<?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>1646-5830</journal-id>
<journal-title><![CDATA[Acta Obstétrica e Ginecológica Portuguesa]]></journal-title>
<abbrev-journal-title><![CDATA[Acta Obstet Ginecol Port]]></abbrev-journal-title>
<issn>1646-5830</issn>
<publisher>
<publisher-name><![CDATA[Euromédice, Edições Médicas Lda.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1646-58302022000200163</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Use of Etonogestrel implant beyond approved duration - A case report]]></article-title>
<article-title xml:lang="pt"><![CDATA[Uso do Implante de Etonogestrel além da duração aprovada - Um caso clínico]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carvalho]]></surname>
<given-names><![CDATA[Carolina Castro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reis]]></surname>
<given-names><![CDATA[Inês Silveira]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Machado]]></surname>
<given-names><![CDATA[Ana Isabel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Maternidade Doutor Alfredo da Costa  ]]></institution>
<addr-line><![CDATA[Lisboa ]]></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>16</volume>
<numero>2</numero>
<fpage>163</fpage>
<lpage>165</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S1646-58302022000200163&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S1646-58302022000200163&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S1646-58302022000200163&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The contraceptive implant is the most effective method of reversible contraception. Observational and trial data indicate that this method remains effective beyond the initially approved duration of use. We report a case of etonogestrel serum levels above the supposed threshold value for ovulation suppression nine years after implant insertion.]]></p></abstract>
<abstract abstract-type="short" xml:lang="pt"><p><![CDATA[Resumo O implante contracetivo é o método de contraceção reversível mais eficaz. A evidência obtida através de relatos de casos e estudos prospectivos indica que este método permanece eficaz por mais tempo do que o inicialmente aprovado para uso. Reportamos um caso clínico em que se objetivou um valor sérico de etonogestrel superior ao valor considerado supressor da ovulação nove anos após colocação do implante.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Etonogestrel implant]]></kwd>
<kwd lng="en"><![CDATA[Contraceptive effectiveness]]></kwd>
<kwd lng="en"><![CDATA[Nexplanon®]]></kwd>
<kwd lng="en"><![CDATA[Implanon NXT®]]></kwd>
<kwd lng="en"><![CDATA[Family planning]]></kwd>
<kwd lng="pt"><![CDATA[Implante de etonogestrel]]></kwd>
<kwd lng="pt"><![CDATA[Eficácia contracetiva]]></kwd>
<kwd lng="pt"><![CDATA[Nexplanon®]]></kwd>
<kwd lng="pt"><![CDATA[Implanon NXT®]]></kwd>
<kwd lng="pt"><![CDATA[Planeamento Familiar]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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