Interscalene block using ultrasound guidance: impact of experience on resident performance
Identifieur interne : 001E96 ( Istex/Corpus ); précédent : 001E95; suivant : 001E97Interscalene block using ultrasound guidance: impact of experience on resident performance
Auteurs : S. L. Orebaugh ; B. A. Williams ; M. L. Kentor ; M. A. Bolland ; S. K. Mosier ; T. P. NowakSource :
- Acta Anaesthesiologica Scandinavica [ 0001-5172 ] ; 2009-11.
English descriptors
- KwdEn :
- Acta, Acta anaesthesiol scand, Acute complications, American society, Anesth pain, Anesthesia, Anesthesiologist, Anesthesiology, Anesthesiology residents, Anesthetic, Appropriate motor stimulation, Authors journal compilation, Block needle, Block success rate, Block success rates, Brachial plexus, Data collection, Exact test, General anesthesia, Heterogeneous group, Imaging, Imaging times, Interscalene, Interscalene block, Interscalene groove, Junior trainees, Local anesthetic, Median, Motor function, Motor stimulation, Needle insertion, Nerve blockade, Nerve image, Nerve stimulation, Peripheral blocks, Pittsburgh upmc, Plexus, Primary objective, Process time outcomes, Regional anesthesia, Rotation week, Sample size, Senior trainees, Sensory motor function, Small aliquots, Subclavian artery, Success rates, Successful blocks, Supraclavicular region, Time differences, Time interval, Time intervals, Total block time, Trainee, Ultrasound, Ultrasound guidance.
- Teeft :
- Acta, Acta anaesthesiol scand, Acute complications, American society, Anesth pain, Anesthesia, Anesthesiologist, Anesthesiology, Anesthesiology residents, Anesthetic, Appropriate motor stimulation, Authors journal compilation, Block needle, Block success rate, Block success rates, Brachial plexus, Data collection, Exact test, General anesthesia, Heterogeneous group, Imaging, Imaging times, Interscalene, Interscalene block, Interscalene groove, Junior trainees, Local anesthetic, Median, Motor function, Motor stimulation, Needle insertion, Nerve blockade, Nerve image, Nerve stimulation, Peripheral blocks, Pittsburgh upmc, Plexus, Primary objective, Process time outcomes, Regional anesthesia, Rotation week, Sample size, Senior trainees, Sensory motor function, Small aliquots, Subclavian artery, Success rates, Successful blocks, Supraclavicular region, Time differences, Time interval, Time intervals, Total block time, Trainee, Ultrasound, Ultrasound guidance.
Abstract
Background: We evaluated the weekly progress of anesthesiology residents performing an interscalene block with ultrasound guidance (UG) for block success rates and for the specific time intervals: (i) time to image the brachial plexus and (ii) time from insertion of the block needle until motor stimulation occurred. Our primary objective was to characterize the influence of experience over the course of the regional anesthesia rotation on the performance of a UG interscalene block by anesthesiology residents.
Url:
DOI: 10.1111/j.1399-6576.2009.02048.x
Links to Exploration step
ISTEX:858D7D5978BC56B317A09BC2C161CFFD68956548Le document en format XML
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Kentor</name><affiliation><mods:affiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</mods:affiliation></affiliation></author><author><name sortKey="Bolland, M A" sort="Bolland, M A" uniqKey="Bolland M" first="M. A." last="Bolland">M. A. Bolland</name><affiliation><mods:affiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</mods:affiliation></affiliation></author><author><name sortKey="Mosier, S K" sort="Mosier, S K" uniqKey="Mosier S" first="S. K." last="Mosier">S. K. Mosier</name><affiliation><mods:affiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</mods:affiliation></affiliation></author><author><name sortKey="Nowak, T P" sort="Nowak, T P" uniqKey="Nowak T" first="T. P." last="Nowak">T. P. 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Our primary objective was to characterize the influence of experience over the course of the regional anesthesia rotation on the performance of a UG interscalene block by anesthesiology residents.</div></front></TEI><istex><corpusName>wiley</corpusName><keywords><teeft><json:string>trainee</json:string><json:string>ultrasound</json:string><json:string>interscalene</json:string><json:string>plexus</json:string><json:string>nerve stimulation</json:string><json:string>anesthesia</json:string><json:string>time intervals</json:string><json:string>anesthesiology</json:string><json:string>success rates</json:string><json:string>interscalene block</json:string><json:string>anesthesiologist</json:string><json:string>acta</json:string><json:string>median</json:string><json:string>regional anesthesia</json:string><json:string>time interval</json:string><json:string>ultrasound guidance</json:string><json:string>anesth pain</json:string><json:string>process time outcomes</json:string><json:string>block success rates</json:string><json:string>rotation week</json:string><json:string>successful blocks</json:string><json:string>nerve image</json:string><json:string>acta anaesthesiol scand</json:string><json:string>senior trainees</json:string><json:string>anesthesiology residents</json:string><json:string>anesthetic</json:string><json:string>imaging</json:string><json:string>appropriate motor stimulation</json:string><json:string>local anesthetic</json:string><json:string>sample size</json:string><json:string>interscalene groove</json:string><json:string>peripheral blocks</json:string><json:string>american society</json:string><json:string>supraclavicular region</json:string><json:string>subclavian artery</json:string><json:string>motor stimulation</json:string><json:string>small aliquots</json:string><json:string>acute complications</json:string><json:string>needle insertion</json:string><json:string>motor function</json:string><json:string>sensory motor function</json:string><json:string>general anesthesia</json:string><json:string>block needle</json:string><json:string>brachial plexus</json:string><json:string>block success rate</json:string><json:string>data collection</json:string><json:string>time differences</json:string><json:string>exact test</json:string><json:string>total block time</json:string><json:string>pittsburgh upmc</json:string><json:string>authors journal compilation</json:string><json:string>primary objective</json:string><json:string>imaging times</json:string><json:string>heterogeneous group</json:string><json:string>nerve blockade</json:string><json:string>junior trainees</json:string></teeft></keywords><author><json:item><name>S. L. OREBAUGH</name><affiliations><json:string>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</json:string></affiliations></json:item><json:item><name>B. A. WILLIAMS</name><affiliations><json:string>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</json:string></affiliations></json:item><json:item><name>M. L. KENTOR</name><affiliations><json:string>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</json:string></affiliations></json:item><json:item><name>M. A. BOLLAND</name><affiliations><json:string>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</json:string></affiliations></json:item><json:item><name>S. K. MOSIER</name><affiliations><json:string>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</json:string></affiliations></json:item><json:item><name>T. P. NOWAK</name><affiliations><json:string>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</json:string></affiliations></json:item></author><articleId><json:string>AAS2048</json:string></articleId><arkIstex>ark:/67375/WNG-KS27RP7C-9</arkIstex><language><json:string>eng</json:string></language><originalGenre><json:string>article</json:string></originalGenre><abstract>Background: We evaluated the weekly progress of anesthesiology residents performing an interscalene block with ultrasound guidance (UG) for block success rates and for the specific time intervals: (i) time to image the brachial plexus and (ii) time from insertion of the block needle until motor stimulation occurred. Our primary objective was to characterize the influence of experience over the course of the regional anesthesia rotation on the performance of a UG interscalene block by anesthesiology residents.</abstract><qualityIndicators><score>7.153</score><pdfWordCount>4241</pdfWordCount><pdfCharCount>26039</pdfCharCount><pdfVersion>1.3</pdfVersion><pdfPageCount>7</pdfPageCount><pdfPageSize>595.276 x 782.362 pts</pdfPageSize><refBibsNative>true</refBibsNative><abstractWordCount>76</abstractWordCount><abstractCharCount>514</abstractCharCount><keywordCount>0</keywordCount></qualityIndicators><title>Interscalene block using ultrasound guidance: impact of experience on resident performance</title><pmid><json:string>19594465</json:string></pmid><genre><json:string>article</json:string></genre><host><title>Acta Anaesthesiologica Scandinavica</title><language><json:string>unknown</json:string></language><doi><json:string>10.1111/(ISSN)1399-6576</json:string></doi><issn><json:string>0001-5172</json:string></issn><eissn><json:string>1399-6576</json:string></eissn><publisherId><json:string>AAS</json:string></publisherId><volume>53</volume><issue>10</issue><pages><first>1268</first><last>1274</last><total>7</total></pages><genre><json:string>journal</json:string></genre></host><namedEntities><unitex><date><json:string>2009</json:string></date><geogName></geogName><orgName><json:string>SPSS Inc., Chicago</json:string><json:string>Quality Management Committee of the University of Pittsburgh Medical Center</json:string><json:string>Acta Anaesthesiologica Scandinavica Foundation</json:string><json:string>American Society of Regional Anesthesia Recommendations for Education</json:string><json:string>University of Pittsburgh Internal Review Board</json:string><json:string>UPMC</json:string><json:string>NOWAK Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA Background</json:string><json:string>IRB</json:string></orgName><orgName_funder></orgName_funder><orgName_provider></orgName_provider><persName></persName><placeName><json:string>Bethlehem</json:string><json:string>PA</json:string></placeName><ref_url></ref_url><ref_bibl><json:string>Konrad et al.</json:string><json:string>Sites et al.</json:string><json:string>S. L. Orebaugh et al.</json:string></ref_bibl><bibl></bibl></unitex></namedEntities><ark><json:string>ark:/67375/WNG-KS27RP7C-9</json:string></ark><categories><wos><json:string>1 - science</json:string><json:string>2 - anesthesiology</json:string></wos><scienceMetrix><json:string>1 - health sciences</json:string><json:string>2 - clinical medicine</json:string><json:string>3 - anesthesiology</json:string></scienceMetrix><scopus><json:string>1 - Health Sciences</json:string><json:string>2 - Medicine</json:string><json:string>3 - Anesthesiology and Pain Medicine</json:string><json:string>1 - Health Sciences</json:string><json:string>2 - Medicine</json:string><json:string>3 - General Medicine</json:string></scopus></categories><publicationDate>2009</publicationDate><copyrightDate>2009</copyrightDate><doi><json:string>10.1111/j.1399-6576.2009.02048.x</json:string></doi><id>858D7D5978BC56B317A09BC2C161CFFD68956548</id><score>1</score><fulltext><json:item><extension>pdf</extension><original>true</original><mimetype>application/pdf</mimetype><uri>https://api.istex.fr/document/858D7D5978BC56B317A09BC2C161CFFD68956548/fulltext/pdf</uri></json:item><json:item><extension>zip</extension><original>false</original><mimetype>application/zip</mimetype><uri>https://api.istex.fr/document/858D7D5978BC56B317A09BC2C161CFFD68956548/fulltext/zip</uri></json:item><istex:fulltextTEI uri="https://api.istex.fr/document/858D7D5978BC56B317A09BC2C161CFFD68956548/fulltext/tei"><teiHeader><fileDesc><titleStmt><title level="a" type="main">Interscalene block using ultrasound guidance: impact of experience on resident performance</title></titleStmt><publicationStmt><authority>ISTEX</authority><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><availability><licence>© 2009 The Authors. Journal compilation © 2009 The Acta Anaesthesiologica Scandinavica Foundation</licence></availability><date type="published" when="2009-11"></date></publicationStmt><notesStmt><note type="content-type" subtype="article" source="article" scheme="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</note><note type="publication-type" subtype="journal" scheme="https://publication-type.data.istex.fr/ark:/67375/JMC-0GLKJH51-B">journal</note></notesStmt><sourceDesc><biblStruct type="article"><analytic><title level="a" type="main">Interscalene block using ultrasound guidance: impact of experience on resident performance</title><title level="a" type="short">Ultrasound‐guided interscalene block</title><author xml:id="author-0000"><persName><forename type="first">S. L.</forename><surname>OREBAUGH</surname></persName><affiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</affiliation></author><author xml:id="author-0001"><persName><forename type="first">B. A.</forename><surname>WILLIAMS</surname></persName><affiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</affiliation></author><author xml:id="author-0002"><persName><forename type="first">M. L.</forename><surname>KENTOR</surname></persName><affiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</affiliation></author><author xml:id="author-0003"><persName><forename type="first">M. A.</forename><surname>BOLLAND</surname></persName><affiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</affiliation></author><author xml:id="author-0004"><persName><forename type="first">S. K.</forename><surname>MOSIER</surname></persName><affiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</affiliation></author><author xml:id="author-0005"><persName><forename type="first">T. P.</forename><surname>NOWAK</surname></persName><affiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</affiliation></author><idno type="istex">858D7D5978BC56B317A09BC2C161CFFD68956548</idno><idno type="ark">ark:/67375/WNG-KS27RP7C-9</idno><idno type="DOI">10.1111/j.1399-6576.2009.02048.x</idno><idno type="unit">AAS2048</idno><idno type="supplier">2048</idno><idno type="toTypesetVersion">file:AAS.AAS2048.pdf</idno></analytic><monogr><title level="j" type="main">Acta Anaesthesiologica Scandinavica</title><title level="j" type="alt">ACTA ANAESTHESIOLOGICA SCANDINAVICA</title><idno type="pISSN">0001-5172</idno><idno type="eISSN">1399-6576</idno><idno type="book-DOI">10.1111/(ISSN)1399-6576</idno><idno type="book-part-DOI">10.1111/aas.2009.53.issue-10</idno><idno type="product">AAS</idno><idno type="publisherDivision">ST</idno><imprint><biblScope unit="vol">53</biblScope><biblScope unit="issue">10</biblScope><biblScope unit="page" from="1268">1268</biblScope><biblScope unit="page" to="1274">1274</biblScope><biblScope unit="page-count">7</biblScope><publisher>Blackwell Publishing Ltd</publisher><pubPlace>Oxford, UK</pubPlace><date type="published" when="2009-11"></date></imprint></monogr></biblStruct></sourceDesc></fileDesc><profileDesc><abstract xml:lang="en" style="main"><p><hi rend="bold">Background: </hi> We evaluated the weekly progress of anesthesiology residents performing an interscalene block with ultrasound guidance (UG) for block success rates and for the specific time intervals: (i) time to image the brachial plexus and (ii) time from insertion of the block needle until motor stimulation occurred. Our primary objective was to characterize the influence of experience over the course of the regional anesthesia rotation on the performance of a UG interscalene block by anesthesiology residents.</p><p><hi rend="bold">Methods: </hi> Residents conducted an interscalene block with UG under the supervision of attending anesthesiologists experienced in this technique. Block efficacy, time intervals required to perform the block, and acute complications were recorded. We compared success rates over the course of the rotation, and analyzed process time data with respect to trainee level of experience, week of the trainee rotation, and patient body habitus.</p><p><hi rend="bold">Results: </hi> Twenty‐one trainees conducted 222 blocks over a consecutive 7‐month period. Block success rate was 97.3%, and did not change significantly over the course of the 4‐week rotation. Total block time and imaging time significantly decreased over the 4‐week rotation, while the needle insertion‐to‐stimulation time did not change. Slower imaging time was predicted by obesity.</p><p><hi rend="bold">Conclusion: </hi> The success rates for a UG interscalene block provided by supervised residents were initially high, and remained so throughout the 4‐week rotation. Trainees required less time to image the nerves and to perform the block over the course of the rotation.</p></abstract><textClass><keywords rend="tocHeading1"><term>REGIONAL ANAESTHESIA & PAIN THERAPY</term></keywords></textClass><langUsage><language ident="en"></language></langUsage></profileDesc></teiHeader></istex:fulltextTEI><json:item><extension>txt</extension><original>false</original><mimetype>text/plain</mimetype><uri>https://api.istex.fr/document/858D7D5978BC56B317A09BC2C161CFFD68956548/fulltext/txt</uri></json:item></fulltext><metadata><istex:metadataXml wicri:clean="Wiley, elements deleted: body"><istex:xmlDeclaration>version="1.0" encoding="UTF-8" standalone="yes"</istex:xmlDeclaration><istex:document><component version="2.0" type="serialArticle" xml:lang="en"><header><publicationMeta level="product"><publisherInfo><publisherName>Blackwell Publishing Ltd</publisherName><publisherLoc>Oxford, UK</publisherLoc></publisherInfo><doi origin="wiley" registered="yes">10.1111/(ISSN)1399-6576</doi><issn type="print">0001-5172</issn><issn type="electronic">1399-6576</issn><idGroup><id type="product" value="AAS"></id><id type="publisherDivision" value="ST"></id></idGroup><titleGroup><title type="main" sort="ACTA ANAESTHESIOLOGICA SCANDINAVICA">Acta Anaesthesiologica Scandinavica</title></titleGroup></publicationMeta><publicationMeta level="part" position="11010"><doi origin="wiley">10.1111/aas.2009.53.issue-10</doi><numberingGroup><numbering type="journalVolume" number="53">53</numbering><numbering type="journalIssue" number="10">10</numbering></numberingGroup><coverDate startDate="2009-11">November 2009</coverDate></publicationMeta><publicationMeta level="unit" type="article" position="6" status="forIssue"><doi origin="wiley">10.1111/j.1399-6576.2009.02048.x</doi><idGroup><id type="unit" value="AAS2048"></id><id type="supplier" value="2048"></id></idGroup><countGroup><count type="pageTotal" number="7"></count></countGroup><titleGroup><title type="tocHeading1">REGIONAL ANAESTHESIA & PAIN THERAPY</title></titleGroup><copyright>© 2009 The Authors. Journal compilation © 2009 The Acta Anaesthesiologica Scandinavica Foundation</copyright><eventGroup><event type="firstOnline" date="2009-07-07"></event><event type="publishedOnlineFinalForm" date="2009-10-06"></event><event type="xmlConverted" agent="Converter:BPG_TO_WML3G version:2.3.2 mode:FullText source:FullText result:FullText" date="2010-02-24"></event><event type="xmlConverted" agent="Converter:WILEY_ML3G_TO_WILEY_ML3GV2 version:3.8.8" date="2013-12-28"></event><event type="xmlConverted" agent="Converter:WML3G_To_WML3G version:4.1.7 mode:FullText,remove_FC" date="2014-10-14"></event></eventGroup><numberingGroup><numbering type="pageFirst" number="1268">1268</numbering><numbering type="pageLast" number="1274">1274</numbering></numberingGroup><correspondenceTo>Address:
<i>Steven L. Orebaugh</i>
Department of Anesthesiology
University of Pittsburgh
UPMC South Side
2000 Mary Street
Pittsburgh
PA 15203
e‐mail: <email normalForm="orebaughsl@anes.upmc.edu">orebaughsl@anes.upmc.edu</email></correspondenceTo><linkGroup><link type="toTypesetVersion" href="file:AAS.AAS2048.pdf"></link></linkGroup></publicationMeta><contentMeta><unparsedEditorialHistory>Accepted for publication 18 May 2009</unparsedEditorialHistory><countGroup><count type="figureTotal" number="0"></count><count type="tableTotal" number="3"></count><count type="formulaTotal" number="0"></count><count type="referenceTotal" number="10"></count><count type="wordTotal" number="5110"></count><count type="linksCrossRef" number="24"></count></countGroup><titleGroup><title type="main">Interscalene block using ultrasound guidance: impact of experience on resident performance</title><title type="shortAuthors">S. L. Orebaugh et al.</title><title type="short">Ultrasound‐guided interscalene block</title></titleGroup><creators><creator creatorRole="author" xml:id="cr1" affiliationRef="#a1"><personName><givenNames>S. L.</givenNames><familyName>OREBAUGH</familyName></personName></creator><creator creatorRole="author" xml:id="cr2" affiliationRef="#a1"><personName><givenNames>B. A.</givenNames><familyName>WILLIAMS</familyName></personName></creator><creator creatorRole="author" xml:id="cr3" affiliationRef="#a1"><personName><givenNames>M. L.</givenNames><familyName>KENTOR</familyName></personName></creator><creator creatorRole="author" xml:id="cr4" affiliationRef="#a1"><personName><givenNames>M. A.</givenNames><familyName>BOLLAND</familyName></personName></creator><creator creatorRole="author" xml:id="cr5" affiliationRef="#a1"><personName><givenNames>S. K.</givenNames><familyName>MOSIER</familyName></personName></creator><creator creatorRole="author" xml:id="cr6" affiliationRef="#a1"><personName><givenNames>T. P.</givenNames><familyName>NOWAK</familyName></personName></creator></creators><affiliationGroup><affiliation xml:id="a1"><unparsedAffiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</unparsedAffiliation></affiliation></affiliationGroup><abstractGroup><abstract type="main" xml:lang="en"><p><b>Background: </b> We evaluated the weekly progress of anesthesiology residents performing an interscalene block with ultrasound guidance (UG) for block success rates and for the specific time intervals: (i) time to image the brachial plexus and (ii) time from insertion of the block needle until motor stimulation occurred. Our primary objective was to characterize the influence of experience over the course of the regional anesthesia rotation on the performance of a UG interscalene block by anesthesiology residents.</p><p><b>Methods: </b> Residents conducted an interscalene block with UG under the supervision of attending anesthesiologists experienced in this technique. Block efficacy, time intervals required to perform the block, and acute complications were recorded. We compared success rates over the course of the rotation, and analyzed process time data with respect to trainee level of experience, week of the trainee rotation, and patient body habitus.</p><p><b>Results: </b> Twenty‐one trainees conducted 222 blocks over a consecutive 7‐month period. Block success rate was 97.3%, and did not change significantly over the course of the 4‐week rotation. Total block time and imaging time significantly decreased over the 4‐week rotation, while the needle insertion‐to‐stimulation time did not change. Slower imaging time was predicted by obesity.</p><p><b>Conclusion: </b> The success rates for a UG interscalene block provided by supervised residents were initially high, and remained so throughout the 4‐week rotation. Trainees required less time to image the nerves and to perform the block over the course of the rotation.</p></abstract></abstractGroup></contentMeta><noteGroup><note xml:id="fn1" numbered="no"><p>All authors' professional efforts were underwritten by department resources.</p></note></noteGroup></header></component></istex:document></istex:metadataXml><mods version="3.6"><titleInfo lang="en"><title>Interscalene block using ultrasound guidance: impact of experience on resident performance</title></titleInfo><titleInfo type="abbreviated" lang="en"><title>Ultrasound‐guided interscalene block</title></titleInfo><titleInfo type="alternative" contentType="CDATA" lang="en"><title>Interscalene block using ultrasound guidance: impact of experience on resident performance</title></titleInfo><name type="personal"><namePart type="given">S. L.</namePart><namePart type="family">OREBAUGH</namePart><affiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">B. A.</namePart><namePart type="family">WILLIAMS</namePart><affiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M. L.</namePart><namePart type="family">KENTOR</namePart><affiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">M. A.</namePart><namePart type="family">BOLLAND</namePart><affiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">S. K.</namePart><namePart type="family">MOSIER</namePart><affiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><name type="personal"><namePart type="given">T. P.</namePart><namePart type="family">NOWAK</namePart><affiliation>Department of Anesthesiology, University of Pittsburgh UPMC South Side, Pittsburgh, PA</affiliation><role><roleTerm type="text">author</roleTerm></role></name><typeOfResource>text</typeOfResource><genre type="article" displayLabel="article" authority="ISTEX" authorityURI="https://content-type.data.istex.fr" valueURI="https://content-type.data.istex.fr/ark:/67375/XTP-6N5SZHKN-D">article</genre><originInfo><publisher>Blackwell Publishing Ltd</publisher><place><placeTerm type="text">Oxford, UK</placeTerm></place><dateIssued encoding="w3cdtf">2009-11</dateIssued><edition>Accepted for publication 18 May 2009</edition><copyrightDate encoding="w3cdtf">2009</copyrightDate></originInfo><language><languageTerm type="code" authority="rfc3066">en</languageTerm><languageTerm type="code" authority="iso639-2b">eng</languageTerm></language><physicalDescription><extent unit="figures">0</extent><extent unit="tables">3</extent><extent unit="formulas">0</extent><extent unit="references">10</extent><extent unit="linksCrossRef">24</extent><extent unit="words">5110</extent></physicalDescription><abstract>Background: We evaluated the weekly progress of anesthesiology residents performing an interscalene block with ultrasound guidance (UG) for block success rates and for the specific time intervals: (i) time to image the brachial plexus and (ii) time from insertion of the block needle until motor stimulation occurred. Our primary objective was to characterize the influence of experience over the course of the regional anesthesia rotation on the performance of a UG interscalene block by anesthesiology residents.</abstract><abstract>Methods: Residents conducted an interscalene block with UG under the supervision of attending anesthesiologists experienced in this technique. Block efficacy, time intervals required to perform the block, and acute complications were recorded. We compared success rates over the course of the rotation, and analyzed process time data with respect to trainee level of experience, week of the trainee rotation, and patient body habitus.</abstract><abstract>Results: Twenty‐one trainees conducted 222 blocks over a consecutive 7‐month period. Block success rate was 97.3%, and did not change significantly over the course of the 4‐week rotation. Total block time and imaging time significantly decreased over the 4‐week rotation, while the needle insertion‐to‐stimulation time did not change. Slower imaging time was predicted by obesity.</abstract><abstract>Conclusion: The success rates for a UG interscalene block provided by supervised residents were initially high, and remained so throughout the 4‐week rotation. 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