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<article xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:mml="http://www.w3.org/1998/Math/MathML" dtd-version="1.0" article-type="research-article" xml:lang="en">
  <front>
    <journal-meta>
      <journal-id journal-id-type="nlm-ta">Arq Bras Cardiol</journal-id>
      <journal-title-group>
        <journal-title>Arquivos Brasileiros de Cardiologia</journal-title>
        <abbrev-journal-title abbrev-type="publisher">Arq. Bras. Cardiol.</abbrev-journal-title>
      </journal-title-group>
      <issn pub-type="ppub">0066-782X</issn>
      <issn pub-type="epub">1678-4170</issn>
      <publisher>
        <publisher-name>Sociedade Brasileira de Cardiologia</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id pub-id-type="publisher-id" specific-use="scielo-v3">RJ3JnQ3FWrLdyG3DD6htLyp</article-id>
      <article-id pub-id-type="publisher-id" specific-use="scielo-v2">S0066-782X2014002000016</article-id>
      <article-id pub-id-type="other">00016</article-id>
      <article-id pub-id-type="doi">10.5935/abc.20140119</article-id>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Image</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="en">Left Atrial Appendage Closure and the Figure-of-Eight
               Artifact</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Barberato</surname>
            <given-names>Silvio Henrique</given-names>
          </name>
          <xref ref-type="corresp" rid="c01"/>
        </contrib>
        <aff>
          <institution content-type="orgname">Centro de Diagn&#243;stico
                  Cardiovascular</institution>
          <addr-line>
            <named-content content-type="city">Curitiba</named-content>
            <named-content content-type="state">PR</named-content>
          </addr-line>
          <country>Brazil</country>
          <institution content-type="original">Cardioeco - Centro de Diagn&#243;stico
                  Cardiovascular, Curitiba, PR - Brazil</institution>
        </aff>
      </contrib-group>
      <author-notes>
        <corresp id="c01"><bold>Mailing Address: Silvio Henrique Barberato</bold>, Rua Rezala Sim&#227;o, 1316/ Casa
               28, Santa Quit&#233;ria. Postal Code 80330-180, Curitiba, PR - Brazil. E-mail:
                  <email>shbarberato@hotmail.com</email>
				</corresp>
        <fn fn-type="conflict">
          <p>
            <bold>Potential Conflict of Interest</bold>
          </p>
          <p>No potential conflict of interest relevant to this article was reported.</p>
        </fn>
      </author-notes>
      <pub-date pub-type="epub-ppub">
        <month>08</month>
        <year>2014</year>
      </pub-date>
      <volume>103</volume>
      <issue>2</issue>
      <fpage>e29</fpage>
      <lpage>e30</lpage>
      <history>
        <date date-type="received">
          <day>01</day>
          <month>06</month>
          <year>2014</year>
        </date>
        <date date-type="rev-recd">
          <day>13</day>
          <month>06</month>
          <year>2014</year>
        </date>
        <date date-type="accepted">
          <day>13</day>
          <month>06</month>
          <year>2014</year>
        </date>
      </history>
      <permissions>
        <license license-type="open-access" xlink:href="http://creativecommons.org/licenses/by-nc/3.0/">
          <license-p>This is an Open Access article distributed under the terms of the Creative
                  Commons Attribution Non-Commercial License which permits unrestricted
                  non-commercial use, distribution, and reproduction in any medium, provided the
                  original work is properly cited. </license-p>
        </license>
      </permissions>
      <kwd-group xml:lang="en">
        <kwd>Atrial Appendage/pathology</kwd>
        <kwd>Echocardiography</kwd>
      </kwd-group>
      <counts>
        <fig-count count="2"/>
        <table-count count="0"/>
        <equation-count count="0"/>
        <ref-count count="1"/>
        <page-count count="2"/>
      </counts>
    </article-meta>
  </front>
  <body>
    <p>After percutaneous left atrial appendage (LAA) closure with the Amplatzer cardiac plug
         (ACP), an intriguing image in the shape of the number eight (figure-of-eight) is frequently
         observed on electrocardiography. This phenomenon is an image artifact that results from an
         interaction between the metal mesh of the ACP and the ultrasound waves<xref ref-type="bibr" rid="B01">1</xref>. This finding should not be interpreted as a sign of incorrect ACP
         implantation.</p>
    <fig id="f01" fig-type="other">
      <label>Figure 1</label>
      <caption>
        <title>Echocardiography findings for a 72-year-old female patient who underwent
               percutaneous LAA closure with the ACP. (A) Transthoracic echocardiographic image in
               the 5-chamber apical plane with the figure-of-eight image (arrow) in the left atrium
               (LA); (B) Increased anterior inclination of the transducer and visualization of the
               figure-of-eight; (C) Transthoracic echocardiographic image in the 3-chamber
               parasternal plane; (D) Transesophageal echocardiographic image with the
               figure-of-eight in the 5&#176; projection (left), but not in the 95&#176; projection (right) of
               the LAA.</title>
      </caption>
      <graphic xlink:href="1678-4170-abc-103-02-0e29-40119-gf01.jpg"/></fig>
  </body>
  <back>
    <fn-group>
      <fn fn-type="other">
        <p>
          <bold>Study Association</bold>
        </p>
        <p>his study is not associated with any thesis or dissertation work.</p>
      </fn>
      <fn fn-type="con">
        <p>
          <bold>Author contributions</bold>
        </p>
        <p>Conception and design of the research, Acquisition of data, Analysis and
               interpretation of the data, Statistical analysis, Writing of the manuscript and
               Critical revision of the manuscript for intellectual content: Barberato SH.</p>
      </fn>
      <fn fn-type="financial-disclosure">
        <p>
          <bold>Sources of Funding</bold>
        </p>
        <p>There were no external funding sources for this study.</p>
      </fn>
    </fn-group>
    <ref-list>
      <title>Reference</title>
      <ref id="B01">
        <label>1</label>
        <mixed-citation>Bertrand PB, Grieten L, De Meester P, Verbrugge FH, Mullens W, Verhaert
               D et al. Relevance of the figure-of-eight artifact on echocardiography after
               percutaneous left atrial appendage closure with the Amplatzer cardiac plug. J Am Soc
               Echocardiogr. 2014;27(3):323-8.e1.</mixed-citation>
        <element-citation publication-type="journal">
          <person-group person-group-type="author">
            <name>
              <surname>Bertrand</surname>
              <given-names>PB</given-names>
            </name>
            <name>
              <surname>Grieten</surname>
              <given-names>L</given-names>
            </name>
            <name>
              <surname>De Meester</surname>
              <given-names>P</given-names>
            </name>
            <name>
              <surname>Verbrugge</surname>
              <given-names>FH</given-names>
            </name>
            <name>
              <surname>Mullens</surname>
              <given-names>W</given-names>
            </name>
            <name>
              <surname>Verhaert</surname>
              <given-names>D</given-names>
            </name>
            <etal>et al</etal>
          </person-group>
          <article-title xml:lang="en">Relevance of the figure-of-eight artifact on
                  echocardiography after percutaneous left atrial appendage closure with the
                  Amplatzer cardiac plug</article-title>
          <source>J Am Soc Echocardiogr</source>
          <year>2014</year>
          <volume>27</volume>
          <issue>3</issue>
          <fpage>323</fpage>
          <lpage>328.e1</lpage>
        </element-citation>
      </ref>
    </ref-list>
  </back>
  <sub-article article-type="translation" id="SA1" xml:lang="pt">
    <front-stub>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Imagem</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title xml:lang="pt">Oclus&#227;o do Ap&#234;ndice Atrial Esquerdo e o Artefato da "Figura
               do Oito"</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <name>
            <surname>Barberato</surname>
            <given-names>Silvio Henrique</given-names>
          </name>
          <xref ref-type="corresp" rid="c02"/>
        </contrib>
        <aff>
          <institution content-type="orgname">Centro de Diagn&#243;stico
                  Cardiovascular</institution>
          <addr-line>
            <named-content content-type="city">Curitiba</named-content>
            <named-content content-type="state">PR</named-content>
          </addr-line>
          <country>Brasil</country>
          <institution content-type="original">Cardioeco - Centro de Diagn&#243;stico
                  Cardiovascular, Curitiba, PR - Brasil</institution>
        </aff>
      </contrib-group>
      <author-notes>
        <corresp id="c02"><bold>Correspond&#234;ncia: Silvio Henrique Barberato</bold>, Rua Rezala Sim&#227;o, 1316/ Casa
               28, Santa Quit&#233;ria. CEP 80330-180, Curitiba, PR - Brasil. E-mail:
                  <email>shbarberato@hotmail.com</email>
				</corresp>
        <fn fn-type="conflict">
          <p>
            <bold>Potencial conflito de interesse</bold>
          </p>
          <p>Declaro n&#227;o haver conflito de interesses pertinentes.</p>
        </fn>
      </author-notes>
      <kwd-group xml:lang="pt">
        <kwd>Ap&#234;ndice Atrial/patologia</kwd>
        <kwd>Ecocardiografia</kwd>
      </kwd-group>
    </front-stub>
    <body>
      <p>Ap&#243;s a oclus&#227;o percut&#226;nea do ap&#234;ndice atrial esquerdo (AAE) com o dispositivo
               <italic>Amplatzer cardiac plug</italic> (ACP), &#233; frequente o achado de uma intrigante
            imagem com o formato do n&#250;mero oito ("figura do oito"). Este fen&#244;meno &#233; na verdade um
            artefato de imagem, devido &#224; intera&#231;&#227;o da malha met&#225;lica do ACP com as ondas do
               ultrassom<xref ref-type="bibr" rid="B01">1</xref>. O achado n&#227;o deve ser interpretado
            como sinal de implanta&#231;&#227;o incorreta do ACP.</p>
      <fig id="f02" fig-type="other">
        <label>Figura 1</label>
        <caption>
          <title>Paciente do sexo feminino, 72 anos, ap&#243;s oclus&#227;o percut&#226;nea do AAE com o
                  dispositivo ACP. (A) Ecocardiograma transtor&#225;cico no corte apical 5 c&#226;maras com
                  imagem em formato de oito (seta) no AE; (B) Maior inclina&#231;&#227;o anterior do
                  transdutor, visibilizando-se a &#8220;figura do oito&#8221;; (C) Ecocardiograma transtor&#225;cico
                  no corte paraesternal 3 c&#226;maras; (D) Ecocardiograma transesof&#225;gico com a &#8220;figura
                  do oito&#8221; na proje&#231;&#227;o do AAE em 5 graus (esquerda), mas n&#227;o em 95 graus (direita)
                  de rota&#231;&#227;o do &#226;ngulo</title>
        </caption>
        <graphic xlink:href="1678-4170-abc-103-02-0e29-40119-gf01-pt.jpg"/></fig>
    </body>
    <back>
      <fn-group>
        <fn fn-type="con">
          <p>
            <bold>Contribui&#231;&#227;o dos autores</bold>
          </p>
          <p>Concep&#231;&#227;o e desenho da pesquisa, Obten&#231;&#227;o de dados, An&#225;lise e interpreta&#231;&#227;o dos
                  dados, An&#225;lise estat&#237;stica, Reda&#231;&#227;o do manuscrito e Revis&#227;o cr&#237;tica do manuscrito
                  quanto ao conte&#250;do intelectual importante: Barberato SH.</p>
        </fn>
        <fn fn-type="financial-disclosure">
          <p>
            <bold>Fontes de financiamento</bold>
          </p>
          <p>O presente estudo n&#227;o teve fontes de financiamento externas.</p>
        </fn>
        <fn fn-type="other">
          <p>
            <bold>Vincula&#231;&#227;o acad&#234;mica</bold>
          </p>
          <p>N&#227;o h&#225; vincula&#231;&#227;o deste estudo a programas de p&#243;s-gradua&#231;&#227;o.</p>
        </fn>
      </fn-group>
    </back>
  </sub-article>
</article>
