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Updated: Jan 30, 2026

Neuronavigation and Laparoscopy Guided Ventriculoperitoneal Shunt Insertion for the Treatment of Hydrocephalus
Published on: October 14, 2022
Shunted Hydrocephalus: Who Has More Chances to Get Rid of the Shunt?
Mino Zucchelli1, Francesca Nicolini1, Francesco Toni2
1IRCCS Istituto delle Scienze Neurologiche di Bologna, Pediatric Neurosurgery, Bologna, Italy.
Insights
Secondary endoscopic third ventriculostomy (ETV) offers a successful alternative to shunt removal in hydrocephalus patients with shunt malfunction. Patient age, prior shunt revisions, and ETV success score predict successful outcomes.
Area of Science:
- Neurosurgery
- Neurology
- Pediatric Neurosurgery
Background:
- Cerebrospinal fluid (CSF) shunts significantly impact hydrocephalus patient outcomes.
- Long-standing shunts present numerous complications, necessitating shunt removal attempts.
- Secondary endoscopic third ventriculostomy (ETV) is explored for shunt removal in malfunction cases.
Purpose of the Study:
- To evaluate the efficacy of secondary ETV for shunt removal in hydrocephalus patients.
- To identify patient factors predicting successful shunt independence after secondary ETV.
Main Methods:
- A cohort of 47 patients over 6 months old with ventriculoperitoneal shunt malfunction underwent secondary ETV between 2006-2015.
- Shunt removal or ligation was performed concurrently with ETV.
- Patients were assessed for shunt independence, normalized intracranial pressure, and symptom resolution.
Main Results:
- The overall success rate for secondary ETV was 74%, achieving shunt independence.
- Long shunt duration (up to 30 years) did not preclude success.
- Factors predicting ETV failure included a higher number of previous shunt revisions (P=0.026) and younger age (P=0.017).
- A higher ETV success score correlated with successful secondary ETV outcomes (P=0.014).
Conclusions:
- Secondary ETV is a viable option for shunt removal in many hydrocephalus patients, even after prolonged shunting.
- Key predictors of success include patient age, prior shunt revision history, and the ETV success score.
- These factors aid in selecting optimal candidates for secondary ETV to achieve shunt independence.
Objective/Background:
The natural history and the outlook of patients with hydrocephalus are dramatically affected using cerebrospinal fluid shunts. The several issues related with a long-standing shunt should suffice to justify all the possible attempts to free the patient from it. This study focused on the role of secondary endoscopic third ventriculostomy (ETV) in the achievement of shunt removal in cases of shunt malfunction, and to identify patients who could benefit most from the procedure.
Methods:
In the period of 2006-2015, ETV was attempted in 47 patients >6 months old with ventriculoperitoneal shunt malfunction who presented with increased ventricle size compared with the previous neuroradiological examinations; simultaneously the shunt was removed or ligated.
Results:
The overall success rate of secondary ETV was 74% (shunt-free patients with normalized intracranial pressure and absence of symptoms attributable to hydrocephalus) in patients with a long shunt duration (up to 30 years). The number of previous shunt revision procedures (P = 0.026) and lower age (P = 0.017) correlate with the likelihood of secondary ETV failure, a score of 80 as ETV success score (calculated for both pediatric and adult patients, even if the score was meant for the pediatric population) correlates with secondary ETV success (P = 0.014).
Conclusions:
Many patients with shunt malfunction can benefit from secondary ETV even after decades of shunting. Age at secondary ETV, the number of previous shunt revisions, and the ETV success score can help to better identify the best candidates for the procedure.
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