UNASSIGNED: The most appropriate surgical technique for posterior fossa decompression in @entity1645 ( @entity196 ) remains a matter of debate. Intraoperative electrophysiological studies during posterior fossa decompression of @entity196 ( @entity196 ) aim to shed light on the entity's pathomechanism as well as on the ideal extent of decompression. The existing reports on this issue state that significant improvement in conduction occurs after craniotomy in all cases, but additional durotomy contributes a further improvement in only a minority of cases. This implies that craniotomy alone might suffice for clinical improvement without the need of duraplasty or even subarachnoid manipulation at the level of the craniocervical junction. In contrast to published data, the authors describe the case of a 32-year-old @entity1 who underwent surgery for @entity196 associated with extensive cervicothoracic @entity1644 and whose intraoperative somatosensory evoked potentials (SSEPs) did not notably improve after craniotomy or following durotomy; rather, they only improved after opening of the fourth ventricle and restoration of CSF flow through the foramen of Magendie. Postoperatively, the @entity1 recovered completely from her preoperative @entity51 . To the authors' knowledge, this is the first report of significant SSEP recovery after opening the fourth ventricle in the decompression of a @entity196 . The electrophysiological and operative techniques are described in detail and the findings are discussed in the light of available literature. The authors conclude that there might be a subset of @entity196 @entity1 who require subarachnoid dissection at the level of the craniocervical junction to benefit clinically. Prospective studies with detailed electrophysiological analyses seem warranted to answer the question regarding the best surgical approach in @entity196 decompression.

Intraoperative somatosensory evoked potential recovery following opening of the fourth ventricle during posterior fossa decompression in XXXX : case report.

@entity1 :: ('9606', 'Species') :: ['woman', 'patients', 'patient'] @entity1644 :: ('MESH:D013595', 'Disease') :: ['syringomyelia'] @entity1645 :: ('MESH:D001139', 'Disease') :: ['Chiari malformation'] @entity196 :: ('MESH:D020754', 'Disease') :: ['Type I CM', 'CM', 'CM-I'] @entity51 :: ('MESH:D009461', 'Disease') :: ['neurological deficits']
@entity1645 :: (MESH:D001139,Disease) :: ['Chiari malformation']
