hematomas (SDHs), and cerebral venous thrombosis. RESULTS: Nine patients (37%) were classified as having a serious form of SIH: six (25%) presented SDHs; three (12%) disturbance of consciousness; and one (4%) cerebral venous thrombosis. Bed rest and epidural blood patches (EBPs) were sufficient to treat all patients in the nonserious form group and 4 patients in the serious form group. Two patients (8%) had to undergo cerebrospinal fluid leak repair, and 3 others (12%) evacuation of SDHs. Outcome was good in both groups, with only one (4%) death due to extensive SDHs. Times to diagnosis in the serious form group (63 vs. 35 days, P = 0.052) and to recovery (9 months vs. 5 months, P = 0.088) tended to be higher without reaching difference. CONCLUSIONS: The presence of SDHs, disturbance of consciousness, and a trend toward a longer time to diagnosis and recovery seem to define the serious form of SIH. These patients may require exploration and surgical repair of cerebrospinal fluid leak, only after failure of conservative measures--bed rest and time--and EBP, with good outcome.
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