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  <front>
    <journal-meta>
      <journal-id journal-id-type="nlm-ta">Arq Bras Cardiol</journal-id>
      <journal-id journal-id-type="publisher-id">abc</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 - SBC</publisher-name>
      </publisher>
    </journal-meta>
    <article-meta>
      <article-id specific-use="scielo-v3" pub-id-type="publisher-id">SDD7XK9ddXkxZcVwDKZCRrq</article-id>
      <article-id specific-use="scielo-v2" pub-id-type="publisher-id">S0066-782X2024000800701</article-id>
      <article-id pub-id-type="other">00701</article-id>
      <article-id pub-id-type="doi">10.36660/abc.20240131</article-id>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Relato de Caso</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Uso de Smartwatch na Identifica&#231;&#227;o do Bloqueio Atrioventricular no P&#243;s-Operat&#243;rio de Cirurgia Card&#237;aca: Para Al&#233;m da Detec&#231;&#227;o da Fibrila&#231;&#227;o Atrial</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0001-5553-6513</contrib-id>
          <name>
            <surname>Moitinho</surname>
            <given-names>Matheus S.</given-names>
          </name>
          <role>Concep&#231;&#227;o e desenho da pesquisa</role>
          <role>Obten&#231;&#227;o de dados</role>
          <role>An&#225;lise e interpreta&#231;&#227;o dos dados</role>
          <role>Reda&#231;&#227;o do manuscrito</role>
          <role>Revis&#227;o cr&#237;tica do manuscrito quanto ao conte&#250;do</role>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0003-3683-742X</contrib-id>
          <name>
            <surname>Moreno</surname>
            <given-names>Camila R.</given-names>
          </name>
          <role>Concep&#231;&#227;o e desenho da pesquisa</role>
          <role>Obten&#231;&#227;o de dados</role>
          <role>An&#225;lise e interpreta&#231;&#227;o dos dados</role>
          <role>Reda&#231;&#227;o do manuscrito</role>
          <role>Revis&#227;o cr&#237;tica do manuscrito quanto ao conte&#250;do</role>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0002-4042-0152</contrib-id>
          <name>
            <surname>Monteiro</surname>
            <given-names>Rosangela</given-names>
          </name>
          <role>Concep&#231;&#227;o e desenho da pesquisa</role>
          <role>An&#225;lise e interpreta&#231;&#227;o dos dados</role>
          <role>Obten&#231;&#227;o de financiamento</role>
          <role>Reda&#231;&#227;o do manuscrito</role>
          <role>Revis&#227;o cr&#237;tica do manuscrito quanto ao conte&#250;do</role>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0002-7100-7897</contrib-id>
          <name>
            <surname>Rabello</surname>
            <given-names>Guilherme C. M.</given-names>
          </name>
          <role>Concep&#231;&#227;o e desenho da pesquisa</role>
          <role>An&#225;lise e interpreta&#231;&#227;o dos dados</role>
          <role>Obten&#231;&#227;o de financiamento</role>
          <role>Reda&#231;&#227;o do manuscrito</role>
          <role>Revis&#227;o cr&#237;tica do manuscrito quanto ao conte&#250;do</role>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0009-0008-4146-6647</contrib-id>
          <name>
            <surname>Mariano</surname>
            <given-names>Bruna M.</given-names>
          </name>
          <role>Concep&#231;&#227;o e desenho da pesquisa</role>
          <role>Obten&#231;&#227;o de dados</role>
          <role>Reda&#231;&#227;o do manuscrito</role>
          <role>Revis&#227;o cr&#237;tica do manuscrito quanto ao conte&#250;do</role>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0002-6086-5933</contrib-id>
          <name>
            <surname>Martins</surname>
            <given-names>Pietro C. C. O.</given-names>
          </name>
          <role>Concep&#231;&#227;o e desenho da pesquisa</role>
          <role>An&#225;lise e interpreta&#231;&#227;o dos dados</role>
          <role>Reda&#231;&#227;o do manuscrito</role>
          <role>Revis&#227;o cr&#237;tica do manuscrito quanto ao conte&#250;do</role>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0002-9964-3289</contrib-id>
          <name>
            <surname>Tarasoutchi</surname>
            <given-names>Fl&#225;vio</given-names>
          </name>
          <role>Concep&#231;&#227;o e desenho da pesquisa</role>
          <role>Revis&#227;o cr&#237;tica do manuscrito quanto ao conte&#250;do</role>
          <xref ref-type="aff" rid="aff2">
            <sup>2</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0003-4116-6835</contrib-id>
          <name>
            <surname>Samesima</surname>
            <given-names>Nelson</given-names>
          </name>
          <role>An&#225;lise e interpreta&#231;&#227;o dos dados</role>
          <role>Revis&#227;o cr&#237;tica do manuscrito quanto ao conte&#250;do</role>
          <xref ref-type="aff" rid="aff3">
            <sup>3</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0002-3777-1947</contrib-id>
          <name>
            <surname>Soeiro</surname>
            <given-names>Alexandre de M.</given-names>
          </name>
          <role>Concep&#231;&#227;o e desenho da pesquisa</role>
          <role>Obten&#231;&#227;o de dados</role>
          <role>Revis&#227;o cr&#237;tica do manuscrito quanto ao conte&#250;do</role>
          <xref ref-type="aff" rid="aff4">
            <sup>4</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0001-6175-5595</contrib-id>
          <name>
            <surname>Jatene</surname>
            <given-names>Fabio B.</given-names>
          </name>
          <role>Concep&#231;&#227;o e desenho da pesquisa</role>
          <role>An&#225;lise e interpreta&#231;&#227;o dos dados</role>
          <role>Obten&#231;&#227;o de financiamento</role>
          <role>Revis&#227;o cr&#237;tica do manuscrito quanto ao conte&#250;do</role>
          <xref ref-type="aff" rid="aff1">
            <sup>1</sup>
          </xref>
          <xref ref-type="corresp" rid="c1"/>
        </contrib>
        <aff id="aff1">
          <label>1</label>
          <institution content-type="orgname">Instituto do Cora&#231;&#227;o do Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo</institution>
          <addr-line>
            <named-content content-type="city">S&#227;o Paulo</named-content>
            <named-content content-type="state">SP</named-content>
          </addr-line>
          <country country="BR">Brasil</country>
          <institution content-type="original">N&#250;cleo de Inova&#231;&#227;o (InovaInCor) &#8211; Instituto do Cora&#231;&#227;o do Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo, S&#227;o Paulo, SP &#8211; Brasil</institution>
        </aff>
        <aff id="aff2">
          <label>2</label>
          <institution content-type="orgname">Instituto do Cora&#231;&#227;o do Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo</institution>
          <institution content-type="orgdiv1">Unidade Cl&#237;nica de Valvulopatias</institution>
          <addr-line>
            <named-content content-type="city">S&#227;o Paulo</named-content>
            <named-content content-type="state">SP</named-content>
          </addr-line>
          <country country="BR">Brasil</country>
          <institution content-type="original">Unidade Cl&#237;nica de Valvulopatias &#8211; Instituto do Cora&#231;&#227;o do Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo, S&#227;o Paulo, SP &#8211; Brasil</institution>
        </aff>
        <aff id="aff3">
          <label>3</label>
          <institution content-type="orgname">Instituto do Cora&#231;&#227;o do Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo</institution>
          <institution content-type="orgdiv1">Unidade de Eletrocardiografia</institution>
          <addr-line>
            <named-content content-type="city">S&#227;o Paulo</named-content>
            <named-content content-type="state">SP</named-content>
          </addr-line>
          <country country="BR">Brasil</country>
          <institution content-type="original">Unidade de Eletrocardiografia &#8211; Instituto do Cora&#231;&#227;o do Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo, S&#227;o Paulo, SP &#8211; Brasil</institution>
        </aff>
        <aff id="aff4">
          <label>4</label>
          <institution content-type="orgname">Instituto do Cora&#231;&#227;o do Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo</institution>
          <institution content-type="orgdiv1">Unidade de Emerg&#234;ncia</institution>
          <addr-line>
            <named-content content-type="city">S&#227;o Paulo</named-content>
            <named-content content-type="state">SP</named-content>
          </addr-line>
          <country country="BR">Brasil</country>
          <institution content-type="original">Unidade de Emerg&#234;ncia &#8211; Instituto do Cora&#231;&#227;o do Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo, S&#227;o Paulo, SP &#8211; Brasil</institution>
        </aff>
      </contrib-group>
      <author-notes>
        <corresp id="c1"><label>Correspond&#234;ncia: F&#225;bio Biscegli Jatene</label> &#8226; Instituto do Cora&#231;&#227;o do Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo - Av. Dr. Eneas Carvalho de Aguiar, 44. CEP <postal-code>05403-900</postal-code>, Cerqueira Cesar, S&#227;o Paulo, SP - Brasil E-mail: <email>fabio.jatene@incor.usp.br</email></corresp>
        <fn fn-type="conflict">
          <label>Potencial conflito de interesse</label>
          <p>N&#227;o h&#225; conflito com o presente artigo</p>
        </fn>
        <fn fn-type="edited-by">
          <p>Editor respons&#225;vel pela revis&#227;o: Mauricio Scanavacca</p>
        </fn>
      </author-notes>
      <pub-date date-type="pub" publication-format="electronic">
        <day>09</day>
        <month>09</month>
        <year>2024</year>
      </pub-date>
      <pub-date publication-format="electronic" date-type="collection">
        <year>2024</year>
      </pub-date>
      <volume>121</volume>
      <issue>8</issue>
      <elocation-id>e20240131</elocation-id>
      <history>
        <date date-type="received">
          <day>27</day>
          <month>02</month>
          <year>2024</year>
        </date>
        <date date-type="rev-recd">
          <day>06</day>
          <month>05</month>
          <year>2024</year>
        </date>
        <date date-type="accepted">
          <day>12</day>
          <month>06</month>
          <year>2024</year>
        </date>
      </history>
      <permissions>
        <license license-type="open-access" xml:lang="en" xlink:href="https://creativecommons.org/licenses/by/4.0/">
          <license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution License</license-p>
        </license>
      </permissions>
      <kwd-group xml:lang="pt">
        <title>Palavras-chave</title>
        <kwd>Sa&#250;de</kwd>
        <kwd>Procedimentos Cir&#250;rgicos Card&#237;acos</kwd>
        <kwd>Bloqueio Atrioventricular</kwd>
      </kwd-group>
      <counts>
        <fig-count count="8"/>
        <table-count count="0"/>
        <equation-count count="0"/>
        <ref-count count="6"/>
      </counts>
    </article-meta>
  </front>
  <body>
    <sec sec-type="intro">
      <title>Introdu&#231;&#227;o</title>
      <p>Nos cuidados card&#237;acos p&#243;s-operat&#243;rios, a detec&#231;&#227;o precoce e o manejo das complica&#231;&#245;es s&#227;o fundamentais para a obten&#231;&#227;o de resultados ideais. O bloqueio atrioventricular (AV) de terceiro grau, tamb&#233;m conhecido como bloqueio atrioventricular total (BAVT), &#233; uma preocupa&#231;&#227;o significativa, que leva a sintomas como fadiga, intoler&#226;ncia ao esfor&#231;o e eventos potencialmente fatais, como s&#237;ncope ou insufici&#234;ncia card&#237;aca,<sup><xref ref-type="bibr" rid="B1">1</xref></sup> frequentemente exigindo implanta&#231;&#227;o de marca-passo card&#237;aco (MC) para uma interven&#231;&#227;o oportuna. No p&#243;s-operat&#243;rio de cirurgia card&#237;aca, problemas de condu&#231;&#227;o, decorrentes de altera&#231;&#245;es metab&#243;licas ou inflamat&#243;rias, s&#227;o comuns, frequentemente exigindo a coloca&#231;&#227;o de MC tempor&#225;rios ou permanentes para estabiliza&#231;&#227;o dos pacientes ou sintomas. Aproximadamente 6% dos pacientes de cirurgia valvar podem precisar de MC permanente devido ao BAVT, que pode surgir no p&#243;s-operat&#243;rio.<sup><xref ref-type="bibr" rid="B2">2</xref></sup></p>
      <p>A tecnologia m&#233;dica, incluindo dispositivos inteligentes e plataformas de telemonitoramento remoto, tem revolucionado a assist&#234;ncia p&#243;s-operat&#243;ria, oferecendo informa&#231;&#245;es em tempo real para um monitoramento rigoroso e dete&#231;&#227;o precoce de anomalias.<sup><xref ref-type="bibr" rid="B3">3</xref></sup></p>
      <p>Os smartwatches utilizam sensores de fotopletismograma (PPG) para monitorar os batimentos e o ritmo card&#237;aco, analisando a atividade el&#233;trica do cora&#231;&#227;o por meio de um eletrocardiograma (ECG) de deriva&#231;&#227;o &#250;nica.<sup><xref ref-type="bibr" rid="B4">4</xref></sup> Alguns dispositivos incluem Notifica&#231;&#227;o de Ritmo Card&#237;aco Irregular (IHRN) para ritmos card&#237;acos irregulares, especialmente para fibrila&#231;&#227;o atrial.<sup><xref ref-type="bibr" rid="B5">5</xref></sup></p>
      <p>Este estudo de caso destaca a sinergia entre o conhecimento m&#233;dico e a tecnologia na identifica&#231;&#227;o e tratamento de problemas de condu&#231;&#227;o card&#237;aca p&#243;s-operat&#243;ria, conforme exemplificados pela identifica&#231;&#227;o inovadora de um bloqueio AV de terceiro grau. A integra&#231;&#227;o de dispositivos inteligentes e o monitoramento remoto desempenham um papel fundamental no tratamento das complica&#231;&#245;es do BAVT. Apresentamos um caso p&#243;s troca valvar a&#243;rtica, em que um bloqueio AV de terceiro grau assintom&#225;tico foi detectado tardiamente por meio de um smartwatch, mostrando o potencial da tecnologia na melhoria dos cuidados p&#243;s-operat&#243;rios e na seguran&#231;a do paciente.</p>
      <sec>
        <title>Apresenta&#231;&#227;o do caso</title>
        <p>Paciente do sexo feminino, 52 anos de idade, participante de uma pesquisa sobre monitoramento remoto usando o Smartwatch Samsung Galaxy watch 5, apresenta hist&#243;rico m&#233;dico incluindo hipertens&#227;o arterial sist&#234;mica, tabagismo e consumo ativo de &#225;lcool. Foi submetida a interven&#231;&#227;o cir&#250;rgica aos 39 anos, optando pela substitui&#231;&#227;o da valva a&#243;rtica por insufici&#234;ncia a&#243;rtica significativa proveniente de valva a&#243;rtica nativa bic&#250;spide.</p>
        <p>Posteriormente, optou-se pela cirurgia eletiva para substitui&#231;&#227;o da valva a&#243;rtica por pr&#243;tese mec&#226;nica devido ao mau funcionamento da pr&#243;tese biol&#243;gica anterior. A substitui&#231;&#227;o mec&#226;nica da valva a&#243;rtica foi bem-sucedida, com epis&#243;dio de bloqueio AV transit&#243;rio p&#243;s-circula&#231;&#227;o extracorp&#243;rea (CEC). Foi necess&#225;rio suporte tempor&#225;rio de MC no p&#243;s-operat&#243;rio imediato, solucionando o bloqueio AV. Sua recupera&#231;&#227;o na unidade de terapia intensiva (UTI) evoluiu satisfatoriamente.</p>
        <p>Ap&#243;s a alta hospitalar, a paciente n&#227;o apresentou intercorr&#234;ncias ou complica&#231;&#245;es, com recupera&#231;&#227;o dentro do esperado.</p>
        <p>Este caso ilustra a intrincada conex&#227;o entre a recupera&#231;&#227;o p&#243;s-operat&#243;ria e tecnologias avan&#231;adas de monitoramento. Utilizando um smartwatch como canal de coleta de dados, duas semanas ap&#243;s a cirurgia, os dados do dispositivo revelaram flutua&#231;&#245;es na frequ&#234;ncia card&#237;aca (<xref ref-type="fig" rid="f1">Figura 1</xref>), exigindo a&#231;&#245;es cl&#237;nicas subsequentes. Apesar da aus&#234;ncia de queixas ou dist&#250;rbios do paciente durante as teleconsultas, um exame de ECG de deriva&#231;&#227;o &#250;nica foi solicitado, que revelou uma frequ&#234;ncia card&#237;aca de 51 batimentos por minuto. Assim, os eletrocardiogramas gerados pelo smartwatch, embora breves, mostraram claramente uma dissocia&#231;&#227;o entre as ondas P e os complexos QRS (<xref ref-type="fig" rid="f2">Figura 2a</xref>). Os alertas evolutivos, aliados ao discernimento da equipe de enfermagem sobre as peculiaridades do eletrocardiograma, levaram a suspeita diagn&#243;stica de BAVT. Medidas imediatas foram tomadas para garantir o bem-estar da paciente e a comunica&#231;&#227;o facilitou sua r&#225;pida visita ao pronto-socorro, onde exames eletrocardiogr&#225;ficos confirmaram o diagn&#243;stico (<xref ref-type="fig" rid="f2">Figura 2b</xref>).</p>
        <fig id="f1">
          <label>Figura 1</label>
          <caption>
            <title>Telemonitoramento p&#243;s-substitui&#231;&#227;o de v&#225;lvula: plataforma alertando um evento de bradicardia. Captura de imagem da plataforma de telemonitoramento utilizada no p&#243;s-operat&#243;rio para identifica&#231;&#227;o de fibrila&#231;&#227;o atrial, revelando evento de bradicardia. Nota: A plataforma original est&#225; inteiramente em portugu&#234;s brasileiro. Para fins de publica&#231;&#227;o, realizou-se uma edi&#231;&#227;o de imagens para traduzir para o ingl&#234;s e anonimizar a identidade da paciente e da equipe de sa&#250;de respons&#225;vel pelo seu atendimento.</title>
          </caption>
          <graphic xlink:href="1678-4170-abc-121-08-e20240131-40131-gf01.tif"/></fig>
        <fig id="f2">
          <label>Figura 2</label>
          <caption>
            <title>Telemonitoramento p&#243;s-substitui&#231;&#227;o de v&#225;lvula: ECG do smartwatch em compara&#231;&#227;o com o ECG padr&#227;o no pronto-socorro. A. Eletrocardiograma gerado pelo smartwatch durante o per&#237;odo de telemonitoramento do protocolo para identifica&#231;&#227;o de fibrila&#231;&#227;o atrial p&#243;s-operat&#243;ria, revelando tra&#231;o de bloqueio atrioventricular completo. B. Eletrocardiograma obtido no pronto-socorro ap&#243;s encaminhamento do paciente devido &#224; detec&#231;&#227;o de bloqueio AV no smartwatch durante o per&#237;odo de telemonitoramento.</title>
          </caption>
          <graphic xlink:href="1678-4170-abc-121-08-e20240131-40131-gf02.tif"/></fig>
        <p>A identifica&#231;&#227;o deste evento foi fundamental para a redefini&#231;&#227;o terap&#234;utica, levando a uma modifica&#231;&#227;o abrangente no plano de tratamento, com a implanta&#231;&#227;o urgente de um marca-passo card&#237;aco definitivo (<xref ref-type="fig" rid="f3">Figura 3</xref>).</p>
        <fig id="f3">
          <label>Figura 3</label>
          <caption>
            <title>Implanta&#231;&#227;o de marca-passo: p&#243;s-procedimento de ECG para BAVT. Eletrocardiograma realizado p&#243;s-implante de marca-passo definitivo por bloqueio atrioventricular total.</title>
          </caption>
          <graphic xlink:href="1678-4170-abc-121-08-e20240131-40131-gf03.tif"/></fig>
        <p>A <xref ref-type="fig" rid="f4">Figura 4</xref> mostra uma representa&#231;&#227;o esquem&#225;tica da jornada da paciente no protocolo de telemonitoramento remoto. Este relato de caso recebeu aprova&#231;&#227;o &#233;tica do Comit&#234; de &#201;tica sob os protocolos SDC 5.874.032 e CAAE 66520122.0.0000.0068.</p>
        <fig id="f4">
          <label>Figura 4</label>
          <caption>
            <title>Representa&#231;&#227;o esquem&#225;tica da jornada de telemonitoramento do paciente. 1&#8211;2) Pacientes recrutados e admiss&#227;o no protocolo. 3) Aquisi&#231;&#227;o padr&#227;o de ECG e par&#226;metros de sa&#250;de. 4) Implanta&#231;&#227;o e configura&#231;&#227;o do smartwatch e do smartphone do paciente. 5-6) Telemonitoramento remoto e assistente cl&#237;nico por 30 dias. 7) Fim do protocolo.</title>
          </caption>
          <graphic xlink:href="1678-4170-abc-121-08-e20240131-40131-gf04.tif"/></fig>
      </sec>
    </sec>
    <sec sec-type="discussion">
      <title>Discuss&#227;o</title>
      <p>O caso ressalta o impacto transformador da integra&#231;&#227;o de dispositivos inteligentes e telemonitoramento remoto aos cuidados p&#243;s-operat&#243;rios, utilizando especificamente um smartwatch para monitoramento cont&#237;nuo. Esta abordagem &#233; crucial para a detec&#231;&#227;o precoce de anomalias card&#237;acas, demonstrando o potencial de revolu&#231;&#227;o das pr&#225;ticas de sa&#250;de.</p>
      <p>O uso popular de smartwatches e tecnologias vest&#237;veis em contextos cotidianos &#233; um fen&#244;meno atual. A rela&#231;&#227;o simbi&#243;tica entre essas tecnologias e a sa&#250;de tem se tornado cada vez mais comum e significativa. Embora ainda em fase inicial para a pr&#225;tica cl&#237;nica, a potencial aplica&#231;&#227;o destas tecnologias como ferramentas de apoio &#224;s decis&#245;es m&#233;dicas tem sido fundamentada por evid&#234;ncias cient&#237;ficas atuais.<sup><xref ref-type="bibr" rid="B6">6</xref></sup> Elas podem melhorar os cuidados ao paciente, permitindo a medi&#231;&#227;o f&#225;cil e port&#225;til de diversos par&#226;metros de sa&#250;de.</p>
      <p>A utiliza&#231;&#227;o de smartwatches em conjunto com plataformas de telemonitoramento digital remoto representa uma realidade promissora na medicina moderna, permitindo o monitoramento cont&#237;nuo e em tempo real de par&#226;metros essenciais de sa&#250;de, ultrapassando diversas barreiras, principalmente aquelas relacionadas com a inacessibilidade ou monitoramento cont&#237;nuo.</p>
      <p>Um ponto forte essencial deste sistema integrado reside no monitoramento meticuloso de par&#226;metros vitais, como frequ&#234;ncia card&#237;aca, press&#227;o arterial, satura&#231;&#227;o de oxig&#234;nio e ECG. Esse monitoramento abrangente oferece informa&#231;&#245;es em tempo real sobre a din&#226;mica fisiol&#243;gica dos pacientes, permitindo que os profissionais de sa&#250;de identifiquem rapidamente quaisquer desvios da normalidade com praticidade e confiabilidade. A natureza proativa da tecnologia permite interven&#231;&#245;es cl&#237;nicas imediatas, alterando significativamente a din&#226;mica da assist&#234;ncia p&#243;s-operat&#243;ria.</p>
      <p>O caso apresentado destaca t&#233;cnicas avan&#231;adas de monitoramento, que agilizam a tomada de decis&#245;es cl&#237;nicas, conforme demonstrado pela pronta resposta &#224;s anomalias card&#237;acas identificadas. Isto melhora a capacidade dos prestadores de cuidados de sa&#250;de em intervir rapidamente, aumentando a efic&#225;cia do tratamento, minimizando potenciais complica&#231;&#245;es e, em &#250;ltima an&#225;lise, otimizando os resultados dos pacientes.</p>
      <p>Um aspecto not&#225;vel &#233; a transi&#231;&#227;o das avalia&#231;&#245;es intermitentes para a vigil&#226;ncia cont&#237;nua, superando o modelo convencional de acompanhamento dos pacientes. A vigil&#226;ncia proativa por meio de dispositivos inteligentes e monitoramento remoto permite a dete&#231;&#227;o precoce de altera&#231;&#245;es sutis, aliada &#224; experi&#234;ncia cl&#237;nica, e facilitando interven&#231;&#245;es precisas para uma jornada de recupera&#231;&#227;o mais segura e eficiente.</p>
    </sec>
    <sec sec-type="conclusions">
      <title>Conclus&#227;o</title>
      <p>Este caso ilustra a evolu&#231;&#227;o do cen&#225;rio dos cuidados p&#243;s-operat&#243;rios, enfatizando a sinergia entre dispositivos inteligentes e o telemonitoramento remoto. Isso aumenta a precis&#227;o do diagn&#243;stico, agiliza a tomada de decis&#245;es e transforma a abordagem de acompanhamento do paciente. A ado&#231;&#227;o desses avan&#231;os tecnol&#243;gicos capacita os profissionais de sa&#250;de para navegar pelas complexidades p&#243;s-operat&#243;rias, garantindo uma abordagem proativa e personalizada, que otimiza os resultados de sa&#250;de dos pacientes.</p>
    </sec>
  </body>
  <back>
    <fn-group>
      <fn fn-type="supported-by" id="fn4">
        <label>Fontes de financiamento</label>
        <p>O presente estudo foi financiado pela Samsung Eletr&#244;nica da Amaz&#244;nia Ltda.</p>
      </fn>
      <fn fn-type="other" id="fn5">
        <label>Vincula&#231;&#227;o acad&#234;mica</label>
        <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 fn-type="other" id="fn6">
        <label>Aprova&#231;&#227;o &#233;tica e consentimento informado</label>
        <p>Este estudo foi aprovado pelo Comit&#234; de &#201;tica do Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo sob o n&#250;mero de protocolo 5.874.032 (SDC) / 66520122.0.0000.0068 (CAAE). Todos os procedimentos envolvidos nesse estudo est&#227;o de acordo com a Declara&#231;&#227;o de Helsinki de 1975, atualizada em 2013. O consentimento informado foi obtido de todos os participantes inclu&#237;dos no estudo.</p>
      </fn>
    </fn-group>
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  <sub-article article-type="translation" id="S1" xml:lang="en">
    <front-stub>
      <article-id pub-id-type="doi">10.36660/abc.20240131i</article-id>
      <article-categories>
        <subj-group subj-group-type="heading">
          <subject>Case Report</subject>
        </subj-group>
      </article-categories>
      <title-group>
        <article-title>Smartwatch for Identification of Atrioventricular Block in Post-cardiac Surgery: Going Beyond Atrial Fibrillation Detection</article-title>
      </title-group>
      <contrib-group>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0001-5553-6513</contrib-id>
          <name>
            <surname>Moitinho</surname>
            <given-names>Matheus S.</given-names>
          </name>
          <role>Conception and design of the research</role>
          <role>Acquisition of data</role>
          <role>Analysis and interpretation of the data</role>
          <role>Writing of the manuscript</role>
          <role>Critical revision of the manuscript for content</role>
          <xref ref-type="aff" rid="aff5">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0003-3683-742X</contrib-id>
          <name>
            <surname>Moreno</surname>
            <given-names>Camila R.</given-names>
          </name>
          <role>Conception and design of the research</role>
          <role>Acquisition of data</role>
          <role>Analysis and interpretation of the data</role>
          <role>Writing of the manuscript</role>
          <role>Critical revision of the manuscript for content</role>
          <xref ref-type="aff" rid="aff5">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0002-4042-0152</contrib-id>
          <name>
            <surname>Monteiro</surname>
            <given-names>Rosangela</given-names>
          </name>
          <role>Conception and design of the research</role>
          <role>Analysis and interpretation of the data</role>
          <role>Obtaining financing</role>
          <role>Writing of the manuscript</role>
          <role>Critical revision of the manuscript for content</role>
          <xref ref-type="aff" rid="aff5">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0002-7100-7897</contrib-id>
          <name>
            <surname>Rabello</surname>
            <given-names>Guilherme C. M.</given-names>
          </name>
          <role>Conception and design of the research</role>
          <role>Analysis and interpretation of the data</role>
          <role>Obtaining financing</role>
          <role>Writing of the manuscript</role>
          <role>Critical revision of the manuscript for content</role>
          <xref ref-type="aff" rid="aff5">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0009-0008-4146-6647</contrib-id>
          <name>
            <surname>Mariano</surname>
            <given-names>Bruna M.</given-names>
          </name>
          <role>Conception and design of the research</role>
          <role>Acquisition of data</role>
          <role>Writing of the manuscript</role>
          <role>Critical revision of the manuscript for content</role>
          <xref ref-type="aff" rid="aff5">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0002-6086-5933</contrib-id>
          <name>
            <surname>Martins</surname>
            <given-names>Pietro C. C. O.</given-names>
          </name>
          <role>Conception and design of the research</role>
          <role>Analysis and interpretation of the data</role>
          <role>Writing of the manuscript</role>
          <role>Critical revision of the manuscript for content</role>
          <xref ref-type="aff" rid="aff5">
            <sup>1</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0002-9964-3289</contrib-id>
          <name>
            <surname>Tarasoutchi</surname>
            <given-names>Fl&#225;vio</given-names>
          </name>
          <role>Conception and design of the research</role>
          <role>Critical revision of the manuscript for content</role>
          <xref ref-type="aff" rid="aff6">
            <sup>2</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0003-4116-6835</contrib-id>
          <name>
            <surname>Samesima</surname>
            <given-names>Nelson</given-names>
          </name>
          <role>Analysis and interpretation of the data</role>
          <role>Critical revision of the manuscript for content</role>
          <xref ref-type="aff" rid="aff7">
            <sup>3</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0002-3777-1947</contrib-id>
          <name>
            <surname>Soeiro</surname>
            <given-names>Alexandre de M.</given-names>
          </name>
          <role>Acquisition of data</role>
          <role>Critical revision of the manuscript for content</role>
          <xref ref-type="aff" rid="aff8">
            <sup>4</sup>
          </xref>
        </contrib>
        <contrib contrib-type="author">
          <contrib-id contrib-id-type="orcid">0000-0001-6175-5595</contrib-id>
          <name>
            <surname>Jatene</surname>
            <given-names>Fabio B.</given-names>
          </name>
          <role>Conception and design of the research</role>
          <role>Analysis and interpretation of the data</role>
          <role>Obtaining financing</role>
          <role>Critical revision of the manuscript for content</role>
          <xref ref-type="aff" rid="aff5">
            <sup>1</sup>
          </xref>
          <xref ref-type="corresp" rid="c2"/>
        </contrib>
        <aff id="aff5">
          <label>1</label>
          <addr-line>
            <named-content content-type="city">S&#227;o Paulo</named-content>
            <named-content content-type="state">SP</named-content>
          </addr-line>
          <country country="BR">Brazil</country>
          <institution content-type="original">N&#250;cleo de Inova&#231;&#227;o (InovaInCor) &#8211; Instituto do Cora&#231;&#227;o do Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo, S&#227;o Paulo, SP &#8211; Brazil</institution>
        </aff>
        <aff id="aff6">
          <label>2</label>
          <addr-line>
            <named-content content-type="city">S&#227;o Paulo</named-content>
            <named-content content-type="state">SP</named-content>
          </addr-line>
          <country country="BR">Brazil</country>
          <institution content-type="original">Unidade Cl&#237;nica de Valvulopatias &#8211; Instituto do Cora&#231;&#227;o do Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo, S&#227;o Paulo, SP &#8211; Brazil</institution>
        </aff>
        <aff id="aff7">
          <label>3</label>
          <addr-line>
            <named-content content-type="city">S&#227;o Paulo</named-content>
            <named-content content-type="state">SP</named-content>
          </addr-line>
          <country country="BR">Brazil</country>
          <institution content-type="original">Unidade de Eletrocardiografia &#8211; Instituto do Cora&#231;&#227;o do Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo, S&#227;o Paulo, SP &#8211; Brazil</institution>
        </aff>
        <aff id="aff8">
          <label>4</label>
          <addr-line>
            <named-content content-type="city">S&#227;o Paulo</named-content>
            <named-content content-type="state">SP</named-content>
          </addr-line>
          <country country="BR">Brazil</country>
          <institution content-type="original">Unidade de Emerg&#234;ncia &#8211; Instituto do Cora&#231;&#227;o do Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo, S&#227;o Paulo, SP &#8211; Brazil</institution>
        </aff>
      </contrib-group>
      <author-notes>
        <corresp id="c2"><label>Mailing Address: F&#225;bio Biscegli Jatene</label> &#8226; Instituto do Cora&#231;&#227;o do Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo - Av. Dr. Eneas Carvalho de Aguiar, 44. Postal Code <postal-code>05403-900</postal-code>, Cerqueira Cesar, S&#227;o Paulo, SP - Brazil E-mail: <email>fabio.jatene@incor.usp.br</email></corresp>
        <fn fn-type="conflict">
          <label>Potential conflict of interest</label>
          <p>No potential conflict of interest relevant to this article was reported.</p>
        </fn>
        <fn fn-type="edited-by">
          <p>Editor responsible for the review: Mauricio Scanavacca</p>
        </fn>
      </author-notes>
      <kwd-group xml:lang="en">
        <title>Keywords</title>
        <kwd>Health</kwd>
        <kwd>Cardiac Surgical Procedures</kwd>
        <kwd>Atrioventricular Block</kwd>
      </kwd-group>
    </front-stub>
    <body>
      <sec sec-type="intro">
        <title>Introduction</title>
        <p>In postoperative cardiac care, early detection and management of complications are crucial for optimal outcomes. Third-degree atrioventricular (AV) block, also known as complete heart block (CHB), is a significant concern, leading to symptoms like fatigue, exertion intolerance, and life-threatening events such as syncope or heart failure,<sup><xref ref-type="bibr" rid="B1">1</xref></sup> often necessitating cardiac pacemaker (CP) implantation for timely intervention. In the postoperative period of cardiac surgery, conduction issues stemming from metabolic or inflammatory changes are common, necessitating temporary or permanent CPs to stabilize patients or symptoms. Approximately 6% of valve surgery patients may require a permanent CP due to CHB, which can emerge post-surgery.<sup><xref ref-type="bibr" rid="B2">2</xref></sup></p>
        <p>Medical technology, including smart devices and remote telemonitoring platforms, has revolutionized postoperative care, offering real-time insights for close monitoring and early anomaly detection.<sup><xref ref-type="bibr" rid="B3">3</xref></sup></p>
        <p>Smartwatches utilize photoplethysmography (PPG) sensors to monitor heartbeat and rhythm, analyzing the heart's electrical activity through a single-lead electrocardiogram (ECG).<sup><xref ref-type="bibr" rid="B4">4</xref></sup> Some devices include Irregular Heart Rhythm Notification (IHRN) for irregular heart rhythms, particularly for atrial fibrillation.<sup><xref ref-type="bibr" rid="B5">5</xref></sup></p>
        <p>This case study highlights the synergy between medical knowledge and technology in identifying and managing postoperative cardiac conduction problems, exemplified by the innovative identification of a third-degree AV block. Integration of smart devices and remote monitoring plays a pivotal role in addressing CHB complications. We present a case after aortic valve replacement, where an asymptomatic third-degree AV block was late detected through a smartwatch, show technology's potential in enhancing postoperative care and patient safety.</p>
        <sec>
          <title>Case presentation</title>
          <p>A 52-year-old female patient, part of a research study on remote monitoring using the Samsung Galaxy 5 Smartwatch, has a medical history that includes systemic hypertension, smoking, and active alcohol consumption. She underwent surgical intervention at 39 years old, opting for aortic valve replacement due to significant aortic insufficiency from a bicuspid native aortic valve.</p>
          <p>Later, due to the malfunction of the previous biological prosthesis, the patient chose elective surgery to replace her aortic valve with a mechanical prosthesis. The mechanical aortic valve replacement was successful, with a transient AV block episode post-cardiopulmonary bypass (CPB). Temporary pacemaker support was necessary during the immediate postoperative period to resolve the AV block. Her recovery in the intensive care unit (ICU) progressed satisfactorily.</p>
          <p>Post-hospital discharge, the patient exhibited no events or complications, with recovery within the expected range.</p>
          <p>This case illustrates the intricate connection between postoperative recovery and advanced monitoring technologies. Utilizing a smartwatch as the data collection conduit, two weeks post-surgery, device data revealed heart rate fluctuations (<xref ref-type="fig" rid="f5">Figure 1</xref>), prompting subsequent clinical actions. Despite the absence of patient complaints or disturbances during teleconsultations, a single-lead ECG test was ordered, uncovering a heart rate of 51 beats per minute. Crucially, the smartwatch-generated electrocardiograms, though brief, clearly showed a dissociation between the P waves and QRS complexes (<xref ref-type="fig" rid="f6">Figure 2a</xref>). The evolving alerts, combined with the nursing team's discernment of electrocardiogram peculiarities, led to the presumed diagnosis of CHB. Prompt measures were taken to ensure the patient's well-being, and communication facilitated her swift visit to the emergency department, where electrocardiographic examinations confirmed the diagnosis (<xref ref-type="fig" rid="f6">Figure 2b</xref>).</p>
          <fig id="f5">
            <label>Figure 1</label>
            <caption>
              <title>Telemonitoring Post-Valve Replacement: Platform Alerting a Bradycardia Event. Image capture from the telemonitoring platform used during the postoperative period to identify atrial fibrillation, revealing a bradycardia event. Note: The original platform is entirely in Brazilian Portuguese. The image was edited for publication to translate it into English and to anonymize the identities of the patient and the healthcare team responsible for her care.</title>
            </caption>
            <graphic xlink:href="1678-4170-abc-121-08-e20240131-40131-gf01-en.tif"/></fig>
          <fig id="f6">
            <label>Figure 2</label>
            <caption>
              <title>Telemonitoring Post-Valve Replacement: Smartwatch ECG vs. ECG Standard in the Emergency Department. A. Electrocardiogram generated by the smartwatch during the telemonitoring period of the protocol for the identification of postoperative atrial fibrillation, revealing a trace of complete atrioventricular block. B. Electrocardiogram obtained in the emergency department after the patient was referred following the detection of an AV block on the smartwatch during the telemonitored period.</title>
            </caption>
            <graphic xlink:href="1678-4170-abc-121-08-e20240131-40131-gf02-en.tif"/></fig>
          <p>The identification of this event was pivotal for therapeutic redefinition, leading to a comprehensive modification in the treatment plan, necessitating the urgent implantation of a definitive cardiac pacemaker (<xref ref-type="fig" rid="f7">Figure 3</xref>).</p>
          <fig id="f7">
            <label>Figure 3</label>
            <caption>
              <title>Pacemaker Implantation: ECG Post-Procedure for CHB. Electrocardiogram conducted post-implantation of a permanent pacemaker due to a complete atrioventricular block.</title>
            </caption>
            <graphic xlink:href="1678-4170-abc-121-08-e20240131-40131-gf03-en.tif"/></fig>
          <p><xref ref-type="fig" rid="f8">Figure 4</xref> provides a schematic representation of the patient's journey in the remote telemonitoring protocol. This case report received ethical approval from the Ethics Committee under protocol numbers SDC 5.874.032 and CAAE 66520122.0.0000.0068.</p>
          <fig id="f8">
            <label>Figure 4</label>
            <caption>
              <title>Figure of the patient's telemonitoring journey. 1&#8211;2) Patients recruited and admitted to the protocol. 3) Standard ECG and health parameters acquisition. 4) Patient's smartwatch and smartphone deployment and setup. 5-6) Remote telemonitoring and clinical assistance for 30 days. 7) Protocol's end.</title>
            </caption>
            <graphic xlink:href="1678-4170-abc-121-08-e20240131-40131-gf04-en.tif"/></fig>
        </sec>
      </sec>
      <sec sec-type="discussion">
        <title>Discussion</title>
        <p>The case underscores the transformative impact of integrating smart devices and remote telemonitoring into postoperative care, specifically utilizing a smartwatch for continuous monitoring. This approach is crucial for the early detection of cardiac anomalies, demonstrating the potential to revolutionize healthcare practices.</p>
        <p>The popular use of smartwatches and wearable technologies in everyday contexts is a current phenomenon. The symbiotic relationship between these technologies and health has become increasingly common and significant. Although still in its early stages for clinical practice, the potential application of these technologies as tools to support clinical decisions is being substantiated by current scientific evidence.<sup><xref ref-type="bibr" rid="B6">6</xref></sup> They can enhance care by enabling easy and portable measurement of various health parameters.</p>
        <p>The use of smartwatches in conjunction with remote digital telemonitoring platforms represents a promising reality in modern medicine, allowing continuous and real-time monitoring of essential health parameters, overcoming various barriers, particularly those related to inaccessibility or continuous monitoring.</p>
        <p>An essential strength of this integrated system lies in its meticulous tracking of vital parameters such as heart rate, blood pressure, oxygen saturation, and ECG. This comprehensive monitoring provides real-time insights into patients&#8217; physiological dynamics, enabling healthcare professionals to swiftly identify deviations from the norm with practicality and reliability. The proactive nature allows for prompt clinical interventions, significantly changing postoperative care dynamics.</p>
        <p>The case highlights advanced monitoring techniques expediting clinical decision-making, demonstrated by the prompt response to identified cardiac anomalies. This improves healthcare providers&#8217; capacity to intervene swiftly, enhancing treatment effectiveness and minimizing potential complications, ultimately optimizing patient outcomes.</p>
        <p>A notable aspect is the transition from intermittent assessments to continuous surveillance, surpassing the conventional patient follow-up model. Proactive vigilance through smart devices and remote monitoring enables early detection of subtle changes, coupled with clinical expertise, facilitating precise interventions for a safer and more efficient recovery journey.</p>
      </sec>
      <sec sec-type="conclusions">
        <title>Conclusion</title>
        <p>In conclusion, the case illustrates the evolving postoperative care landscape, emphasizing the synergy between smart devices and remote telemonitoring. This enhances diagnostic accuracy, expedites decision-making, and transforms the patient follow-up approach. Embracing these advancements equips healthcare providers to navigate postoperative complexities, ensuring a proactive, personalized approach that optimizes patient outcomes in modern healthcare.</p>
      </sec>
    </body>
    <back>
      <fn-group>
        <fn fn-type="supported-by" id="fn1">
          <label>Sources of funding</label>
          <p>This study was partially funded by Samsung Eletr&#244;nica da Amaz&#244;nia Ltda.</p>
        </fn>
        <fn fn-type="other" id="fn2">
          <label>Study association</label>
          <p>This study is not associated with any thesis or dissertation work.</p>
        </fn>
        <fn fn-type="other" id="fn3">
          <label>Ethics approval and consent to participate</label>
          <p>This study was approved by the Ethics Committee of the Hospital das Cl&#237;nicas da Faculdade de Medicina da Universidade de S&#227;o Paulo under the protocol number 5.874.032 (SDC) / 66520122.0.0000.0068 (CAAE). All the procedures in this study were in accordance with the 1975 Helsinki Declaration, updated in 2013. Informed consent was obtained from all participants included in the study.</p>
        </fn>
      </fn-group>
    </back>
  </sub-article>
</article>
