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Related Experiment Videos

Elevated cortical venous pressure in hydrocephalus.

M E Castro1, H D Portnoy, J Maesaka

  • 1Department of Surgery (Neurosurgery), St. Joseph Mercy Hospital, Pontiac, Michigan.

Neurosurgery
|August 1, 1991
PubMed
Summary
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Elevated cortical vein pressure in hydrocephalic dogs suggests a role in cerebrospinal fluid (CSF) buildup. This indicates CSF absorption may occur via transcapillary or transvenular routes.

Area of Science:

  • Neuroscience
  • Cerebrospinal Fluid Dynamics
  • Vascular Biology

Background:

  • Hydrocephalus is characterized by increased cerebrospinal fluid (CSF) pressure.
  • The relationship between CSF hydrodynamics and the cerebrovascular system is not fully understood.
  • Cortical vein (CV) pressure has not been previously measured in hydrocephalus.

Purpose of the Study:

  • To investigate CSF hydrodynamics in normal and hydrocephalic dogs.
  • To determine transmantle and transparenchymal pressures.
  • To explore the role of cerebrovascular pressure in hydrocephalus.

Main Methods:

  • Measurements of transmantle and transparenchymal pressures in normal and hydrocephalic dogs.
  • Pressure monitoring in lateral ventricles (LV), subarachnoid space, cisterna magna, sagittal sinus, and femoral artery.

Related Experiment Videos

  • Ventricular volume assessment using computed tomography.

    • Main Results:

    • Hydrocephalic dogs showed significantly increased LV volume (5.1 vs 1.3 ml).
    • Elevated pressures were observed in the LV, subarachnoid space, and sagittal sinus of hydrocephalic dogs.
    • Cortical vein (CV) pressure was markedly elevated in hydrocephalic animals (21.5 vs 11.7 mm Hg).

    Conclusions:

    • Elevated CV pressure may contribute to the development and maintenance of hydrocephalus.
    • The study suggests transcapillary or transvenular absorption as a pathway for CSF.
    • Understanding these pressures is crucial for hydrocephalus research and treatment.