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Endoscopic third ventriculostomy in idiopathic normal pressure hydrocephalus
Michelangelo Gangemi1, Francesco Maiuri, Simona Buonamassa
1Department of Neurological Sciences, Section of Neurosurgery, Università degli Studi di Napoli Federico II, Naples, Italy. mgangemi@unina.it
Neurosurgery
|June 25, 2004
Summary
Endoscopic third ventriculostomy (ETV) is effective for idiopathic normal pressure hydrocephalus (INPH) with short symptoms and gait issues. ETV offers similar results to shunting, reserving the latter for non-responders.
Area of Science:
- Neurosurgery
- Neurology
- Medical Imaging
Background:
- Idiopathic normal pressure hydrocephalus (INPH) presents diagnostic and therapeutic challenges.
- Traditional treatment involves cerebrospinal fluid (CSF) shunting, but less invasive options are sought.
- Endoscopic third ventriculostomy (ETV) offers a potential alternative for selected INPH patients.
Purpose of the Study:
- To evaluate the efficacy and indications of endoscopic third ventriculostomy (ETV) for idiopathic normal pressure hydrocephalus (INPH).
- To compare ETV outcomes with traditional CSF shunting procedures in INPH patients.
Main Methods:
- A series of 25 INPH patients underwent ETV between 1994-2000.
- Patient selection criteria included age (<75), symptom duration (≤1 year), gait disturbance prevalence, mild dementia, significant ventricular enlargement on MRI, and normal intracranial pressure.
- Outcomes were compared to 14 published series (777 patients) of shunted INPH patients.
Main Results:
- Neurological improvement was observed in 72% of ETV patients, slightly higher than the 66% in shunted patients.
- Gait disturbance showed significant improvement in both ETV and shunted groups.
- ETV had a lower complication rate (4%) compared to shunting (37.9%).
Conclusions:
- ETV is a viable treatment option for INPH patients with short symptom duration, predominant gait disturbance, and mild cognitive impairment.
- ETV yields comparable results to shunting in selected INPH cases.
- Shunting should be reserved for INPH patients who do not improve after ETV, even with confirmed CSF flow.