Function of parietal and frontal shunts in childhood hydrocephalus

A L Albright1, S J Haines, F H Taylor

  • 1Department of Neurological Surgery, University of Pittsburgh, Pennsylvania.

Journal of Neurosurgery
|December 1, 1988
PubMed

Insights

Cerebrospinal fluid (CSF) shunts inserted frontally function longer than those inserted parietally in children. Ventricular catheter placement also impacts shunt longevity, with frontal horn placement showing better outcomes.

Area of Science:

  • Neurosurgery
  • Pediatric Neurology
  • Medical Device Research

Background:

  • Hydrocephalus management often requires cerebrospinal fluid (CSF) shunts.
  • Shunt malfunction is a significant concern in pediatric hydrocephalus.
  • The anatomical insertion site may influence shunt performance.

Purpose of the Study:

  • To compare the functional duration of CSF shunts inserted via frontal versus parietal regions in children.
  • To identify factors predicting CSF shunt longevity.

Main Methods:

  • Retrospective review of medical records for 114 children with CSF shunts.
  • Analysis of computerized tomography scans for 83 patients.
  • Statistical analysis using chi-square, logistic regression, and life-table methods.

Main Results:

  • Frontally inserted shunts functioned significantly longer than parietally inserted shunts (p = 0.0008).
  • Catheter placement within the ipsilateral frontal horn was associated with significantly longer function (p = 0.03).
  • Insertion site and catheter position were significant predictors of shunt duration.

Conclusions:

  • The frontal insertion site is associated with superior CSF shunt longevity in pediatric patients.
  • Optimal catheter placement within the frontal horn may improve shunt performance.
  • These findings can inform surgical techniques to enhance shunt durability.

Related Concept Videos

Anatomy of the Brain: Ventricles01:18

Anatomy of the Brain: Ventricles

There are hollow fluid-filled cavities known as ventricles deep inside the human brain. There are two lateral ventricles, one in each cerebral hemisphere, and each has three different projections — the anterior, inferior, and posterior horns visible from the lateral side. A thin membrane called the septum pellucidum separates the two lateral ventricles. The slender third ventricle in the diencephalon is connected to each lateral ventricle via a channel called the interventricular foramen. The...
Cerebrospinal Fluid01:21

Cerebrospinal Fluid

Cerebrospinal fluid (CSF) is a colorless liquid that flows around the brain and the spinal cord, playing a vital role in the protection, support, and overall function of the central nervous system (CNS). CSF production, circulation, and absorption are tightly regulated processes essential for the brain and spinal cord to function properly.
CSF Production
CSF is produced mainly in the choroid plexus, a network of capillaries and ependymal cells located within the ventricular system of the brain.
Increased Intracranial Pressure l: Introduction01:14

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: Pathophysiology01:29

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: Introduction01:19

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: Pathophysiology01:22

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...