Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Urologic function after experimental cauda equina compression. Cystometrograms versus cortical-evoked potentials.

R B Delamarter1, H H Bohlman, D Bodner

  • 1Division of Orthopaedic Surgery, UCLA School of Medicine.

Spine
|September 1, 1990
PubMed
Summary
This summary is machine-generated.

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Pineal gland calcification under hypoxic conditions.

Physiological research·2020
Same author

[Total and unicompartmental knee replacement. Patient-specific Instrumentation].

Der Orthopade·2016
Same author

Iron-rich complexes in human spleen in hereditary spherocytosis.

Bratislavske lekarske listy·2012
Same author

Iron accumulation in human spleen in autoimmune thrombocytopenia and hereditary spherocytosis.

Bratislavske lekarske listy·2012
Same author

Angiomyofibroblastoma of the cervix uteri: a case report.

Klinicka onkologie : casopis Ceske a Slovenske onkologicke spolecnosti·2011
Same author

[Significance of the sentinel lymph node biopsy in early breast carcinomas].

Rozhledy v chirurgii : mesicnik Ceskoslovenske chirurgicke spolecnosti·2010
Same journal

Response to Preoperative Steroid Injections Can Predict Early Outcomes in Patients Undergoing Fusion for Degenerative Spondylolisthesis.

Spine·2026
Same journal

Comparing those Most Satisfied versus Least Satisfied Following Surgery for Cervical Spondylotic Myelopathy: Are there Differences in Baseline Characteristics?

Spine·2026
Same journal

Pseudoarthrosis After Posterior Spinal Fusion in Adolescent Idiopathic Scoliosis: A Multicenter Analysis of Revision Strategies and Outcomes.

Spine·2026
Same journal

To the Editor "Low-Density Lipoprotein Cholesterol and Statin Usage Are Associated With Rates of Pseudarthrosis Following Single-Level Posterior Lumbar Interbody Fusion" by Lavu et al.

Spine·2026
Same journal

Sarcopenia Increases Adjacent Segment Degeneration Risk within 3 Years of Anterior Cervical Discectomy and Fusion.

Spine·2026
Same journal

Two-Year Cervical Alignment Trajectories and Associated Radiographic Factors after Posterior Spinal Fusion for Lenke Type 1 Adolescent Idiopathic Scoliosis.

Spine·2026
See all related articles

Cortical evoked potentials (CEPs) are the most sensitive indicator of cauda equina compression, detecting neural changes before significant bladder dysfunction occurs. Severe compression leads to nerve root atrophy and incontinence.

Area of Science:

  • Veterinary Neurology
  • Spinal Cord Research

Background:

  • Cauda equina compression can lead to significant neurological deficits.
  • Understanding the sensitivity of diagnostic tools is crucial for early intervention.

Purpose of the Study:

  • To evaluate the sensitivity of cystometrograms (CMGs) and cortical evoked potentials (CEPs) in detecting varying degrees of cauda equina compression.
  • To correlate compression severity with histological and vascular changes.

Main Methods:

  • Beagle dogs underwent laminectomy and graded cauda equina constriction (25%, 50%, 75%).
  • Cystometrograms and cortical evoked potentials were monitored pre- and post-operatively.
  • Histological and vascular examinations (Spalteholz technique) were performed post-mortem.

Related Experiment Videos

Main Results:

  • Mild CEP changes occurred with 25% constriction; significant CEP changes and venous congestion with 50%.
  • 75% constriction caused severe CMG changes (detrusor areflexia, incontinence), marked CEP deterioration, arterial narrowing, and nerve root atrophy.
  • CEPs were more sensitive than CMGs in detecting early neural compression.

Conclusions:

  • Cortical evoked potentials are a highly sensitive predictor of neural compression in the cauda equina.
  • Bladder dysfunction (detrusor areflexia) correlates with blocked axoplasmic flow, while sensory changes correlate with neurovenous congestion.