Functional magnetic stimulation of expiratory muscles: a noninvasive and new method for restoring cough
1 Spinal Cord Injury Service and 2 Medical Service, Veterans Affairs Palo Alto Health Care System, and 3 Division of Physical Medicine and Rehabilitation, Department of Functional Restoration, Stanford University School of Medicine, Palo Alto, California 94304 The purpose of this study was to ass...
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| Veröffentlicht in: | Journal of applied physiology (1985) 1998-04, Vol.84 (4), p.1144-1150 |
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| container_title | Journal of applied physiology (1985) |
| container_volume | 84 |
| creator | Lin, Vernon W. H Hsieh, Caleb Hsiao, Ian N Canfield, James |
| description | 1 Spinal Cord Injury Service
and 2 Medical Service, Veterans
Affairs Palo Alto Health Care System, and
3 Division of Physical Medicine
and Rehabilitation, Department of Functional Restoration, Stanford
University School of Medicine, Palo Alto, California 94304
The
purpose of this study was to assess the effectiveness of functional
magnetic stimulation (FMS) for producing expiratory function in normal
human subjects. Twelve able-bodied normal subjects were recruited for
this study. FMS of the expiratory muscles was performed by using a
magnetic stimulator and placing the magnetic coil along the lower
thoracic spine. Results showed that peak expired pressure, volume, and
flow rate generated by FMS at the end of normal inspiration (102.5 ± 13.62 cmH 2 O, 1.6 ± 0.16 liters, and 4.8 ± 0.35 l/s, respectively) were comparable to their
voluntary maximal levels ( P > 0.1).
The optimal coil placement was between T7 and T11, and the optimal
stimulation parameters were a frequency of 25 Hz and 70-80% of
maximal intensity. We conclude that
1 ) FMS of the lower thoracic nerves
in normal subjects resulted in a significant expiratory function
comparable to their voluntary maximum;
2 ) FMS was noninvasive and was well
tolerated by all subjects; and 3 )
FMS may be useful to produce cough in patients in critical care or
perioperative settings, or in patients with neurological disorders.
thoracic nerve stimulation; expired pressure; respiratory muscles; abdominal muscles |
| doi_str_mv | 10.1152/jappl.1998.84.4.1144 |
| format | Article |
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and 2 Medical Service, Veterans
Affairs Palo Alto Health Care System, and
3 Division of Physical Medicine
and Rehabilitation, Department of Functional Restoration, Stanford
University School of Medicine, Palo Alto, California 94304
The
purpose of this study was to assess the effectiveness of functional
magnetic stimulation (FMS) for producing expiratory function in normal
human subjects. Twelve able-bodied normal subjects were recruited for
this study. FMS of the expiratory muscles was performed by using a
magnetic stimulator and placing the magnetic coil along the lower
thoracic spine. Results showed that peak expired pressure, volume, and
flow rate generated by FMS at the end of normal inspiration (102.5 ± 13.62 cmH 2 O, 1.6 ± 0.16 liters, and 4.8 ± 0.35 l/s, respectively) were comparable to their
voluntary maximal levels ( P > 0.1).
The optimal coil placement was between T7 and T11, and the optimal
stimulation parameters were a frequency of 25 Hz and 70-80% of
maximal intensity. We conclude that
1 ) FMS of the lower thoracic nerves
in normal subjects resulted in a significant expiratory function
comparable to their voluntary maximum;
2 ) FMS was noninvasive and was well
tolerated by all subjects; and 3 )
FMS may be useful to produce cough in patients in critical care or
perioperative settings, or in patients with neurological disorders.
thoracic nerve stimulation; expired pressure; respiratory muscles; abdominal muscles</description><identifier>ISSN: 8750-7587</identifier><identifier>EISSN: 1522-1601</identifier><identifier>DOI: 10.1152/jappl.1998.84.4.1144</identifier><identifier>PMID: 9516177</identifier><identifier>CODEN: JAPHEV</identifier><language>eng</language><publisher>Bethesda, MD: Am Physiological Soc</publisher><subject>Action Potentials - physiology ; Adult ; Air breathing ; Biological and medical sciences ; Cough - physiopathology ; Electromagnetic Fields ; Fundamental and applied biological sciences. Psychology ; Humans ; Male ; Mouth - physiopathology ; Neural Conduction - physiology ; Respiratory Muscles - anatomy & histology ; Respiratory Muscles - physiopathology ; Respiratory system: anatomy, metabolism, gas exchange, ventilatory mechanics, respiratory hemodynamics ; Spinal Cord - physiopathology ; Thoracic Nerves - physiology ; Vertebrates: respiratory system</subject><ispartof>Journal of applied physiology (1985), 1998-04, Vol.84 (4), p.1144-1150</ispartof><rights>1998 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c475t-e8ae10249b20cf40caf04278af69c10297c59c65f2548b4f38ccb9dac863ae3a3</citedby><cites>FETCH-LOGICAL-c475t-e8ae10249b20cf40caf04278af69c10297c59c65f2548b4f38ccb9dac863ae3a3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><link.rule.ids>315,781,785,3040,27926,27927</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=2228992$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/9516177$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Lin, Vernon W. H</creatorcontrib><creatorcontrib>Hsieh, Caleb</creatorcontrib><creatorcontrib>Hsiao, Ian N</creatorcontrib><creatorcontrib>Canfield, James</creatorcontrib><title>Functional magnetic stimulation of expiratory muscles: a noninvasive and new method for restoring cough</title><title>Journal of applied physiology (1985)</title><addtitle>J Appl Physiol (1985)</addtitle><description>1 Spinal Cord Injury Service
and 2 Medical Service, Veterans
Affairs Palo Alto Health Care System, and
3 Division of Physical Medicine
and Rehabilitation, Department of Functional Restoration, Stanford
University School of Medicine, Palo Alto, California 94304
The
purpose of this study was to assess the effectiveness of functional
magnetic stimulation (FMS) for producing expiratory function in normal
human subjects. Twelve able-bodied normal subjects were recruited for
this study. FMS of the expiratory muscles was performed by using a
magnetic stimulator and placing the magnetic coil along the lower
thoracic spine. Results showed that peak expired pressure, volume, and
flow rate generated by FMS at the end of normal inspiration (102.5 ± 13.62 cmH 2 O, 1.6 ± 0.16 liters, and 4.8 ± 0.35 l/s, respectively) were comparable to their
voluntary maximal levels ( P > 0.1).
The optimal coil placement was between T7 and T11, and the optimal
stimulation parameters were a frequency of 25 Hz and 70-80% of
maximal intensity. We conclude that
1 ) FMS of the lower thoracic nerves
in normal subjects resulted in a significant expiratory function
comparable to their voluntary maximum;
2 ) FMS was noninvasive and was well
tolerated by all subjects; and 3 )
FMS may be useful to produce cough in patients in critical care or
perioperative settings, or in patients with neurological disorders.
thoracic nerve stimulation; expired pressure; respiratory muscles; abdominal muscles</description><subject>Action Potentials - physiology</subject><subject>Adult</subject><subject>Air breathing</subject><subject>Biological and medical sciences</subject><subject>Cough - physiopathology</subject><subject>Electromagnetic Fields</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Humans</subject><subject>Male</subject><subject>Mouth - physiopathology</subject><subject>Neural Conduction - physiology</subject><subject>Respiratory Muscles - anatomy & histology</subject><subject>Respiratory Muscles - physiopathology</subject><subject>Respiratory system: anatomy, metabolism, gas exchange, ventilatory mechanics, respiratory hemodynamics</subject><subject>Spinal Cord - physiopathology</subject><subject>Thoracic Nerves - physiology</subject><subject>Vertebrates: respiratory system</subject><issn>8750-7587</issn><issn>1522-1601</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1998</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNp1kEGP1CAYhonRrOPqP9CEgzFeOgKFAbyZjaMmm3hZz4Sh0LKhUKHd3fn3UmcyiQdPJN_7vN9HHgDeYrTFmJFP93qawhZLKbaCbmkdUvoMbGpEGrxD-DnYCM5Qw5ngL8GrUu4RqgjDV-BKMrzDnG9Av1-imX2KOsBR99HO3sAy-3EJeh3D5KB9mnzWc8pHOC7FBFs-Qw1jij4-6OIfLNSxg9E-wtHOQ-qgSxlmW2rDxx6atPTDa_DC6VDsm_N7DX7tv97dfG9uf377cfPltjGUs7mxQluMCJUHgoyjyGiHKOFCu500NZDcMGl2zBFGxYG6VhhzkJ02Ytdq2-r2Gnw47Z1y-r3UP6jRF2ND0NGmpSguOSMtFxWkJ9DkVEq2Tk3ZjzofFUZq9av--lWrXyWoomr1W2vvzvuXw2i7S-kstObvz7kuRgeXdTS-XDBCiJCSVOzjCRt8Pzz6bNU0HItPIfXH9fA_F-n_0f0Swp19mtfOpaKmzrV_AIsbqD8</recordid><startdate>19980401</startdate><enddate>19980401</enddate><creator>Lin, Vernon W. H</creator><creator>Hsieh, Caleb</creator><creator>Hsiao, Ian N</creator><creator>Canfield, James</creator><general>Am Physiological Soc</general><general>American Physiological Society</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope></search><sort><creationdate>19980401</creationdate><title>Functional magnetic stimulation of expiratory muscles: a noninvasive and new method for restoring cough</title><author>Lin, Vernon W. H ; Hsieh, Caleb ; Hsiao, Ian N ; Canfield, James</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c475t-e8ae10249b20cf40caf04278af69c10297c59c65f2548b4f38ccb9dac863ae3a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1998</creationdate><topic>Action Potentials - physiology</topic><topic>Adult</topic><topic>Air breathing</topic><topic>Biological and medical sciences</topic><topic>Cough - physiopathology</topic><topic>Electromagnetic Fields</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Humans</topic><topic>Male</topic><topic>Mouth - physiopathology</topic><topic>Neural Conduction - physiology</topic><topic>Respiratory Muscles - anatomy & histology</topic><topic>Respiratory Muscles - physiopathology</topic><topic>Respiratory system: anatomy, metabolism, gas exchange, ventilatory mechanics, respiratory hemodynamics</topic><topic>Spinal Cord - physiopathology</topic><topic>Thoracic Nerves - physiology</topic><topic>Vertebrates: respiratory system</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Lin, Vernon W. H</creatorcontrib><creatorcontrib>Hsieh, Caleb</creatorcontrib><creatorcontrib>Hsiao, Ian N</creatorcontrib><creatorcontrib>Canfield, James</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><jtitle>Journal of applied physiology (1985)</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Lin, Vernon W. H</au><au>Hsieh, Caleb</au><au>Hsiao, Ian N</au><au>Canfield, James</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Functional magnetic stimulation of expiratory muscles: a noninvasive and new method for restoring cough</atitle><jtitle>Journal of applied physiology (1985)</jtitle><addtitle>J Appl Physiol (1985)</addtitle><date>1998-04-01</date><risdate>1998</risdate><volume>84</volume><issue>4</issue><spage>1144</spage><epage>1150</epage><pages>1144-1150</pages><issn>8750-7587</issn><eissn>1522-1601</eissn><coden>JAPHEV</coden><abstract>1 Spinal Cord Injury Service
and 2 Medical Service, Veterans
Affairs Palo Alto Health Care System, and
3 Division of Physical Medicine
and Rehabilitation, Department of Functional Restoration, Stanford
University School of Medicine, Palo Alto, California 94304
The
purpose of this study was to assess the effectiveness of functional
magnetic stimulation (FMS) for producing expiratory function in normal
human subjects. Twelve able-bodied normal subjects were recruited for
this study. FMS of the expiratory muscles was performed by using a
magnetic stimulator and placing the magnetic coil along the lower
thoracic spine. Results showed that peak expired pressure, volume, and
flow rate generated by FMS at the end of normal inspiration (102.5 ± 13.62 cmH 2 O, 1.6 ± 0.16 liters, and 4.8 ± 0.35 l/s, respectively) were comparable to their
voluntary maximal levels ( P > 0.1).
The optimal coil placement was between T7 and T11, and the optimal
stimulation parameters were a frequency of 25 Hz and 70-80% of
maximal intensity. We conclude that
1 ) FMS of the lower thoracic nerves
in normal subjects resulted in a significant expiratory function
comparable to their voluntary maximum;
2 ) FMS was noninvasive and was well
tolerated by all subjects; and 3 )
FMS may be useful to produce cough in patients in critical care or
perioperative settings, or in patients with neurological disorders.
thoracic nerve stimulation; expired pressure; respiratory muscles; abdominal muscles</abstract><cop>Bethesda, MD</cop><pub>Am Physiological Soc</pub><pmid>9516177</pmid><doi>10.1152/jappl.1998.84.4.1144</doi><tpages>7</tpages></addata></record> |
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| ispartof | Journal of applied physiology (1985), 1998-04, Vol.84 (4), p.1144-1150 |
| issn | 8750-7587 1522-1601 |
| language | eng |
| recordid | cdi_pascalfrancis_primary_2228992 |
| source | MEDLINE; American Physiological Society; Alma/SFX Local Collection; EZB Electronic Journals Library |
| subjects | Action Potentials - physiology Adult Air breathing Biological and medical sciences Cough - physiopathology Electromagnetic Fields Fundamental and applied biological sciences. Psychology Humans Male Mouth - physiopathology Neural Conduction - physiology Respiratory Muscles - anatomy & histology Respiratory Muscles - physiopathology Respiratory system: anatomy, metabolism, gas exchange, ventilatory mechanics, respiratory hemodynamics Spinal Cord - physiopathology Thoracic Nerves - physiology Vertebrates: respiratory system |
| title | Functional magnetic stimulation of expiratory muscles: a noninvasive and new method for restoring cough |
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