Study Results
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View full resultsBasic Information
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COMPLETED
NA
17 participants
INTERVENTIONAL
2004-09-30
2017-10-31
Brief Summary
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Detailed Description
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The purpose of this trial is to determine if electrical stimulation of the expiratory muscles is capable of producing an effective cough on demand. According to the trial researchers, if successful, this technique will prevent the need for frequent patient suctioning - which often requires the constant presence of trained personnel. It will also allow spinal cord injured patients to clear their secretions more readily, thereby reducing the incidence of respiratory complications and associated illness and death.
In the trial, researchers will study 18 adults (18-70 years old) with spinal injuries (T5 level or higher), at least 12 months following the date of injury. After an evaluation of medical history, a brief physical examination, and initial testing, participants will have small electrodes (metal discs) placed - by a routine surgical procedure - over the surface of their spinal cords on the lower back to stimulate the expiratory muscles and restore cough.
Conditions
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Study Design
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NA
SINGLE_GROUP
TREATMENT
NONE
Study Groups
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Expiratory Muscle Stimulator
Procedure/Surgery: spinal cord stimulation to restore cough
Spinal Cord Stimulation to restore cough
Participants will have small electrodes (metal discs) placed - by a routine surgical procedure - over the surface of their spinal cords on the lower back to stimulate the expiratory muscles and restore cough. These electrodes are then activated at subsequent study visits using the external control unit.
Expiratory Muscle Stimulator
The expiratory muscle stimulator consists of three small electrodes (metal discs) implanted over the surface of their spinal cords on the lower back to stimulate the expiratory muscles and restore cough. These electrodes are connected to an implanted receiver in the abdomen or chest wall. The device is activated through an external antenna connected to an external control box.
Interventions
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Spinal Cord Stimulation to restore cough
Participants will have small electrodes (metal discs) placed - by a routine surgical procedure - over the surface of their spinal cords on the lower back to stimulate the expiratory muscles and restore cough. These electrodes are then activated at subsequent study visits using the external control unit.
Expiratory Muscle Stimulator
The expiratory muscle stimulator consists of three small electrodes (metal discs) implanted over the surface of their spinal cords on the lower back to stimulate the expiratory muscles and restore cough. These electrodes are connected to an implanted receiver in the abdomen or chest wall. The device is activated through an external antenna connected to an external control box.
Eligibility Criteria
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Inclusion Criteria
* Expiratory muscle weakness
Exclusion Criteria
* Active lung disease
* Brain disease
* Scoliosis, chest wall deformity, or marked obesity
18 Years
70 Years
ALL
No
Sponsors
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MetroHealth Medical Center
OTHER
Responsible Party
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Anthony F. Dimarco
Professor of Medicine
Principal Investigators
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Anthony F. DiMarco, MD
Role: PRINCIPAL_INVESTIGATOR
MetroHealth Medical Center
Locations
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MetroHealth Medical Center
Cleveland, Ohio, United States
Countries
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References
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DiMarco AF, Romaniuk JR, Supinski GS. Electrical activation of the expiratory muscles to restore cough. Am J Respir Crit Care Med. 1995 May;151(5):1466-71. doi: 10.1164/ajrccm.151.5.7735601.
DiMarco AF, Romaniuk JR, Kowalski KE, Supinski G. Pattern of expiratory muscle activation during lower thoracic spinal cord stimulation. J Appl Physiol (1985). 1999 Jun;86(6):1881-9. doi: 10.1152/jappl.1999.86.6.1881.
DiMarco AF, Romaniuk JR, Kowalski KE, Supinski G. Mechanical contribution of expiratory muscles to pressure generation during spinal cord stimulation. J Appl Physiol (1985). 1999 Oct;87(4):1433-9. doi: 10.1152/jappl.1999.87.4.1433.
DiMarco AF, Kowalski KE, Supinski G, Romaniuk JR. Mechanism of expiratory muscle activation during lower thoracic spinal cord stimulation. J Appl Physiol (1985). 2002 Jun;92(6):2341-6. doi: 10.1152/japplphysiol.01231.2001.
Romaniuk JR, Dick TE, Kowalski KE, Dimarco AF. Effects of pulse lung inflation on chest wall expiratory motor activity. J Appl Physiol (1985). 2007 Jan;102(1):485-91. doi: 10.1152/japplphysiol.00130.2006. Epub 2006 Sep 7.
Kowalski KE, Romaniuk JR, DiMarco AF. Changes in expiratory muscle function following spinal cord section. J Appl Physiol (1985). 2007 Apr;102(4):1422-8. doi: 10.1152/japplphysiol.00870.2006. Epub 2006 Dec 7.
DiMarco AF, Kowalski KE, Romaniuk JR. Effects of diaphragm activation on airway pressure generation during lower thoracic spinal cord stimulation. Respir Physiol Neurobiol. 2007 Oct 15;159(1):102-7. doi: 10.1016/j.resp.2007.06.007. Epub 2007 Jun 22.
DiMarco AF, Kowalski KE. Effects of chronic electrical stimulation on paralyzed expiratory muscles. J Appl Physiol (1985). 2008 Jun;104(6):1634-40. doi: 10.1152/japplphysiol.01321.2007. Epub 2008 Apr 10.
DiMarco AF, Kowalski KE, Geertman RT, Hromyak DR. Spinal cord stimulation: a new method to produce an effective cough in patients with spinal cord injury. Am J Respir Crit Care Med. 2006 Jun 15;173(12):1386-9. doi: 10.1164/rccm.200601-097CR. Epub 2006 Mar 16.
DiMarco AF, Kowalski KE, Geertman RT, Hromyak DR, Frost FS, Creasey GH, Nemunaitis GA. Lower thoracic spinal cord stimulation to restore cough in patients with spinal cord injury: results of a National Institutes of Health-Sponsored clinical trial. Part II: clinical outcomes. Arch Phys Med Rehabil. 2009 May;90(5):726-32. doi: 10.1016/j.apmr.2008.11.014.
DiMarco AF, Kowalski KE, Geertman RT, Hromyak DR. Lower thoracic spinal cord stimulation to restore cough in patients with spinal cord injury: results of a National Institutes of Health-sponsored clinical trial. Part I: methodology and effectiveness of expiratory muscle activation. Arch Phys Med Rehabil. 2009 May;90(5):717-25. doi: 10.1016/j.apmr.2008.11.013.
DiMarco AF, Kowalski KE, Hromyak DR, Geertman RT. Long-term follow-up of spinal cord stimulation to restore cough in subjects with spinal cord injury. J Spinal Cord Med. 2014 Jul;37(4):380-8. doi: 10.1179/2045772313Y.0000000152. Epub 2013 Nov 26.
DiMarco AF, Geertman RT, Nemunaitis GA, Kowalski KE. Impact of the cough stimulation system on the care burden and life quality of caregivers of tetraplegics. J Spinal Cord Med. 2023 Sep;46(5):778-788. doi: 10.1080/10790268.2022.2148845. Epub 2023 Apr 5.
DiMarco AF, Geertman RT, Nemunaitis GA, Kowalski KE. Comparison of disc and wire electrodes to restore cough via lower thoracic spinal cord stimulation. J Spinal Cord Med. 2022 May;45(3):354-363. doi: 10.1080/10790268.2021.1936388. Epub 2021 Jul 7.
Provided Documents
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Document Type: Study Protocol
Document Type: Statistical Analysis Plan
Document Type: Informed Consent Form
Other Identifiers
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IRB 98-00091
Identifier Type: -
Identifier Source: secondary_id
278855
Identifier Type: OTHER_GRANT
Identifier Source: secondary_id
IRB98-00091
Identifier Type: -
Identifier Source: org_study_id
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