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Daily bibliographic review of the Neurosurgery Department. La Fe University Hospital. Valencia, Spain

Endoscopic third ventriculostomy: can we predict success during surgery?

ETV-1

Neurosurg Rev (2014) 37:89–97

Endoscopic third ventriculostomy (ETV) is widely used as an alternative technique for hydrocephalus treatment. ETV success or failure may be influenced by numerous factors. In this study, we have analyzed preoperative and intraoperative risk factors and suggest an intraoperative scale to predict etV failure.

Fifty-one patients (27 adults and 24 children) underwent an etV at Carlos Haya University Hospital, Malaga. Intraoperative video records were assessed and the following intraoperative findings were recorded: (1) abnormal ventricular anatomy, (2) intraoperative incident, (3) Liliequist membrane opening in a second endoscopic maneuver, (4) thickened or scarred membranes in the subarachnoid space, (5) absence or “weakness” of pulsation of third ventricle floor at etV completion, and (6) floppy premammillary membrane that needs edge coagulation. An intraoperative scale ranging from 0 to 6 points was performed.

A significant relation was found between a higher result on the prognosis scale and etV failure (p <0.0001). An absence or weakness of pulsation of the third ventricle floor at etV completion was significantly related to etV failure (p <0.0001).

The presence of thickened or scarred membranes in the subarachnoid space was significantly related to etV failure (p <0.04) as well as the Liliequist membrane opening in a second endoscopic maneuver (p <0.008). Intraoperative factors should be taken into account for prediction of etV success. More studies with larger case series are needed to determine the influence of all intraoperative factors over etV success

Category: Endoscopy, hydrocephalus

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