Prediction of Response to Shunt Surgery in Normal Pressure Hydrocephalus Using Radscale and Lumbar Puncture
Prediction of Response to Shunt Surgery in Normal Pressure Hydrocephalus Patients Using Radscale and Lumbar Puncture
Idiopathic normal pressure hydrocephalus (iNPH) is a neurological disorder in older adults characterized by walking difficulties, cognitive decline, and urinary dysfunction. While ventriculoperitoneal (VP) shunt surgery can relieve symptoms, identifying which patients will experience meaningful recovery remains challenging.
The purpose of this study is to determine how accurately two preoperative diagnostic tools, the iNPH Radscale (a structured brain imaging score) and a standardized cerebrospinal fluid (CSF) tap test (lumbar puncture), predict symptom and gait improvement following shunt surgery.
Participants enrolled in this study will undergo:
- Baseline neurological evaluations, cognitive screening via the Mini-Mental State Examination, and standardized walking tests (Timed Up and Go and 10-meter walk tests).
- Review of brain CT or MRI scans using the 7-feature iNPH Radscale (scored 0 to 12).
- A standardized CSF tap test, involving the removal of 30 to 50 mL of spinal fluid via lumbar puncture, followed by repeat walking evaluations at 2-4 hours and 24 hours to monitor temporary symptom response.
- Standard-of-care VP shunt surgery if determined clinically appropriate by the treating surgical team.
- Postoperative follow-up visits at 1, 3, and 6 months to evaluate functional recovery and gait changes using the Hellström iNPH scale.
연구 개요
상태
연구 유형
등록 (추정된)
참여기준
자격 기준
공부할 수 있는 나이
건강한 자원 봉사자를 받아들입니다
연구 대상 성별
샘플링 방법
연구 인구
Elderly patients aged 60 years or older presenting to the Department of Neurosurgery at Assiut University Hospitals with clinical suspicion of idiopathic normal pressure hydrocephalus (iNPH) characterized by the clinical triad of gait disturbance, cognitive impairment, and/or urinary dysfunction, alongside neuroimaging (CT or MRI) evidence of ventriculomegaly compatible with iNPH.
설명
Inclusion Criteria:
- Age 60 years or older.
- Clinical suspicion of idiopathic normal pressure hydrocephalus (iNPH), including the clinical triad (gait disturbance, cognitive impairment, and/or urinary dysfunction).
- Neuroimaging (brain CT or MRI) demonstrating ventriculomegaly compatible with possible iNPH.
- Physical ability to perform standardized gait testing.
- Ability to provide written informed consent, or consent provided via a legally authorized representative.
Exclusion Criteria:
- Secondary hydrocephalus with an identifiable alternative cause (e.g., recent subarachnoid or intraventricular hemorrhage, major head trauma, or central nervous system infection).
- Presence of any contraindication to lumbar puncture (including relevant bleeding risk/coagulopathy, puncture-site infection, or intracranial mass effect).
- Previous cerebrospinal fluid (CSF) shunt or definitive hydrocephalus surgical intervention prior to enrollment.
- Concurrent acute illness preventing valid clinical or functional assessment.
공부 계획
연구는 어떻게 설계됩니까?
디자인 세부사항
- 관찰 모델: COHORT
- 시간 관점: PROSPECTIVE
코호트 및 개입
그룹/코호트 |
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Idiopathic Normal Pressure Hydrocephalus (iNPH) Cohort
Elderly patients aged 60 years or older presenting with clinical suspicion of the iNPH symptom triad (gait disturbance, cognitive impairment, and/or urinary dysfunction) and neuroimaging-confirmed ventriculomegaly. All participants undergo baseline clinical and cognitive assessments, preoperative neuroimaging evaluation using the iNPH Radscale (scores 0-12), and a standardized cerebrospinal fluid (CSF) tap test with 30-50 mL removal via lumbar puncture. Patients who proceed to clinically indicated ventriculoperitoneal (VP) shunt surgery (PS Medical medium-pressure valve, Medtronic) are followed prospectively at 1, 3, and 6 months postoperatively to assess functional outcomes and gait recovery. |
연구는 무엇을 측정합니까?
주요 결과 측정
결과 측정 |
측정값 설명 |
기간 |
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Change from Baseline in Hellström iNPH Scale Gait Domain Score at 6 Months
기간: Baseline and 6 months postoperatively
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The Hellström idiopathic normal pressure hydrocephalus (iNPH) scale gait domain assesses walking speed, step count during a standardized 10-meter walk test, and ordinal rating of gait pattern. Scores are converted to a normalized scale ranging from 0 to 100, where 0 represents the most severe gait dysfunction and 100 represents normal performance of healthy individuals. Higher scores or positive changes from baseline indicate clinical improvement in gait function. |
Baseline and 6 months postoperatively
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공동 작업자 및 조사자
연구 기록 날짜
연구 주요 날짜
연구 시작 (추정된)
기본 완료 (추정된)
연구 완료 (추정된)
연구 등록 날짜
최초 제출
QC 기준을 충족하는 최초 제출
처음 게시됨 (실제)
연구 기록 업데이트
마지막 업데이트 게시됨 (실제)
QC 기준을 충족하는 마지막 업데이트 제출
마지막으로 확인됨
추가 정보
이 연구와 관련된 용어
키워드
기타 연구 ID 번호
- Predicting NPH Shunt Response
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