Analysis of the Sweat Response According to the Pathology in Neurologic Patients

Cardiovascular autonomic neuropathy (CAN) has been shown to be an important risk factor for cardiac diseases, particularly in diabetes.

CAN may be investigated by a battery of laboratory cardiovascular autonomic reflex tests(initially described by Ewing).

First screening for CAN (as proposed in diabetic patients) can be performed by assessing heart rate (HR) response to deep breathing, blood pressure (BP) and HR response to a 5 minutes stand test

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Key information

Conditions

Neurological Disorder Nervous System Diseases

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

About this study

Sweat glands are innervated by thin and un myelinated sympathetic C-fibers that can be impaired in neuropathies,especially length-dependent ones. Sweating dysfunction has been shown in several neurological peripheral disorders and it has been suggested that sweating function should be included among the diagnostic tests for the early detection of autonomic neuropathies. Several methods have been developed, but the lack of easy and quick tests to diagnose sweating dysfunction has restricted widespread use in clinical practice. Measurement of electrochemical skin conductance (ESC) using Sudoscan® is a new method for quick, non-invasive and quantitative assessment of sweating. This technique has demonstrated its usefulness in detecting autonomic and small fiber neuropathy, especially in diabetic patients.The aim of this study was to evaluate the performance of the laboratory battery of CV tests and of sweating dysfunction by Sudoscan®, alone or in combination, to differentiate MSA-P from PD. Among the CV tests, the present study particularly looked at those tests already recommended as screening bedside tests in diabetic patients (HR variations with deep breathing and BP variations during stand test) ; these tests are rapid and easy to perform. HR variations with deep breathing depend on parasympathetic tone and BP variations depend on vasomotor sympathetic response.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

Patients with MSA-P or PD

Exclusion criteria

Treatment and study plan

sweating function

Procedure

Sweating dysfunction by Sudoscan

Other names: sweating dysfunction by Sudoscan

Cardiovascular function

Procedure

Cardiovascular (CV) tests

Primary outcomes

Sweating autonomic test

Time frame: baseline

Evaluate the performance of the laboratory battery of CV tests and of sweating dysfunction to differentiate MSA-P from PD

Sponsors and collaborators

Lead sponsor

University Hospital, Toulouse

Other

Registry information

Official study title

Analysis of the Sweat Response According to the Pathology in Neurologic

Acronym: Sudoscan

Important dates

Study start: 2015
Primary completion: 2017
Study completion: 2017
First posted: Aug 21, 2018
Registry last updated: Aug 21, 2018

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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