Slit ventricle syndrome presenting with paroxysmal hypersomnia in an adult: case report

Is the slit ventricle syndrome always a slit ventricle syndrome?

The term 'slit ventricle syndrome' (SVS) refers to the occurrence of headache, vomiting, and possibly some degree of consciousness impairment in shunted hydrocephalic children in whom slit-like ventricles are seen on computerized tomography (CT) scan examination. The syndrome has been typically observed in older hydrocephalic children operated on in early infancy, even though it has also been observed occasionally in young children and adults. The clinical characteristics of the SVS, the results of the laboratory investigations and the therapeutic measures utilized in the various cases described in the literature differ so widely as to suggest that different clinical conditions are actually being described. In some cases, the diagnosis of SVS should be avoided and substituted by a correct diagnosis of CSF shunt malfunction or of disturbances unrelated to the CSF shunting therapy, e.g., childhood migraine.

Hydrocephalus: overdrainage by ventricular shunts. A review and recommendations

Selected literature review of the clinical course of patients with ventricular shunts for hydrocephalus shows that the effects of cerebrospinal fluid overdrainage are subdural hematoma, craniosynostosis, slit ventricle syndrome, and low intracranial pressure syndrome. These occur sequentially at different age groups, but approximate averages of incidence and time of occurrence after first shunt reveal an overall incidence of 10%-12% for at least one of these appearing at 6.5 years after shunting. The basic etiology, diagnosis, and variety of treatment modalities available are reviewed, including the need for shunt closing intracranial pressure control. Included is a hydrocephalus program designed to minimize the need for long-term extracranial shunts and to maximize therapeutic intracranial procedures for hydrocephalus.