Quantitative Ultrasonography and Electrical Impedance Myography: Speech and Swallowing Technologies for Use in Neurological Disorders
Overview
- Phase
- Not Applicable
- Intervention
- Not specified
- Conditions
- Amyotrophic Lateral Sclerosis (ALS)
- Sponsor
- Beth Israel Deaconess Medical Center
- Enrollment
- 100
- Locations
- 1
- Primary Endpoint
- Change in Muscle Health over 18 months by Standard Ultrasound
- Status
- Completed
- Last Updated
- 2 years ago
Overview
Brief Summary
This study is evaluating the use of two painless, non-invasive technologies in the assessment of muscle health over time in both healthy volunteers and patients who have diseases that affect the nervous system.
Detailed Description
Speech and swallowing abnormalities are important symptoms associated with disorders of the central nervous system, motor neuron disease (such as amyotrophic lateral sclerosis), myasthenia gravis, and primary muscle conditions. In addition to characterizing the evolution in muscle architecture that could underlie associated orofacial weakness, identifying new ways to measure these abnormalities is critical to the development and testing of novel treatment approaches. As painless, non-invasive, portable technologies, quantitative ultrasonography (QUS) and electrical impedance myography (EIM) could meet the need for objective measures of speech and swallowing dysfunction. In QUS, acoustic energy is applied to a muscle of interest; the resultant pictorial data are translated into a single value that reflects the health of the imaged muscle. Similarly, in EIM, a high-frequency, low-intensity alternating electrical current is applied to individual muscles, and the resulting voltages measured. Impedance values reflect changes in muscle architecture, including fiber atrophy, inflammation, and the replacement of muscle with fat or connective tissue. Both of these user-friendly methods can provide sensitive indicators of neuromuscular disease status when applied to the limbs. Although they have also been used to evaluate orofacial muscles in healthy volunteers and patients with primary muscle disorders, they have not yet been systematically studied in patients with a range of neurological conditions. When applied to muscles of the face and tongue, such tools could 1. Improve accuracy of early diagnosis; 2. Allow monitoring of speech and swallowing dysfunction over time; 3. Help individualize care; and 4. Serve as biomarkers in clinical trials. We propose that QUS and EIM will provide convenient, reliable, clinically meaningful surrogate markers of orofacial dysfunction in a variety of neurologic conditions.
Investigators
Seward Rutkove
Professor of Neurology
Beth Israel Deaconess Medical Center
Eligibility Criteria
Inclusion Criteria
- •Established, or clinically probable, neurologic diagnosis with at least the potential for associated bulbar dysfunction
- •Age 20-90 years
Exclusion Criteria
- •History or presence of a medical condition that substantially impacts bulbar function
- •Age under 20 or over 90 years
Outcomes
Primary Outcomes
Change in Muscle Health over 18 months by Standard Ultrasound
Time Frame: Baseline, Month 3, Month 6, Month 9, Month 12, Month 15, and Month 18
Selected muscles of the face, limbs, trunk, and tongue will be visualized with painless, non-invasive ultrasound; this measure will be performed in healthy volunteers and participants with neurological conditions
Secondary Outcomes
- Change in Muscle Health by Specialized Electrical Impedance Arrays(Baseline, Month 3, Month 6, Month 9, Month 12, Month 15, and Month 18)
- Change in Score on the Sydney Swallow Questionnaire (over 18 months)(Baseline, Month 3, Month 6, Month 9, Month 12, Month 15, and Month 18)
- Change in Score on the Amyotrophic Lateral Sclerosis Rating Scale - Revised (ALSFRS-R) (over 18 months)(Baseline, Month 3, Month 6, Month 9, Month 12, Month 15, and Month 18)
- Change in Number of Seconds It takes to Repeat Individual Words Ten Times (over 18 months)(Baseline, Month 3, Month 6, Month 9, Month 12, Month 15, and Month 18)
- Change in Score on the United Parkinson's Disease Rating Scale (UPDRS) (over 18 months)(Baseline, Month 3, Month 6, Month 9, Month 12, Month 15, and Month 18)
- Change in Number of Seconds It Takes to Swallow of 3 ounces of Water (over 18 months)(Baseline, Month 3, Month 6, Month 9, Month 12, Month 15, and Month 18)
- Change in Score on the Quantitative Myasthenia Gravis Scale (over 18 months)(Baseline, Month 3, Month 6, Month 9, Month 12, Month 15, and Month 18)
- Change in Muscle Health by Standard Concentric Needle Electromyography (EMG) (over 18 months)(Baseline, Month 3, Month 6, Month 9, Month 12, Month 15, and Month 18)