<?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>S1646-58302017000100007</article-id>
<title-group>
<article-title xml:lang="pt"><![CDATA[Tipos e vias de abordagem cirúrgica em histerectomia e sua relação com lesão do sistema urinário]]></article-title>
<article-title xml:lang="en"><![CDATA[Type and surgical approach in hysterectomy and lesions to the urinary tract]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[Joana Raquel]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Costa]]></surname>
<given-names><![CDATA[Antónia]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidade do Porto Faculdade de Medicina ]]></institution>
<addr-line><![CDATA[Porto ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>03</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>03</month>
<year>2017</year>
</pub-date>
<volume>11</volume>
<numero>1</numero>
<fpage>46</fpage>
<lpage>56</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_arttext&amp;pid=S1646-58302017000100007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_abstract&amp;pid=S1646-58302017000100007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.pt/scielo.php?script=sci_pdf&amp;pid=S1646-58302017000100007&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Hysterectomy is the second most frequently performed gynecological surgery. It is therefore relevant to perform an assessment of factors associated with urological surgical morbidity. Hysterectomy is associated with injuries to the ureter (0-3.97%) and bladder (0-2.8%). The incidence of urologic complications has been declining, as well as the difference between surgical approaches. There are some studies that demonstrate an increased risk of urologic injuries with laparoscopic and radical hysterectomy. Controversy remains on which are the real benefits of subtotal hysterectomy. No differences were found between intrafascial and extrafascial techniques. Concomitant salpingophorectomy doesn't lead to a greater risk of injuries.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Hysterectomy]]></kwd>
<kwd lng="en"><![CDATA[Urinary tract injury]]></kwd>
<kwd lng="en"><![CDATA[Urologic morbidity]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="right"><font size="2"><b>ARTIGO DE REVIS&#195;O/</b>REVIEW ARTICLE</font></p>     <p><font size="4"><b>Tipos e vias de abordagem cir&#250;rgica em histerectomia e sua rela&#231;&#227;o com les&#227;o do sistema urin&#225;rio</b></font></p>     <p><font size="3"><b>Type and surgical approach in hysterectomy and lesions to the urinary tract</b></font></p>     <p><b>Joana Raquel Costa*, Ant&#243;nia Costa*<sup>,</sup>**</b></p>     <p>Faculdade de Medicina do Porto </p>     <p>Departamento de Ginecologia e Obstetricia</p>     <p>*Estudante de Mestrado Integrado em Medicina da Faculdade de Medicina, Universidade do Porto, Porto</p>     <p>**Assistente Hospitalar do Servi&#231;o de Ginecologia e Obstetr&#237;cia, Centro Hospitalar de S&#227;o Jo&#227;o, E.P.E. Porto; Professora Auxiliar Convidada do Departamento de Ginecologia, Obstetr&#237;cia e Pediatria da FMUP; i3S Instituto de Inova&#231;&#227;o e Investiga&#231;&#227;o em Sa&#250;de, Universidade do Porto</p>     <p><a href="#c0">Endere&ccedil;o para correspond&ecirc;ncia</a> | <a href="#c0">Direcci&oacute;n para correspondencia</a> | <a href="#c0">Correspondence</a><a name="topc0"></a></p> <hr/>     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p><b>ABSTRACT</b></p>     <p>Hysterectomy is the second most frequently performed gynecological surgery. It is therefore relevant to perform an assessment of factors associated with urological surgical morbidity.</p>     <p>Hysterectomy is associated with injuries to the ureter (0-3.97%) and bladder (0-2.8%). The incidence of urologic complications has been declining, as well as the difference between surgical approaches. There are some studies that demonstrate an increased risk of urologic injuries with laparoscopic and radical hysterectomy. Controversy remains on which are the real benefits of subtotal hysterectomy. No differences were found between intrafascial and extrafascial techniques. Concomitant salpingophorectomy doesn&#8217;t lead to a greater risk of injuries. </p>     <p><b>Keywords: </b>Hysterectomy; Urinary tract injury; Urologic morbidity.</p> <hr/>     <p>&nbsp;</p>     <p><b>Introdu&#231;&#227;o</b></p>     <p>A histerectomia &#233;, logo a seguir &#224; cesariana, a segunda cirurgia ginecol&#243;gica mais frequentemente realizada nos pa&#237;ses desenvolvidos em mulheres em idade reprodutiva<sup>1</sup>. Em pa&#237;ses como Israel, Espanha, Portugal, Rep&#250;blica Checa e Dinamarca a taxa &#233; de menos de 200 por 100.000 mulheres por ano<sup>2</sup>. </p>     <p>Existem v&#225;rios tipos de histerectomia, bem como diferentes vias de abordagem cir&#250;rgica. A escolha do tipo e da via de histerectomia mais apropriado vai depender fundamentalmente de: indica&#231;&#227;o cir&#250;rgica, comorbilidades da doente, cirurgias pr&#233;vias abdominop&#233;lvicas, prefer&#234;ncia da paciente, experi&#234;ncia do cirurgi&#227;o e disponibilidade t&#233;cnica institucional. Todas estas condicionantes s&#227;o fatores com impacto na morbimortalidade cir&#250;rgica desta interven&#231;&#227;o. </p>     <p>As tr&#234;s principais vias de abordagem cir&#250;rgica para a realiza&#231;&#227;o de uma histerectomia s&#227;o: (1) via abdominal por laparotomia, (2) via vaginal e (3) via abdominal laparosc&#243;pica. De acordo com a extens&#227;o de disse&#231;&#227;o por via laparosc&#243;pica, esta pode ser ainda subclassificada em histerectomia vaginal assistida por laparoscopia e histerectomia laparosc&#243;pica supracervical<sup>3</sup>. </p>     <p>Existem v&#225;rios tipos de histerectomia e todos eles envolvendo a remo&#231;&#227;o do corpo uterino. Numa histerectomia subtotal, tamb&#233;m designada de supracervical ou parcial, n&#227;o ocorre ex&#233;rese do colo uterino. Uma histerectomia total envolve a remo&#231;&#227;o de corpo e colo<sup>4</sup>. </p>     ]]></body>
<body><![CDATA[<p>A histerectomia total intrafascial implica uma disse&#231;&#227;o dos espa&#231;os vesicouterino e retouterino com preserva&#231;&#227;o da f&#225;scia pubovesicocervical. Esta f&#225;scia cont&#233;m vasos e nervos respons&#225;veis pela irriga&#231;&#227;o e inerva&#231;&#227;o da base da bexiga, do colo do &#250;tero e por&#231;&#227;o superior da vagina. A histerectomia total extrafascial n&#227;o preserva a f&#225;scia pubovesicocervical<sup>5</sup>.</p>     <p>Denomina-se histerectomia radical, quando se procede &#224; ex&#233;rese do corpo e colo uterinos juntamente com param&#233;trios e por&#231;&#227;o superior da vagina<sup>4</sup>.<b> </b>Existem v&#225;rias classifica&#231;&#245;es de histerectomia radical, mas todas dependem da extens&#227;o da resse&#231;&#227;o cir&#250;rgica relativamente aos param&#233;trios.</p>     <p>A histerectomia tamb&#233;m pode envolver a remo&#231;&#227;o bilateral das trompas de Fal&#243;pio (salpingectomia) e ov&#225;rios (ooforectomia), designada salpingoforectomia<sup>6</sup>. </p>     <p><b>Objetivo</b></p>     <p>Identificar os diferentes riscos de les&#227;o urol&#243;gica (detetada no intraoperat&#243;rio) associados aos diversos tipos de histerectomia (subtotal, total intrafascial, total extrafascial, radical, com ou sem salpingoforectomia), bem como &#224;s diversas vias de abordagem cir&#250;rgica (laparotomia, vaginal e laparoscopia).&#160; </p>     <p><b>Material e m&#233;todos (fluxograma)</b></p>     <p>Pesquisa eletr&#243;nica nas bases de dados <i>Pubmed/Medline</i> <i>COCHRANE, UPTODATE</i> e Col&#233;gios de especialidade de ginecologia e obstetr&#237;cia brit&#226;nico e americano, utilizando os termos <i>MESH</i>: <i>&#171;(hysterectomy) AND (urinary tract injury)&#187;</i>. Os crit&#233;rios de inclus&#227;o foram: estudos humanos, l&#237;ngua inglesa, publicados em 01/12/2000-31/07/2015 e n&#237;veis de evid&#234;ncia I a IV. Os crit&#233;rios de exclus&#227;o foram: artigos publicados antes de 2000/31/12, em l&#237;ngua n&#227;o inglesa, n&#227;o realizados em humanos e estudos n&#227;o dispon&#237;veis na &#237;ntegra. Foram encontrados 8 artigos na pesquisa electr&#243;nica e efetuou-se uma pesquisa adicional manual bibliogr&#225;fica com inclus&#227;o de 11 artigos, perfazendo um total de 19 artigos. </p>     <p>&nbsp;</p>     <p align="center"><a name="f1"></a><img src="/img/revistas/aogp/v11n1/11n1a07f1.jpg"/></p>     
<p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p><b>Resultados </b></p>     <p><b>Resultados da pesquisa bibliogr&#225;fica </b></p>     <p>A pesquisa bibliogr&#225;fica e electr&#243;nica resultou na sele&#231;&#227;o de um total de 19 artigos inclu&#237;dos neste estudo: 4 de n&#237;vel de evid&#234;ncia 1, 11 de n&#237;vel de evid&#234;ncia 2, 3 de n&#237;vel de evid&#234;ncia 3 e 1 de n&#237;vel de evid&#234;ncia 4, segundo a classifica&#231;&#227;o <i>Oxford Centre for Evidence-Based Medicine - Levels of Evidence</i>.</p>     <p><b>Discuss&#227;o (<a href="/img/revistas/aogp/v11n1/11n1a07q1.jpg" target="_blank">Quadro I</a> - <a href="#q6">VI</a>)</b></p>     
<p>Setenta e cinco por cento das les&#245;es do trato urin&#225;rio de causa iatrog&#233;nica cir&#250;rgica s&#227;o atribu&#237;veis a cirurgias ginecol&#243;gicas e obst&#233;tricas<sup>7</sup>.<b> </b>A verdadeira incid&#234;ncia de les&#245;es urin&#225;rias decorrentes de cirurgia ginecol&#243;gica ou de outro foro &#233; dif&#237;cil de estimar, porque a maior parte dos casos reportados incluem apenas doentes com les&#245;es detetadas intraoperatoriamente ou com necessidade de reinterven&#231;&#227;o cir&#250;rgica. </p>     <p>Uma recente revis&#227;o sistem&#225;tica com metan&#225;lise de 2015 (<i>n</i>=40.606) estimou uma incid&#234;ncia de les&#245;es no ureter e na bexiga aquando da realiza&#231;&#227;o de uma histerectomia de 0,3% e 0,8%, respetivamente<sup>8</sup>.</p>     <p>Os principais fatores de risco que aumentam o risco de les&#227;o urol&#243;gica s&#227;o cirurgias e ader&#234;ncias p&#233;lvicas pr&#233;vias, hemorragia, endometriose, obesidade, neoplasias malignas e aumento das dimens&#245;es uterinas<sup>9,10</sup>.</p>     <p>&nbsp;</p>     <p align="center"><a href="/img/revistas/aogp/v11n1/11n1a07q1.jpg" target="_blank"><img src="/img/revistas/aogp/v11n1/11n1a07q1.jpg" width="300" height="167"/><br />   (clique para ampliar ! click to enlarge)</a></p>     
<p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p>&nbsp;</p>     <p align="center"><a name="q2"></a><img src="/img/revistas/aogp/v11n1/11n1a07q2.jpg"/></p>     
<p>&nbsp;</p>     <p>&nbsp;</p>     <p align="center"><a name="q3"></a><img src="/img/revistas/aogp/v11n1/11n1a07q3.jpg"/></p>     
<p>&nbsp;</p>     <p>&nbsp;</p>     <p align="center"><a name="q4"></a><img src="/img/revistas/aogp/v11n1/11n1a07q4.jpg"/></p>     
<p>&nbsp;</p>     <p>&nbsp;</p>     ]]></body>
<body><![CDATA[<p align="center"><a name="q5"></a><img src="/img/revistas/aogp/v11n1/11n1a07q5.jpg"/></p>     
<p>&nbsp;</p>     <p>&nbsp;</p>     <p align="center"><a name="q6"></a><img src="/img/revistas/aogp/v11n1/11n1a07q6.jpg"/></p>     
<p>&nbsp;</p>     <p><b>1. </b><b>Ureter:</b></p>     <p>Les&#245;es ureterais no decorrer de cirurgias ginecol&#243;gicas podem ocorrer ao longo de todo o trajeto ureteral. Os locais de vulnerabilidade por ordem decrescente s&#227;o: ligamento &nbsp;infund&#237;bulop&#233;lvico, art&#233;rias uterinas no ligamento cardinal, fossa pararretal e desembocadura na bexiga<sup>10</sup>. As les&#245;es do ureter s&#227;o mais frequentes justavesicais (75,6%), no ter&#231;o m&#233;dio (17,1%) e justarrenais (7,3%). O ureter esquerdo (59,8%) &#233; o mais frequentemente lesado, seguido do ureter direito (36,6%) e em menor percentagem ambos os ureteres s&#227;o lesados (3,6%)<sup>11</sup>. </p>     <p><b>2. </b><b>Bexiga:</b></p>     <p>O tr&#237;gono &#233; o local onde ocorrem mais frequentemente as les&#245;es na bexiga<sup>9,10</sup>. Les&#245;es que ocorrem no tr&#237;gono vesical podem ser mais graves pela possibilidade de estarem envolvidos os ureteres ou serem lesionados durante a repara&#231;&#227;o da les&#227;o<sup>9,10</sup>.</p>     <p><b>3. </b><b>Uretra: </b></p>     ]]></body>
<body><![CDATA[<p>Um ter&#231;o das les&#245;es ocorrem na por&#231;&#227;o proximal da uretra e as restantes na por&#231;&#227;o distal da uretra. </p>     <p><b>Les&#227;o do trato urin&#225;rio e as diferentes vias de abordagem cir&#250;rgicas para realiza&#231;&#227;o de histerectomia (laparotomia, vaginal e laparoscopia) - <a href="/img/revistas/aogp/v11n1/11n1a07q1.jpg" target="_blank">Quadro I</a><sup>3,12,13,15-18</sup> e <a href="#q2">Quadro II</a><sup>3,14</sup></b></p>     
<p><i>Makinene et al, </i>2001, inclu&#237;ram um total de 10.110 mulheres submetidas a histerectomia, (5.875 por via abdominal, 1.801 por via vaginal e 2.434 por via laparosc&#243;pica) e analisaram as morbilidades resultantes de histerectomia total de acordo com as diferentes abordagens cir&#250;rgicas<sup>12</sup>. Comparativamente &#224; abordagem padr&#227;o por laparotomia com uma incid&#234;ncia para ambas as les&#245;es vesical e ureteral de 0,2%, a via vaginal apresenta a mesma morbilidade urin&#225;ria, o que n&#227;o se verifica com a via laparosc&#243;pica, em que as les&#245;es ureteral e vesical se encontram significativamente aumentadas (Risco relativo (RR): 7,2, (Intervalo de confian&#231;a (IC) 95% 3,4-15,4) para o ureter e RR: 2,7 (IC 95% 1,6-4,4) para a bexiga)<sup>12</sup>.<b> </b>Foi demonstrada uma rela&#231;&#227;o significativa entre o aumento da experi&#234;ncia dos cirurgi&#245;es em histerectomia laparosc&#243;pica e a diminui&#231;&#227;o de les&#245;es no trato urin&#225;rio: cirurgi&#245;es com mais de 30 cirurgias efetuadas t&#234;m uma incid&#234;ncia de de les&#245;es no ureter de 0,50% e na bexiga de 2,0%. Quando realizadas menos de 30 cirurgias a incid&#234;ncia de les&#245;es no ureter &#233; de 2,2% e na bexiga de 0,8%<sup>12</sup>. Os mesmos resultados relativos &#224; experi&#234;ncia dos cirurgi&#245;es n&#227;o foram observados na abordagem por laparotomia ou vaginal, n&#227;o existindo diferen&#231;as significativas. Este estudo apresenta como principais limita&#231;&#245;es tratar-se de um estudo retrospetivo e n&#227;o corrigir poss&#237;veis fatores de confundimento, tal como vi&#233;s de sele&#231;&#227;o, ou seja indica&#231;&#245;es para histerectomia, que s&#227;o fatores de risco para morbilidade urol&#243;gica, tais como endometriose e &#250;tero de dimens&#245;es significativas. </p>     <p>Resultados id&#234;nticos foram observados no estudo <i>eVAluate, Garry et al, </i>2004,<b> </b>um estudo com dois ensaios simult&#226;neos randomizados, multic&#234;ntricos, em que se avaliou a realiza&#231;&#227;o de histerectomias em mulheres com patologias benignas<sup>13</sup>. Um bra&#231;o do estudo comparou mulheres submetidas a histerectomia total por laparotomia (<i>n</i>=292) com a laparoscopica (<i>n</i>=584). O outro bra&#231;o do estudo comparou a via vaginal com a laparosc&#243;pica. A incid&#234;ncia de les&#245;es uretrais foi de 0,9% e na bexiga 2,1% por via laparosc&#243;pica comparativamente a 0,0 % e 1,0 %, respetivamente, para a histerectomia por laparotomia<sup>13</sup>. Os resultados mostraram que a via laparosc&#243;pica se associou a um n&#250;mero significativamente maior das seguintes complica&#231;&#245;es graves: hemorragias graves, les&#245;es na bexiga, problemas anest&#233;sicos graves, com uma incid&#234;ncia de 11,1% por via laparosc&#243;pica e 6,2% por laparotomia (<i>Odds ratio</i> (OR) = 1,91 (IC 95% 0,9-9,1), <i>p</i>=0,02))<sup>13</sup>. </p>     <p>Em 2005<b>, </b><i>Johnson et al<b>, </b></i>(<i>n=</i>3643<i>)</i>,<b> </b>publicaram uma metan&#225;lise de ensaios randomizados, concluindo que as complica&#231;&#245;es do trato urin&#225;rio (quando avaliados em conjunto bexiga e ureter) parecem ser superiores por via laparosc&#243;pica (OR= 2,61 (IC 95% 1,22-5,60)), comparativamente &#224; laparotomia e via vaginal, apesar das diferen&#231;as nas les&#245;es do ureter e bexiga, quando analisadas separadamente, n&#227;o serem significativas<sup>14</sup>. </p>     <p><i>Vakili et al.,</i><b> </b>2005, avaliaram num ensaio prospetivo, multic&#234;ntrico, a incid&#234;ncia de les&#227;o do trato urin&#225;rio em 471 histerectomias totais por indica&#231;&#227;o benigna<sup>15</sup>. Em rela&#231;&#227;o &#224;s les&#245;es no ureter n&#227;o foram encontradas diferen&#231;as significativas nas diferentes vias de histerectomia total (2,2% por laparotomia, 1,4% por via vaginal e 0,0% por via laparosc&#243;pica; <i>p</i>= 0,527)<sup>15</sup>. As mulheres com mais de 50 anos apresentam significativamente maior probabilidade de les&#227;o do ureter (4,7% <i>versus</i> <i>(vs.)</i> 1,0%, <i>p</i>=0,04) <sup>15</sup>. Em rela&#231;&#227;o a les&#245;es na bexiga, n&#227;o foram encontradas diferen&#231;as significativas entre as diferentes vias de abordagem (2,5% por laparotomia, 6,3% por via vaginal e 2,0% por via laparosc&#243;pica; <i>p</i>=0,123)<sup>15</sup>. As histerectomias associadas a corre&#231;&#227;o simult&#226;nea de prolapsos p&#233;lvicos, independentemente da via de realiza&#231;&#227;o, aumentaram o risco de les&#227;o do ureter de 1,2% para 7,3%, (<i>p</i>=0,025)<sup>15</sup>. </p>     <p><i>Cosson et al, </i>2001 <i>(n</i>= 1.604, retrospetivo)<sup>16<i> </i></sup><i>e Brummer </i>2011 (<i>n=</i>5.279,<i> </i>prospetivo)<sup>17</sup>, mostraram que n&#227;o existe qualquer diferen&#231;a estatisticamente significativa ou tend&#234;ncia para maior n&#250;mero de les&#245;es no trato urin&#225;rio qualquer que seja a via de abordagem cir&#250;rgica adotada para realiza&#231;&#227;o de histerectomia (laparotomia, vaginal ou laparosc&#243;pica). <i>Brummer et al</i>, mostraram ainda que a maioria das les&#245;es da bexiga (88%) s&#227;o detetadas intraoperatoriamente, contrariamente &#224;s do ureter (10%)<sup>17</sup>.<b> </b>No primeiro estudo referido os pacientes com cirurgias pr&#233;vias ou cesarianas, assim como &#250;teros com mais de 500g s&#227;o consistentemente inclu&#237;das no grupo de histerectomia por laparotomia, o que pode influenciar os resultados. No estudo de <i>Brummer et al</i> participantes com ader&#234;ncias p&#233;lvicas foram inclu&#237;das em menor n&#250;mero no grupo de doentes submetidas a histerectomia vaginal. Por sua vez, &#250;teros de maiores dimens&#245;es (&gt;500g) est&#227;o presentes mais frequentemente no grupo de mulheres submetidas a histerectomia por laparotomia. </p>     <p>A mais recente revis&#227;o da <i>Cochrane de</i> 2015 acerca desta tem&#225;tica<b> </b>incluiu 47 ensaios randomizados controlados (ERC) (n= 5.102)<sup>3</sup>.<b> </b>Quando comparada a laparotomia com a via vaginal, existem tr&#234;s vezes mais les&#245;es no trato urin&#225;rio ap&#243;s uma histerectomia vaginal, embora n&#227;o haja evid&#234;ncia de diferen&#231;a estatisticamente significativa (OR=3,09 (IC 95% 0,48-19,97), 4 ERC, 439 mulheres)<sup>3</sup>.<b> </b>Comparando a via laparosc&#243;pica com a laparotomia, apesar de n&#227;o ser provada uma diferen&#231;a significativa, existe uma tend&#234;ncia para um maior n&#250;mero de les&#245;es no ureter (OR= 3,46 IC 95% 0,94-12,71), 7 ERC, 1417 mulheres) e bexiga (OR 1,89 (IC 95% 0,91-3,90), 12 ECR, 2.038 mulheres) por via laparosc&#243;pica<sup>3</sup>. Quando as les&#245;es no ureter e bexiga s&#227;o agrupadas, existe uma evid&#234;ncia estatisticamente significativa de maior n&#250;mero de les&#245;es pela via laparosc&#243;pica (OR= 2,44 (IC 95% 1,24-4,80), 13 ERC, 2.140 mulheres)<sup>3</sup>. A principal limita&#231;&#227;o deste estudo &#233; a reduzida informa&#231;&#227;o acerca da metodologia dos estudos e a n&#250;mero da amostra, que acarreta amplos intervalos de confian&#231;a em torno das estimativas feitas. </p>     <p><i>Makienen et al,</i> 2013 (<i>n</i>=5.279), observaram uma diminui&#231;&#227;o do n&#250;mero de complica&#231;&#245;es decorrentes da histerectomia com uma diminui&#231;&#227;o de 17,5% em 1996 para 14,7% em 2006<sup>18</sup>. As les&#245;es no ureter mais frequentemente associadas &#224; cirurgia laparosc&#243;pica diminu&#237;ram de 1,1% em 1996 para 0,3% em 2006 alcan&#231;ando o valor observado na histerectomia por via vaginal. As les&#245;es na bexiga diminu&#237;ram de 1,3% para 1%<sup>18</sup>.</p>     <p>Assim, das 7 publica&#231;&#245;es,<b> </b>apenas um estudo mostrou uma diferen&#231;a estatisticamente significativa entre laparotomia e a via laparosc&#243;pica a favor da histerectomia por laparotomia em rela&#231;&#227;o a les&#245;es no ureter. Dois estudos mostraram risco significativamente superior de les&#245;es urin&#225;rias globais na via laparosc&#243;pica, comparativamente &#224; laparotomia. As principais limita&#231;&#245;es dos estudos consistem na presen&#231;a de vi&#233;ses de sele&#231;&#227;o e o mau/n&#227;o controlo de importantes vari&#225;veis de confundimento, nomeadamente experi&#234;ncia do cirurgi&#227;o e fatores de risco para les&#227;o urol&#243;gica. </p>     ]]></body>
<body><![CDATA[<p><b>II. Les&#245;es no trato urin&#225;rio e diferentes tipos de histerectomia</b></p>     <p><b>IIA . Histerectomia subtotal <i>versus</i> total e les&#227;o do trato urin&#225;rio - <a href="#q3">Quadro III</a><sup>20-25</sup></b></p>     <p>A histerectomia total dominou desde os anos 60 at&#233; meados dos anos 90. Em 1997 a histerectomia subtotal voltou a ser popular, ressurgimento coincidente com a expans&#227;o da cirurgia laparosc&#243;pica<sup>19</sup>. </p>     <p>A remo&#231;&#227;o do colo do &#250;tero e controlo da hemorragia na sutura vaginal constituem duas etapas importantes do decorrer de uma histerectomia e que podem propiciar o aparecimento de complica&#231;&#245;es, procedimentos estes evitados pela histerectomia subtotal<sup>19</sup>. </p>     <p><i>Harmanli et al</i>, 2009 (estudo retrospetivo, <i>n</i>=1.016), analisaram as les&#245;es do trato urin&#225;rio em conjunto e mostraram um aumento significativo da incid&#234;ncia de les&#245;es urol&#243;gicas na histerectomia laparosc&#243;pica total (2,2%) quando comparada com a histerectomia laparosc&#243;pica subtotal (0,5%), (OR= 4,75 (IC 95% 1,21-18,56))<sup>20</sup>. </p>     <p><i>Kiran et al,<b> </b></i>2015 (estudo coorte retrospetivo, <i>n</i>= 377 073) referem que existe associa&#231;&#227;o entre les&#227;o urin&#225;ria e a remo&#231;&#227;o total ou parcial do &#250;tero<sup>21</sup>. Existe um risco duas vezes superior de les&#245;es no ureter na histerectomia total por laparotomia (3,97%) quando comparada com a histerectomia subtotal por laparotomia (1,94%) (<i>p</i>=0,028)<sup>21</sup>. Estes resultados s&#227;o obtidos num grupo de mulheres submetido a histerectomia por cancro no ov&#225;rio, neoplasia esta que pode condicionar altera&#231;&#245;es na morfologia e fixa&#231;&#227;o do ureter, tornando mais suscetivel a sua les&#227;o, podendo contribuir para uma maior incid&#234;ncia de les&#245;es no ureter, em compara&#231;&#227;o com as incid&#234;ncias reportadas nos restantes estudos inclu&#237;dos. </p>     <p><i>Cupillo et al</i>, 2003 (estudo coorte retrospetivo, <i>n</i>= 314) observaram uma incid&#234;ncia de les&#245;es no ureter e bexiga de 0,6% e 1,3%, respetivamente, na histerectomia laparosc&#243;pica total e nenhuma les&#227;o foi observada na histerectomia laparosc&#243;pica subtotal<sup>22</sup>. As diferen&#231;as encontradas n&#227;o foram estatisticamente significativas para les&#227;o no ureter (<i>p</i>=0,319) e na bexiga (<i>p</i>=0,158), tendo em conta os dois tipos de histerectomia laparosc&#243;pica<sup>22</sup>. Neste estudo existe uma diferen&#231;a significativa em rela&#231;&#227;o ao n&#250;mero de cirurgias pr&#233;vias realizadas pelas participantes entre os dois grupos em estudo, com um maior n&#250;mero de interven&#231;&#245;es pr&#233;vias no grupo de doentes submetidas a histerectomia subtotal.</p>     <p><i>Learman et al,</i> 2003<b> </b>num estudo randomizado (<i>n</i>=135)<sup>23 </sup>e <i>Wallwiener et al,</i> 2013, estudo prospetivo (<i>n</i>=1 952)<sup>24<b> </b></sup>conclu&#237;ram que a les&#227;o do trato urin&#225;rio durante a histerectomia abdominal, no primeiro estudo, e laparosc&#243;pica, no segundo estudo, &#233; incomum e sem diferen&#231;a estatisticamente significativa, quando usada a abordagem total ou subtotal. Este &#250;ltimo estudo concluiu ainda que as complica&#231;&#245;es intraoperat&#243;rias (hemorragia; les&#227;o do retosigmoide, do ureter e/ou bexiga; les&#227;o da art&#233;ria epig&#225;strica) na histerectomia laparosc&#243;pica subtotal e total n&#227;o revelam diferen&#231;a significativa (0,2% e 0,7%, respetivamente,<i> p</i>=0,225)<sup>24</sup>. Neste estudo foi encontrada uma diferen&#231;a entre as participantes inclu&#237;das em cada grupo, sendo que o grupo de pacientes submetidas a histerectomia subtotal apresenta uma m&#233;dia inferior de cirurgias pr&#233;vias por laparoscopia/laparotomia ou cesarianas, o que pode interferir nos melhores resultados encontrados na abordagem subtotal, uma vez que as vari&#225;veis referidas interferem no risco de les&#227;o no trato urin&#225;rio.<b> </b></p>     <p>O mesmo foi observado num estudo mais recente de <i>Tan-Kim et al<b>,</b></i> 2015 (<i>n</i>=3 523), que comparou a histerectomia total e subtotal por via laparosc&#243;pica, obtendo uma incid&#234;ncia de les&#245;es no ureter na histerectomia laparosc&#243;pica total de 0,5% e na histerectomia laparosc&#243;pica subtotal de 0,7%, sem diferen&#231;a significativa (<i>p</i>=0,32)<sup>25</sup>. O mesmo se observou em rela&#231;&#227;o a les&#245;es na bexiga, com uma incid&#234;ncia de 0,6% na abordagem total e de 1,0% na abordagem subtotal (<i>p</i>=0,24)<sup>25</sup>. </p>     <p>Uma revis&#227;o da <i>Cochrane</i> realizada em 2012, que incluiu 9 ensaios randomizados, (<i>n</i>=1.553), comparou os resultados a curto e longo prazo da histerectomia subtotal com a histerectomia total em doentes com patologias benignas, por via abdominal e laparosc&#243;pica<sup>26</sup>. Mostraram que apenas houve uma diferen&#231;a significativa no intraoperat&#243;rio em rela&#231;&#227;o &#224; hemorragia intraoperat&#243;ria e tempo operat&#243;rio, sendo estes menores na histerectomia subtotal. Em rela&#231;&#227;o a les&#227;o de estruturas adjacentes, incluindo o trato urin&#225;rio, n&#227;o foram encontradas diferen&#231;as<sup>26</sup>.<b> </b>A maior parte dos ensaios inclu&#237;dos nesta revis&#227;o s&#227;o pequenos (m&#225;ximo n=279 e m&#237;nimo n=63) e com algumas falhas metodol&#243;gicas (falha nos m&#233;todos de aloca&#231;&#227;o dos doentes nos grupo de compara&#231;&#227;o, perda de seguimento dos doentes, fatores de confundimento n&#227;o controlados, entre outros). </p>     ]]></body>
<body><![CDATA[<p>Parece evidente em alguns estudos que a histerectomia subtotal apresenta vantagens em rela&#231;&#227;o &#224;s complica&#231;&#245;es no per&#237;odo intra e p&#243;s-operat&#243;rio a curto prazo<sup>27</sup>.<b> </b>A diminui&#231;&#227;o significativa da les&#227;o do trato urin&#225;rio, na histerectomia subtotal, s&#243; foi verificada em dois dos seis ensaios. </p>     <p>Os resultados dos estudos s&#227;o frequentemente contradit&#243;rios, dificilmente compar&#225;veis entre si, pois verifica-se heterogeneidade nos estudos no controlo de fatores de confundimento, o que vai limitar as conclus&#245;es extrapol&#225;veis, nomeadamente as vantagens reais da histerectomia subtotal em rela&#231;&#227;o &#224; histerectomia total. </p>     <p><b>IIB. Histerectomia total intrafascial <i>versus</i> hiterectomia total extrafascial e les&#245;es no trato urin&#225;rio - <a href="#q4">Quadro IV</a><sup>5,29</sup></b></p>     <p>Em 1950 <i>Aldridge e Meredith</i> descrevem a t&#233;cnica intrafascial durante uma histerectomia total por laparotomia para o tratamento de patologias benignas do colo do &#250;tero com preserva&#231;&#227;o da f&#225;scia pubovesicocervical<sup>28</sup>.</p>     <p>No estudo de <i>A.Conde Aguedelo</i>, 2000, ensaio prospetivo (<i>n</i>=867), os autores defendem que a remo&#231;&#227;o do colo do &#250;tero &#233; um risco acrescido para les&#245;es do trato urin&#225;rio, uma vez que muitas les&#245;es ocorrem nos 3 cm inferiores do ureter, junto &#224; bexiga e, com a t&#233;cnica intrafascial, reduz-se a incid&#234;ncia de les&#245;es do colo do &#250;tero<sup>29</sup>. Neste estudo prospetivo, em 267 histerectomias abdominais realizadas pela t&#233;cnica cir&#250;rgica intrafascial a les&#227;o de &#243;rg&#227;os adjacentes (0,4 % na bexiga, 0,1% no ureter e 0% retosigm&#243;ide) foi de 0,5%, comparando com 2% de les&#245;es de &#243;rg&#227;os adjacentes na histerectomia extrafascial por laparotomia descrita na literatura<sup>29</sup>. A maior limita&#231;&#227;o neste estudo consiste no facto de se tratar de um ensaio experimental n&#227;o controlado, onde todos os participantes foram submetidos &#224; interven&#231;&#227;o cir&#250;rgica (histerectomia total com t&#233;cnica intrafascial) sem grupo de compara&#231;&#227;o. </p>     <p>No estudo, <i>Kaya et al</i>, 2004 (estudo prospetivo, <i>n</i>=80) foi observada uma incid&#234;ncia de 2,6% de les&#245;es na bexiga nas histerectomias por laparotomia realizadas com o uso da t&#233;cnica extrafascial (<i>n</i>=38) e nenhuma les&#227;o foi observada na histerectomia com o uso da t&#233;cnica intrafascial (<i>n</i>=42)<sup>5</sup>. Contudo, a diferen&#231;a n&#227;o era estatisticamente significativa. &#160;&#160;&#160; </p>     <p>A t&#233;cnica intrafascial &#233; classicamente referida como uma t&#233;cnica de menor risco de les&#227;o de estruturas adjacentes, especialmente ureter, bexiga e retosigm&#243;ide. No entanto, na evid&#234;ncia cient&#237;fica pesquisada n&#227;o foram encontradas diferen&#231;as significativas entre a t&#233;cnica intrafascial e extrafascial. A robustez cient&#237;fica n&#227;o &#233; grande, pois os estudos nesta &#225;rea incluem amostras diminutas, mau controlo das vari&#225;veis de confundimento e n&#237;vel de qualidade baixo.</p>     <p><b>IIC. Histerectomia radical <i>versus</i> total e les&#227;o do trato urin&#225;rio - <a href="#q5">Quadro V</a><sup>7,30,31</sup></b></p>     <p>O estudo retrospetivo (<i>n</i>=67) de <i>Bai, SW et al</i>, 2006, mostrou que a incid&#234;ncia de les&#245;es do trato urin&#225;rio &#233; de 0,76%, quando realizada uma histerectomia radical por laparotomia, incid&#234;ncia esta superior &#224; observada na histerectomia total por laparotomia de 0,26% (<i>OR</i> 3,847 (1,225-12,082), <i>p</i>=0,021)<sup>30</sup>. Os autores acreditam que estes valores podem ser justificados pelo facto de durante este procedimento cir&#250;rgico ser necess&#225;ria uma disse&#231;&#227;o e recess&#227;o cir&#250;rgica mais extensa dos &#243;rg&#227;os p&#233;lvicos<sup>30</sup>. Este estudo apresenta como principal limita&#231;&#227;o um reduzido n&#250;mero de participantes com complica&#231;&#245;es no trato urin&#225;rio, n&#227;o permitindo a obten&#231;&#227;o de compara&#231;&#245;es com elevado poder estat&#237;stico. </p>     <p>Resultados id&#234;nticos foram tamb&#233;m observados no estudo retrospetivo (<i>n</i>=41) de <i>Rao, Dapang et al, </i>2012, onde a incid&#234;ncia de les&#245;es no ureter foi de 0,913% na histerectomia radical por laparotomia e 0,026% na histerectomia total por laparotomia<sup>31</sup>. Nas les&#245;es da bexiga a incid&#234;ncia foi de 0,581% na histerectomia radical por laparotomia e 0,032% na histerectomia total por laparotomia<sup>31</sup>. Um aspeto a ter em conta neste estudo &#233; que, perante patologias p&#233;lvicas graves, para as quais se esperava a realiza&#231;&#227;o de procedimentos mais dif&#237;ceis, foi colocado um cateter ureteral bilateralmente no pr&#233;-operat&#243;rio (sem crit&#233;rios definidos para a sua coloca&#231;&#227;o, dependendo apenas da prefer&#234;ncia do cirurgi&#227;o), o que pode reduzir o n&#250;mero de les&#245;es no ureter. </p>     ]]></body>
<body><![CDATA[<p>O estudo retrospetivo (<i>n</i>=97) de <i>Lee et al</i>, 2012, foi de encontro aos resultados observados nos estudos anteriores<sup>7</sup>. A incid&#234;ncia de les&#245;es no trato urin&#225;rio foi de 2,78% na histerectomia radical e 0,38% na histerectomia total por laparotomia. Particularizando, a incid&#234;ncia de les&#245;es na bexiga e ureter foi de 1,67% e 0,37%, respetivamente, na histerectomia radical. J&#225; na histerectomia por laparotomia a incid&#234;ncia de les&#245;es na bexiga foi de 0,28% e no ureter de 0,10%. Das doentes com les&#227;o no trato urin&#225;rio, 71,8% apresentaram les&#227;o na bexiga e 23,9% les&#227;o no ureter<sup>7</sup>. </p>     <p>Uma das indica&#231;&#245;es mais frequentes para histerectomia radical &#233; o cancro invasor do colo do &#250;tero. Nestas situa&#231;&#245;es, o estadio da doen&#231;a parece ser o principal fator de risco para les&#245;es no trato urin&#225;rio, sendo que em estadios mais avan&#231;ados (maior dimens&#227;o tumoral, maior grau de invas&#227;o linfovascular e perineural, maior grau de neovasculariza&#231;&#227;o pericervical, ader&#234;ncias p&#233;lvicas com altera&#231;&#227;o anatomia normal da pelve, entre outros fatores) &#233; mais dif&#237;cil a identifica&#231;&#227;o das estruturas, aumentando assim a probabilidade de les&#227;o do trato urin&#225;rio. Cirurgia oncoginecol&#243;gica implica um grau de resse&#231;&#227;o mais radical, especificamente no que respeita &#224; extens&#227;o da ex&#233;rese dos param&#233;trios<sup>32</sup>.</p>     <p>Pelo fato da histerectomia total e histerectomia radical possu&#237;rem geralmente diferentes indica&#231;&#245;es (sendo a histerectomia radical indicada em situa&#231;&#245;es espec&#237;ficas de cancro do colo do &#250;tero, do endom&#233;trio, da por&#231;&#227;o superior da vagina, entre outras), torna-se dif&#237;cil encontrar estudos com resultados compar&#225;veis, com vari&#225;veis de confundimento devidamente controladas e sem vi&#233;ses de sele&#231;&#227;o. A leitura dos resultados no que respeita a compara&#231;&#227;o da morbilidade urol&#243;gica entre dois tipos de histerectomias referidos &#233; assim limitada. </p>     <p>A maioria dos estudos supramencionados apenas evidencia uma maior tend&#234;ncia, n&#227;o estatisticamente significativa, para les&#245;es do trato urin&#225;rio durante a realiza&#231;&#227;o de uma histerectomia radical comparativamente aos restantes tipos de histerectomia. Apenas um ensaio mostrou uma diferen&#231;a significativa, com maior n&#250;mero de les&#245;es no trato urin&#225;rio na histerectomia radical por laparotomia. </p>     <p><b>IID. Histerectomia com ou sem salpingoforectomia e les&#245;es no trato urin&#225;rio - <a href="#q6">Quadro VI</a><sup>15,25</sup></b></p>     <p>A histerectomia com concomitante salpingoforectomia pode tornar o procedimento cir&#250;rgico tecnicamente mais dif&#237;cil com subsequente aumento da incid&#234;ncia de complica&#231;&#245;es intraoperat&#243;rias<sup>33</sup>. </p>     <p>No estudo de<i> Vakili et al</i>, 2005, (<i>n</i>=471) foi observada uma maior tend&#234;ncia de les&#245;es no ureter e bexiga, com incid&#234;ncia de 2,5% e 3,9%, respetivamente, quando realizada histerectomia com salpingoforectomia bilateral, comparativamente &#224; histerectomia sem salpingoforectomia, que apresenta uma incid&#234;ncia de les&#227;o no ureter de 1,1% e na bexiga de 3,4%<sup>15</sup>. Neste estudo, a salpingoforectomia foi realizada em 62,5% das participantes nas quais foi detetada les&#227;o no ureter e em 43,0% das participantes onde n&#227;o se verificou les&#227;o no ureter (<i>p</i>=0,301)<sup>15</sup>. Em rela&#231;&#227;o &#224;s les&#245;es na bexiga, 41,2% das participantes com les&#227;o da bexiga realizaram salpingoforectomia e 43,4% das participantes sem les&#227;o na bexiga realizaram este procedimento concomitante durante a histerectomia (<i>p</i>=0,856)<sup>15</sup>.</p>     <p>Resultados semelhantes foram obtidos num estudo mais recente, de<i> Tan-Kim et al</i> (estudo retrospetivo, <i>n=</i>3523),<b> </b>2015<sup>25</sup>. As les&#245;es no ureter durante a histerectomia ocorrem com uma incid&#234;ncia de 0,64% sem salpingoforectomia concomitante, 0,82% se salpingoforectomia unilateral e 0,53% se bilateral<sup>25</sup>. Em rela&#231;&#227;o &#224;s les&#245;es na bexiga, 0,83% das les&#245;es ocorrem sem salpingoforectomia, 0,81% na salpingoforectomia unilateral e 0,70% se bilateral<sup>25</sup>. Os autores avaliaram que estas diferen&#231;as entre histerectomia com e sem salpingoforectomia bilateral n&#227;o s&#227;o estatisticamente significativas.</p>     <p>Os estudos inclu&#237;dos nesta an&#225;lise n&#227;o mostraram diferen&#231;a significativa em rela&#231;&#227;o a les&#245;es no trato urin&#225;rio, quando realizada histerectomia com ou sem salpingooforectomia. Contudo, muitas les&#245;es que ocorrem s&#227;o classificadas como les&#245;es associadas &#224; histerectomia, uma vez que n&#227;o &#233; especificado nos registos ou n&#227;o &#233; poss&#237;vel a distin&#231;&#227;o do momento exato em que a les&#227;o ocorre. Deste modo, a atribui&#231;&#227;o das les&#245;es no trato urin&#225;rio &#224; histerectomia ou &#224; salpingoforectomia, quando estes procedimentos s&#227;o realizados concomitantemente, &#233; dif&#237;cil. </p>     <p><b>Conclus&#227;o</b></p>     ]]></body>
<body><![CDATA[<p>No que diz respeito &#224;s diferentes abordagens cir&#250;rgicas da histerectomia, alguns estudos recentes ainda associam a histerectomia laparosc&#243;pica a um maior risco de les&#227;o do trato urin&#225;rio, comparativamente &#224; laparotomia e via vaginal. Contudo, cada vez mais aproxima os seus resultados &#224;s restantes vias de abordagem cir&#250;rgica, corroborado pelo fato de a maioria dos estudos recentes j&#225; mostrarem n&#227;o existir diferen&#231;a significativa entre as diversas vias e a morbilidade urol&#243;gica.&#160; </p>     <p>Em rela&#231;&#227;o aos diferentes tipos de histerectomia, apenas dois estudos mostraram que a histerectomia total (quer por laparotomia, quer por laparoscopia) apresenta um risco significativamente maior de les&#245;es no ureter (o mesmo n&#227;o se verificou em rela&#231;&#227;o a les&#245;es na bexiga), quando comparada com a histerectomia subtotal. </p>     <p>A histerectomia intrafascial est&#225; descrita na literatura como sendo uma t&#233;cnica que confere uma prote&#231;&#227;o maior das estruturas p&#233;lvicas adjacentes, especialmente do ureter, da bexiga e do retosigm&#243;ide, no entanto, a evid&#234;ncia cient&#237;fica n&#227;o revela diferen&#231;a significativa entre estas duas t&#233;cnicas. </p>     <p>Em rela&#231;&#227;o &#224; histerectomia radical, esta encontra-se associada a maior resse&#231;&#227;o cir&#250;rgica, acarretando maior risco te&#243;rico de les&#227;o, que &#233; evidenciado significativamente em les&#245;es urol&#243;gicas avaliadas no conjunto, mas n&#227;o isoladamente da bexiga ou do ureter. </p>     <p>A histerectomia com salpingoforectomia n&#227;o adiciona risco significativo de les&#245;es urin&#225;rias. </p>     <p>As principais limita&#231;&#245;es da evid&#234;ncia cient&#237;fica residem na heterogeneidade dos estudos: tamanho amostral geralmente diminuto associado a um n&#250;mero reduzido de complica&#231;&#245;es urol&#243;gicas com subsequente grande amplitude dos intervalos de confian&#231;a e baixo poder estat&#237;stico; desenho dos estudos com reduzido n&#250;mero de ensaios randomizados; discrep&#226;ncia na metodologia de diagn&#243;stico de les&#227;o urol&#243;gica e aus&#234;ncia de controlo de fatores de confundimento e vi&#233;ses de sele&#231;&#227;o, tais como: fatores de risco para les&#227;o urol&#243;gica e experi&#234;ncia do cirurgi&#227;o. </p>     <p>&nbsp;</p>     <p><b>REFER&#202;NCIAS BIBLIOGR&#193;FICAS </b></p>     <!-- ref --><p>1. Wu JM, Wechter ME, Geller EJ, Nguyen TV, Visco AG. Hysterectomy rates in the United States, 2003. Obstet Gynecol, 2007;110:1091-1095.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1862029&pid=S1646-5830201700010000700001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> </p>     ]]></body>
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