Evaluation of the Diagnostic Contributions of Nerve Ultrasound in Chronic Inflammatory Demyelinating Polyneuropathy Associating Systemic Diseases (CIDP Echo-nerf) (CIDP echo-nerf)

Evaluation of the Diagnostic Contributions of Nerve Ultrasound in Chronic Inflammatory Demyelinating Polyneuropathy Associating Systemic Diseases

Chronic inflammatory demyelinating polyradiculoneuritis (CIDP) is an autoimmune disorder of the peripheral nervous system, most commonly affecting the myelin sheath. The pathophysiology of CIDP is not completely understood, but both humoral and cellular immunity appear to be involved in the genesis of this disease. Some diseases are particularly associated with CIDP such as diabetes, monoclonal gammopathies and hematological diseases.

CIDP can occur before, after or simultaneously with the onset of systemic diseases. The systemic diseases most often seen in association with polyneuropathies are lupus, Gougerot-Sjögren's syndrome and sarcoidosis.

Ultrasound of peripheral nerves is a useful and accessible tool. In CIDP, this examination can reveal diffuse or segmental nerve hypertrophy. In addition to the size of the nerve, this exploration analyzes the echogenicity and the aspect of the different fascicles within the nerve. S. Goedee et al have shown that nerve ultrasound has very good diagnostic parameters and low interobserver variability in the diagnosis of CIDP. F. Härtig et al suggests that nerve ultrasound can predict the therapeutic response and describes 3 main patterns: hypoechoic enlargement (active inflammation), nerve enlargement with hyperechoic add-on fascicles (axonal degeneration) and almost no enlargement ("cured" CIDP).

Study Overview

Detailed Description

CIDP may be progressive or relapsing, most frequently clinically symmetric, sensorimotor with proximal and distal involvement developing over at least 8 weeks but variants as distal, multifocal, focal, motor or sensory CIDP have been also described. Cell-mediated and humoral mechanisms act together in an aberrant immune response to cause damage to peripheral nerves but, by molecular mimicry it causes other autoimmune system diseases. This paper focuses on the intersection of CIDP and other autoimmune disease with an emphasis on shared pathology and mutually characteristics.

Study Type

Observational

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

      • Nîmes, France, 30029
        • CHU de Nimes

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Ages Eligible for Study

16 years and older (Adult, Older Adult)

Accepts Healthy Volunteers

No

Sampling Method

Non-Probability Sample

Study Population

Patients followed at Nîmes University Hospital between 2012 and 2021 with CIDP

Description

Inclusion Criteria:

  • Patients followed at Nîmes University Hospital between 2012 and 2021
  • Age > 18 years
  • Diagnosis of definite CIDP or possible CIDP according to the new EFNS/PNS 2021 criteria
  • Diagnosis of definite CIDP/CIDP possible with systemic diseases and respectively diagnosis of definite CIDP/CIDP possible for the control group confirmed by electroneuromyography, concordant with the clinical examination

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

  • Observational Models: Cohort
  • Time Perspectives: Retrospective

Cohorts and Interventions

Group / Cohort
Intervention / Treatment
CIDP associated with systemic diseases
Patients with CIDP associated with systemic diseases
pure observationnal study
CIDP without systemic diseases
Patients with CIDP without other systemic diseases
pure observationnal study

What is the study measuring?

Primary Outcome Measures

Outcome Measure
Measure Description
Time Frame
Median nerve cross-sectional area
Time Frame: Base line, Day 0
Comparison of median nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Base line, Day 0
ulnar nerve at wrist cross-sectional area
Time Frame: Base line, Day 0
Comparison of ulnar nerve at wrist cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Base line, Day 0
ulnar at mid-arm nerve cross-sectional area
Time Frame: Base line, Day 0
Comparison of ulnar nerve at mid-arm cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Base line, Day 0
ulnar nerve at elbow cross-sectional area
Time Frame: Base line, Day 0
Comparison of ulnar nerve at elbow cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Base line, Day 0
radial nerve cross-sectional area
Time Frame: Day of diagnosis of CIDP
Comparison of radial nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Day of diagnosis of CIDP
superficial radial branch nerve cross-sectional area
Time Frame: Base line, Day 0
Comparison of superficial radial branch nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Base line, Day 0
vagus nerve cross-sectional area
Time Frame: Base line, Day 0
Comparison of vagus nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Base line, Day 0
C6 root nerve cross-sectional area
Time Frame: Base line, Day 0
Comparison of C6 root nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Base line, Day 0
C5 root nerve cross-sectional area
Time Frame: Base line, Day 0
Comparison of C5 root nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Base line, Day 0
sural nerve cross-sectional area
Time Frame: Base line, Day 0
Comparison of sural nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Base line, Day 0
superficial fibula nerve cross-sectional area
Time Frame: Base line, Day 0
Comparison of superficial fibula nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Base line, Day 0
tibial nerve at ankle cross-sectional area
Time Frame: Base line, Day 0
Comparison of tibial nerve at ankle cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Base line, Day 0
popliteal nerve cross-sectional area
Time Frame: Base line, Day 0
Comparison of popliteal nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Base line, Day 0
fibular nerve at neck cross-sectional area
Time Frame: Base line, Day 0
Comparison of fibular nerve at neck cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Base line, Day 0
fibular at supra-neck nerve cross-sectional area
Time Frame: Base line, Day 0
Comparison of fibular at supra-neck nerve cross-sectional area on nerve ultrasound in patients with definite PIDC/PIDC with associated systemic disease with that of patients with PIDC/PIDC without systemic disease
Base line, Day 0

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Investigators

  • Study Director: Anissa MEGZARI, Centre Hospitalier Universitaire de Nîmes

Publications and helpful links

The person responsible for entering information about the study voluntarily provides these publications. These may be about anything related to the study.

General Publications

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (Actual)

March 15, 2022

Primary Completion (Estimated)

December 1, 2023

Study Completion (Estimated)

December 1, 2023

Study Registration Dates

First Submitted

February 15, 2022

First Submitted That Met QC Criteria

February 24, 2022

First Posted (Actual)

February 25, 2022

Study Record Updates

Last Update Posted (Actual)

April 5, 2024

Last Update Submitted That Met QC Criteria

April 4, 2024

Last Verified

April 1, 2024

More Information

Terms related to this study

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.

Clinical Trials on Chronic Inflammatory Demyelinating Polyradiculoneuropathy

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