Related Experiment Video
Updated: Jun 17, 2026

14:59
Neuronavigation and Laparoscopy Guided Ventriculoperitoneal Shunt Insertion for the Treatment of Hydrocephalus
Published on: October 14, 2022
Executive function improvement in normal pressure hydrocephalus following shunt surgery
Ezequiel Gleichgerrcht1, Andrés Cervio, Jorge Salvat
1Institute of Cognitive Neurology, Buenos Aires, Argentina.
Behavioural Neurology
|December 10, 2009
Summary
Shunt surgery improved executive functions in normal pressure hydrocephalus (NPH) patients. This study highlights the benefits of ventriculoperitoneal shunts for cognitive enhancement in NPH.
Area of Science:
- Neurology
- Neurosurgery
- Cognitive Science
Background:
- Normal Pressure Hydrocephalus (NPH) is characterized by cognitive deficits, particularly in executive functions.
- Prefrontal cortex (PFC) dysfunction is implicated in NPH-related executive impairments.
- Shunt surgery is a primary treatment for NPH, but its impact on executive functions requires further elucidation.
Purpose of the Study:
- To evaluate the improvement of executive functions following shunt surgery in patients with early-stage NPH.
- To assess the efficacy of ventriculoperitoneal shunting in restoring cognitive abilities sensitive to PFC damage.
Main Methods:
- A cohort of NPH patients underwent comprehensive neuropsychological testing before and after ventriculoperitoneal shunt implantation.
- Cognitive assessments included tests sensitive to prefrontal cortex (PFC) function, such as the Boston Naming Test, backward digit span, Trail Making Test Part B, and phonological fluency tasks.
Main Results:
- Patients demonstrated significant improvements in executive functions post-shunt surgery.
- Specific gains were observed in naming, working memory (backward digit span), cognitive flexibility (Trail Making Test B), and verbal fluency.
Conclusions:
- Ventriculoperitoneal shunt implantation positively impacts executive functions in NPH patients who respond to cerebrospinal fluid drainage.
- The findings underscore the importance of assessing executive functions in NPH patients due to their significant role in daily functioning and the potential for cognitive recovery with surgical intervention.
Related Concept Videos
Increased Intracranial Pressure l: Introduction
Intracranial hypertension is a sustained elevation of intracranial pressure (ICP) above 22 mm Hg. In supine adults, normal ICP is ~7–15 mm Hg.The rigid, nonexpandable cranium contains three components—brain tissue, blood, and cerebrospinal fluid (CSF)—that total ~1,700 mL in a typical adult: 1,400 mL brain (~80%), 150 mL blood (~10%), and 150 mL CSF (~10%). According to the Monro–Kellie doctrine, total intracranial volume is effectively fixed. When one component expands, CSF and venous blood...
Increased Intracranial Pressure ll: Pathophysiology
Increased intracranial pressure (ICP) refers to a potentially life-threatening rise in pressure inside the skull. This usually happens when there is a major change in the volume of brain tissue, blood, or cerebrospinal fluid (CSF) — the three components inside the skull. According to the Monro-Kellie doctrine, if the volume of one component increases, the volumes of the other components must decrease to maintain normal pressure. If this does not happen, ICP rises.The process often begins with...
Cerebral Edema l: Introduction
Cerebral edema is a pathological increase in brain water content that disrupts intracranial pressure regulation and impairs neurological function. Because the cranial vault is rigid, even modest increases in tissue volume can compromise cerebral perfusion, distort neural structures, and initiate secondary injury. Cerebral edema develops through four principal mechanisms: vasogenic, cytotoxic, interstitial, and ionic.Vasogenic EdemaVasogenic edema arises from disruption of the blood–brain...
Cerebral Edema ll: Pathophysiology
Vasogenic edema is a major form of cerebral edema characterized by abnormal accumulation of fluid in the brain’s extracellular space due to disruption of the blood–brain barrier (BBB). The BBB is a specialized structure composed of endothelial cells connected by tight junctions, supported by astrocytic endfeet and a basement membrane. Under normal conditions, it tightly regulates the movement of ions, proteins, and solutes between the bloodstream and brain parenchyma. When this barrier loses...
