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Updated: Aug 6, 2026
Neuronavigation and Laparoscopy Guided Ventriculoperitoneal Shunt Insertion for the Treatment of Hydrocephalus
Published on: October 14, 2022
Effectiveness of anti-siphon devices in CSF shunts for preventing overdrainage in normal pressure hydrocephalus: a
Anderson Silva Corin1, Lidia Cheidde2, Rudolfh Batista Arend3
1Federal University of Pelotas, Pelotas, RS, Brazil.
Introduction:
We conducted a systematic review and meta-analysis to compare the effectiveness of shunts with and without anti-siphon devices (ASDs) or other flow-regulating systems in preventing cerebrospinal fluid (CSF) overdrainage and its associated complications.
Methods:
Following established guidelines, we searched PubMed, Embase, Scopus, Cochrane, and Web of Science for clinical studies evaluating adult patients diagnosed with NPH who underwent CSF shunting with ASDs or flow-regulating valves, and included a control group of patients with standard CSF shunts lacking such mechanisms. Non-English studies, conference abstracts, and case reports were ineligible.
Results:
We included seven studies with 928 patients. Although most outcomes showed no statistically significant difference between the intervention and control groups, ASDs had reduced incidences of subdural hygroma (OR = 0.33; p = 0.0368) and subdural hematoma (RR = 0.35; p = 0.0014), indicating a clear benefit in preventing these adverse events.
Conclusion:
ASDs significantly reduced the development of subdural hygroma and subdural hematoma, playing a vital role in preventing neurological sequelae.
