NCT00001201

Brief Summary

The peripheral nervous system is the portion of the nervous system outside of the brain and spinal cord. It includes the 12 pairs of cranial nerves, 31 pairs of spinal nerves and their branches, nerves responsible for sensation and maintenance of normal body functions (sympathetic and parasympathetic nerves). Years of research using clinical examinations, microscopic examinations, and electrophysiology have made the peripheral nervous system the best-studied and most available portion of the nervous system. However, even with all of the extensive studies conducted on the peripheral nervous system, many conditions remain unclassified. The EMG Laboratory at the NIH concentrates on studying disorders of the peripheral nervous system. This protocol was designed to allow the EMG Laboratory to; I) Learn more about established diseases of the peripheral nervous system II) Identify and characterize new diseases of the peripheral nervous system III) Assess current techniques in the diagnosis of diseases of the peripheral nervous system IV) Refine old methods and develop new ones for the diagnosis of diseases of the peripheral nervous system.

Trial Health

87
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
1,500

participants targeted

Target at P75+ for all trials

Timeline
Completed

Started Oct 1984

Longer than P75 for all trials

Geographic Reach
1 country

1 active site

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

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Study Timeline

Key milestones and dates

Study Start

First participant enrolled

October 1, 1984

Completed
15.1 years until next milestone

First Submitted

Initial submission to the registry

November 3, 1999

Completed
1 day until next milestone

First Posted

Study publicly available on registry

November 4, 1999

Completed
3 years until next milestone

Study Completion

Last participant's last visit for all outcomes

November 1, 2002

Completed
Last Updated

March 4, 2008

Status Verified

November 1, 2002

First QC Date

November 3, 1999

Last Update Submit

March 3, 2008

Conditions

Keywords

Nerve Conduction StudiesEMGNormal VolunteerElectrophysiologyPeripheral NeuropathiesMyopathies

Eligibility Criteria

Sexall
Healthy VolunteersYes
Age GroupsChild (0-17), Adult (18-64), Older Adult (65+)
Patients with disorders of the peripheral nervous system, including neuropathies, myopathies, or defective neuromuscular transmission. Normal age-matched volunteers, including some from within a neurologic population.

Contact the study team to discuss eligibility requirements. They can help determine if this study is right for you.

Sponsors & Collaborators

Study Sites (1)

National Institute of Neurological Disorders and Stroke (NINDS)

Bethesda, Maryland, 20892, United States

Location

Related Publications (3)

  • Dyck PJ, Oviatt KF, Lambert EH. Intensive evaluation of referred unclassified neuropathies yields improved diagnosis. Ann Neurol. 1981 Sep;10(3):222-6. doi: 10.1002/ana.410100304.

    PMID: 7294727BACKGROUND
  • Nielsen VK. Pathophysiology of hemifacial spasm: I. Ephaptic transmission and ectopic excitation. Neurology. 1984 Apr;34(4):418-26. doi: 10.1212/wnl.34.4.418.

    PMID: 6322048BACKGROUND
  • Pollock M, Nukada H, Taylor P, Donaldson I, Carroll G. Comparison between fascicular and whole sural nerve biopsy. Ann Neurol. 1983 Jan;13(1):65-8. doi: 10.1002/ana.410130114.

    PMID: 6830168BACKGROUND

MeSH Terms

Conditions

Neuromuscular DiseasesPeripheral Nervous System DiseasesMuscular Diseases

Condition Hierarchy (Ancestors)

Nervous System DiseasesMusculoskeletal Diseases

Study Design

Study Type
observational
Sponsor Type
NIH

Study Record Dates

First Submitted

November 3, 1999

First Posted

November 4, 1999

Study Start

October 1, 1984

Study Completion

November 1, 2002

Last Updated

March 4, 2008

Record last verified: 2002-11

Locations