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Efficacy of endoscopic third ventriculostomy in old aged patients with normal pressure hydrocephalus

 Young Sill Kang  ;  Eun-Kyung Park  ;  Ju-Seong Kim  ;  Dong-Seok Kim  ;  Ulrich-Wilhelm Thomale  ;  Kyu-Won Shim 
 Neurologia i Neurochirurgia Polska, Vol.52(1) : 29-34, 2018 
Journal Title
 Neurologia i Neurochirurgia Polska 
Issue Date
Aqueductal peak velocity ; Endoscopic third ventriculostomy (ETV) ; Normal pressure hydrocephalus
Normal pressure hydrocephalus (NPH) is a chronic disorder caused by interrupted CSF absorption or flow. Generally, shunt placement is first option for NPH treatment. Due to complications of ventriculo-peritoneal (VP) shunt placement, endoscopic third ventriculostomy (ETV) can be considered as an alternative treatment option. Here we report the efficacy of ETV especially in old aged patients with normal pressure hydrocephalus. Total 21 old aged patients with communicating hydrocephalus with opening pressure, measured via lumbar puncture, less than 20cm H2O underwent ETV. 15 patients had primary/idiopathic NPH and 6 patients had secondary NPH. All patients were studied with a MRI to observe the flow void at aqueduct and the fourth ventricle outflow. And all of them underwent ETV. In a group with peak velocity was higher than 5cm/s, nine patients (75%) were evaluated was 'favorable' and three of them (25%) was scored 'poor'. In another group with peak velocity less than 5cm/s, three of them were scored 'poor' and two of them were scored 'stable'. None of them was evaluated as 'favorable'. We also evaluated the outcomes according to etiology: 12 patients (80% of the patients with primary NPH) were evaluated with 'favorable' after ETV treatment. Two patients (13.3%) were as 'stable'. And one patient was as 'poor' evaluated. Five patients (83.3%) among patients with secondary NPH were as 'poor' evaluated and one of them was stable and no patient was as 'favorable' evaluated. 4 patients, which was as 'poor' evaluated in the group with the secondary NPH, underwent additional VP shunt implantation. Overall, the outcomes of the group with the idiopathic NPH after ETV treatment were more favorable than of the group with the secondary NPH. Our study suggest that ETV can be effective for selected elderly patients with primary/idiopathic NPH, when they satisfy criteria including positive aqueduct flow void on T2 Sagittal MRI and the aqueductal peak velocity, which is greater than 5cm/s on cine MRI.
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1. Journal Papers (연구논문) > 1. College of Medicine (의과대학) > Dept. of Neurosurgery (신경외과학교실)
Yonsei Authors
김동석(Kim, Dong Seok)
김주성(Kim, Ju Seong)
박은경(Park, Eun Kyung)
심규원(Shim, Kyu Won) ORCID logo https://orcid.org/0000-0002-9441-7354
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