<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>2341-4545</journal-id>
<journal-title><![CDATA[GE-Portuguese Journal of Gastroenterology]]></journal-title>
<abbrev-journal-title><![CDATA[GE Port J Gastroenterol]]></abbrev-journal-title>
<issn>2341-4545</issn>
<publisher>
<publisher-name><![CDATA[Sociedade Portuguesa de Gastrenterologia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2341-45452022000300047</article-id>
<article-id pub-id-type="doi">10.1159/000515655</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Percutaneous Tibial Nerve Stimulation in Chronic Post-Surgical Anorectal Pain: A Case Report]]></article-title>
<article-title xml:lang="pt"><![CDATA[Estimulação Percutânea do Nervo Tibial na Dor Anal Crónica Pós-Cirúrgica - Caso Clínico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pacheco]]></surname>
<given-names><![CDATA[Marta]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Xavier]]></surname>
<given-names><![CDATA[João]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Santos]]></surname>
<given-names><![CDATA[Olga]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Raposo]]></surname>
<given-names><![CDATA[Carina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Regalado]]></surname>
<given-names><![CDATA[Ana Margarida]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Hospitalar Universitário do Porto Serviço de Anestesiologia ]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro Hospitalar Universitário de São João Serviço de Anestesiologia ]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro Hospitalar Universitário do Porto Unidade Funcional de Dor Crónica ]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
<country>Portugal</country>
</aff>
<pub-date pub-type="pub">
<day>30</day>
<month>06</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>30</day>
<month>06</month>
<year>2022</year>
</pub-date>
<volume>29</volume>
<numero>3</numero>
<fpage>47</fpage>
<lpage>52</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S2341-45452022000300047&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S2341-45452022000300047&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S2341-45452022000300047&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction:  Anorectal pain is a symptom with a negative impact on quality of life and it can sometimes develop into a chronic pain syndrome. Structural anorectal pain is treated according to the underlying pathology. In situations of chronic post-surgical pain that is refractory to conventional therapeutic approaches, percutaneous tibial nerve stimulation (PTNS) is an option. PTNS is a neurostimulation technique used in the treatment of lower urinary tract dysfunction. There has been increasing evidence of its benefits for improving other conditions, such as chronic pelvic pain (CPP) and faecal incontinence (FI).  Case Presentation:  We report a case of a 45-year-old woman with chronic post-surgical anorectal pain (CPAP) treated with PTNS. The patient reported a consistent and dramatic decrease in both the frequency and intensity of pain, assessed by the Brief Pain Inventory (BPI). A decrease in the pain interference with mood, normal work, and walking/mobility was also noted, as evaluated by BPI and EQ-5D-3L questionnaires.  Discussion:  Neuromodulation treatments have been reported as effective for anorectal pain, but reports on the use of PTNS are rare. The tibial nerve is easily accessible and provides an optimal site for neurostimulation without the need of an operating room or anaesthesia. The overall improvement observed in this case of chronic anorectal pain suggests a potential new area of research for PTNS.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo  Introdução:  A dor anorectal é um sintoma com um impacto negativo na qualidade de vida, podendo, por vezes, desenvolver-se numa síndrome de dor crónica. A dor anorectal de etiologia estrutural trata-se de acordo com a patologia subjacente. No entanto, em situações de dor crónica pós-cirúrgica refratária a abordagens terapêuticas convencionais, a estimulação percutânea do nervo tibial (percutaneous tibial nerve stimulation - PTNS) é uma opção de tratamento. A PTNS é uma técnica de neuroestimulação, estando descritos benefícios da sua aplicação no tratamento da urgência, frequência, incontinência e retenção urinária. Evidência crescente mostra, ainda, resultados promissores noutras condições, como a dor crónica pélvica e a incontinência fecal.  Caso Clínico:  Descrevemos um caso de uma mulher de 45 anos, com dor crónica anorectal pós-cirúrgica tratada com PTNS. Ao longo do período de seguimento, a doente reportou uma diminuição consistente e significativa na frequência e na intensidade da dor, tal como avaliado pelo Brief Pain Inventory (BPI). Adicionalmente, foi notória uma melhoria significativa de parâmetros relacionados com a qualidade de vida, avaliados pelos questionários BPI e EQ-5D-3L.  Discussão:  A evidência atual mostra que técnicas baseadas em neuromodulação têm sido eficazes no tratamento da dor anorectal, apesar dos estudos com PTNS ainda serem escassos. O nervo tibial é uma estrutura facilmente acessível e constitui um local óptimo para aplicação de neuroestimulação. A PTNS é uma opção terapêutica pouco invasiva, que não necessita de idas ao bloco operatório, nem de apoio de anestesia. O benefício observado do uso da PTNS neste caso sugere uma nova área de estudo e de potencial aplicabilidade para a técnica.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Anorectal chronic pain]]></kwd>
<kwd lng="en"><![CDATA[Post-surgical pain]]></kwd>
<kwd lng="en"><![CDATA[Neuromodulation]]></kwd>
<kwd lng="pt"><![CDATA[Dor crónica anorectal]]></kwd>
<kwd lng="pt"><![CDATA[Dor pós-cirúrgica]]></kwd>
<kwd lng="pt"><![CDATA[Neuromodulação]]></kwd>
</kwd-group>
</article-meta>
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