<?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>0016-3813</journal-id>
<journal-title><![CDATA[Gaceta médica de México]]></journal-title>
<abbrev-journal-title><![CDATA[Gac. Méd. Méx]]></abbrev-journal-title>
<issn>0016-3813</issn>
<publisher>
<publisher-name><![CDATA[Academia Nacional de Medicina de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0016-38132005000500002</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Características clínicas y evolución de pacientes con SIDA y dolor abdominal agudo]]></article-title>
<article-title xml:lang="en"><![CDATA[Clinical characteristics and follow-up of patients with AIDS and acute abdominal pain]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ferat-Osorio]]></surname>
<given-names><![CDATA[Eduardo]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Guzmán-Valdivia Gómez]]></surname>
<given-names><![CDATA[Gilberto]]></given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rosales Blasco]]></surname>
<given-names><![CDATA[Lourdes]]></given-names>
</name>
<xref ref-type="aff" rid="A03"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Treviño-Pérez]]></surname>
<given-names><![CDATA[Sandra]]></given-names>
</name>
<xref ref-type="aff" rid="A04"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nieto-Cisneros]]></surname>
<given-names><![CDATA[Leopoldo]]></given-names>
</name>
<xref ref-type="aff" rid="A04"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Majluf-Cruz]]></surname>
<given-names><![CDATA[Abraham]]></given-names>
</name>
<xref ref-type="aff" rid="A05"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,IMSS Hospital de Especialidades Unidad de Investigación Médica en Inmunoquímica]]></institution>
<addr-line><![CDATA[México D.F.]]></addr-line>
</aff>
<aff id="A02">
<institution><![CDATA[,IMSS Departamento de Cirugía General ]]></institution>
<addr-line><![CDATA[México D.F.]]></addr-line>
</aff>
<aff id="A03">
<institution><![CDATA[,IMSS Hospital de Especialidades Departamento de Patología]]></institution>
<addr-line><![CDATA[México D.F.]]></addr-line>
</aff>
<aff id="A04">
<institution><![CDATA[,IMSS Clínica de SIDA ]]></institution>
<addr-line><![CDATA[México D.F.]]></addr-line>
</aff>
<aff id="A05">
<institution><![CDATA[,IMSS Unidad de Investigación Médica en Trombosis, Hemostasia y Aterogénesis ]]></institution>
<addr-line><![CDATA[México DF]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>10</month>
<year>2005</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>10</month>
<year>2005</year>
</pub-date>
<volume>141</volume>
<numero>5</numero>
<fpage>357</fpage>
<lpage>362</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0016-38132005000500002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0016-38132005000500002&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0016-38132005000500002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Los síntomas abdominales son frecuentes en el SIDA y el dolor abdominal es un reto diagnóstico que puede requerir cirugía electiva o urgente aunque la información acerca de esta última es pobre. En este estudio analizamos los hallazgos clínicos y evolución de pacientes con SIDA y dolor abdominal agudo. En un periodo de dos años, recolectamos variables demográficas y de laboratorio, síntomas clínicos, diagnóstico inicial, hallazgos quirúrgicos, diagnóstico postquirúrgico, hallazgos histopatológicos y complicaciones postoperatorias de pacientes con SIDA y dolor abdominal agudo. De 232 pacientes hospitalizados, 34 tuvieron dolor abdominal agudo: 32 hombres y 2 mujeres (mediana de edad = 32 años; intervalos 26 a 58). Veintidós pacientes requirieron manejo quirúrgico. Ocho pacientes presentaron complicaciones postquirúrgicas; cinco requirieron seis segundas intervenciones. Ocurrieron tres muertes en los 30 días luego de la cirugía inicial. La supervivencia para los pacientes tratados médicamente fue 4 meses (1 a 17), contra 6.5 meses (1 a 20) del grupo quirúrgico. El médico debe estar alerta acerca de las posibilidades diagnósticas del enfermo con SIDA y dolor abdominal agudo. Demorar la cirugía puede ser letal. La cirugía tiene un papel importante en el tratamiento integral del paciente con SIDA.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abdominal symptoms frequently affect patients with AIDS. Acute abdominal pain is a diagnostic challenge that may require elective or urgent surgical treatment, although information about the latter is scarce. In this study we analyzed the clinical findings and follow up of acute abdominal pain complicating patients with AIDS. In a two-year period, we collected several variables from patients with AIDS and acute abdominal pain: demographic, laboratory, clinical symptoms, initial diagnosis, surgical findings, post surgical and histopathological diagnosis and post surgical complications. From 232 hospitalized patients, 34 had acute abdominal pain: 32 male and 2 women (median age = 32 years; range 26 to 58 years). Twenty-two patients required surgical treatment. Eight patients had a post surgical complication; in five of them, six surgical re interventions were performed. Three deaths occurred in the 30 day period after surgery. Survival for patients conservatively treated was 4 months (1 to 17 months), vs. 6.5 months (1 to 20 months) in the surgically treated group. Physicians should be aware about the several diagnostic possibilities of acute abdominal pain complicating patients with AIDS. Delay of surgery in these patients may be lethal. Surgery has an important role in the integral treatment of patients with AIDS.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[SIDA]]></kwd>
<kwd lng="es"><![CDATA[cirugía abdominal urgente]]></kwd>
<kwd lng="es"><![CDATA[dolor abdominal agudo]]></kwd>
<kwd lng="en"><![CDATA[AIDS]]></kwd>
<kwd lng="en"><![CDATA[urgent abdominal surgery]]></kwd>
<kwd lng="en"><![CDATA[acute abdominal pain]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Art&iacute;culo original</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>Caracter&iacute;sticas cl&iacute;nicas y evoluci&oacute;n de pacientes con SIDA y dolor abdominal agudo</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="3"><b>Clinical characteristics and follow&#150;up of patients with AIDS and acute abdominal pain</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>Eduardo Ferat&#150;Osorio,&ordf; Gilberto Guzm&aacute;n&#150;Valdivia G&oacute;mez,<sup>b</sup> Lourdes Rosales Blasco,<sup>c</sup> Sandra Trevi&ntilde;o&#150;P&eacute;rez,<sup>d </sup>Leopoldo Nieto&#150;Cisneros,<sup>d</sup> y Abraham Majluf&#150;Cruz<sup>d,e,</sup>*</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>&ordf; Departamento de Cirug&iacute;a Gastrointestinal, Unidad de Investigaci&oacute;n M&eacute;dica en Inmunoqu&iacute;mica, Hospital de Especialidades, CMNSXXI. IMSS, M&eacute;xico, D.F.</i></font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>b </sup>Departamento de Cirug&iacute;a General, HGR Gabriel Mancera, IMSS, M&eacute;xico, D.F.</i></font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><i><sup>c</sup> Departamento de Patolog&iacute;a, Hospital de Especialidades, CMNSXXI, IMSS, M&eacute;xico, D.F.</i></font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>d</sup> Cl&iacute;nica de SIDA, HGR Gabriel Mancera, IMSS, M&eacute;xico, D.F.</i></font></p>     <p align="justify"><font face="verdana" size="2"><i><sup>e </sup>Unidad de Investigaci&oacute;n M&eacute;dica en Trombosis, Hemostasia y Aterog&eacute;nesis, HGR Gabriel Mancera, IMSS, M&eacute;xico, D.F.</i></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>* Correspondencia y solicitud de sobretiros: </b>    <br>     <i>Abraham Majluf&#150;Cruz,     <br>     Unidad de Investigaci&oacute;n M&eacute;dica en Trombosis, Hemostasia y Aterog&eacute;nesis, HGR Gabriel Mancera, IMSS,     <br>     Apartado Postal 12&#150;1100, M&eacute;xico 12, DF, M&eacute;xico,     <br>   Tel/Fax: (55) 5639&#150;4688. </i>    <br> Correo electr&oacute;nico: <a href="mailto:amajlufc@prodigy.net.mx">amajlufc@prodigy.net.mx</a></font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">Recibido en su versi&oacute;n modificada: 21 de diciembre del 2004    <br>    aceptado: 7 de enero del 2005</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>     <p align="justify"><font face="verdana" size="2"><i>Los s&iacute;ntomas abdominales son frecuentes en el SIDA y el dolor abdominal es un reto diagn&oacute;stico que puede requerir cirug&iacute;a electiva o urgente aunque la informaci&oacute;n acerca de esta &uacute;ltima es pobre. En este estudio analizamos los hallazgos cl&iacute;nicos y evoluci&oacute;n de pacientes con SIDA y dolor abdominal agudo. En un periodo de dos a&ntilde;os, recolectamos variables demogr&aacute;ficas y de laboratorio, s&iacute;ntomas cl&iacute;nicos, diagn&oacute;stico inicial, hallazgos quir&uacute;rgicos, diagn&oacute;stico postquir&uacute;rgico, hallazgos histopatol&oacute;gicos y complicaciones postoperatorias de pacientes con SIDA y dolor abdominal agudo. De 232 pacientes hospitalizados, 34 tuvieron dolor abdominal agudo: 32 hombres y 2 mujeres (mediana de edad = 32 a&ntilde;os; intervalos 26 a 58). Veintid&oacute;s pacientes requirieron manejo quir&uacute;rgico. Ocho pacientes presentaron complicaciones postquir&uacute;rgicas; cinco requirieron seis segundas intervenciones. Ocurrieron tres muertes en los 30 d&iacute;as luego de la cirug&iacute;a inicial. La supervivencia para los pacientes tratados m&eacute;dicamente fue 4 meses (1 a 17), contra 6.5 meses (1 a 20) del grupo quir&uacute;rgico. El m&eacute;dico debe estar alerta acerca de las posibilidades diagn&oacute;sticas del enfermo con SIDA y dolor abdominal agudo. Demorar la cirug&iacute;a puede ser letal. La cirug&iacute;a tiene un papel importante en el tratamiento integral del paciente con SIDA.</i></font></p>     <p align="justify"><font face="verdana" size="2"><b>Palabras clave: </b><i>SIDA, cirug&iacute;a abdominal urgente, dolor abdominal agudo</i></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Summary</b></font></p>     <p align="justify"><font face="verdana" size="2"><i>Abdominal symptoms frequently affect patients with AIDS. Acute abdominal pain is a diagnostic challenge that may require elective or urgent surgical treatment, although information about the latter is scarce. In this study we analyzed the clinical findings and follow up of acute abdominal pain complicating patients with AIDS. In a two&#150;year period, we collected several variables from patients with AIDS and acute abdominal pain: demographic, laboratory, clinical symptoms, initial diagnosis, surgical findings, post surgical and histopathological diagnosis and post surgical complications. From 232 hospitalized patients, 34 had acute abdominal pain: 32 male and 2 women (median age = 32 years; range 26 to 58 years). Twenty&#150;two patients required surgical treatment. Eight patients had a post surgical complication; in five of them, six surgical re interventions were performed. Three deaths occurred in the 30 day period after surgery. Survival for patients conservatively treated was 4 months (1 to 17 months), </i>vs. <i>6.5 months (1 to 20 months) in the surgically treated group. Physicians should be aware about the several diagnostic possibilities of acute abdominal pain complicating patients with AIDS. Delay of surgery in these patients may be lethal. Surgery has an important role in the integral treatment of patients with AIDS.</i></font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Key words: </b><i>       AIDS, urgent abdominal surgery, acute abdominal pain</i></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Introducci&oacute;n</b></font></p>     <p align="justify"><font face="verdana" size="2">La consecuencia final de la infecci&oacute;n por el VIH es el S&iacute;ndrome de Inmunodeficiencia Adquirida (SIDA) que se caracteriza por disminuci&oacute;n del n&uacute;mero de linfocitos T CD4+, as&iacute; como por una funci&oacute;n defectuosa de los mismos, lo que incrementa el riesgo de enfermedades neopl&aacute;sicas o de infecciones oportunistas que ocasionalmente pueden ser letales.<sup>1,</sup><sup>2</sup> Los s&iacute;ntomas abdominales son algunas de las manifestaciones cl&iacute;nicas que con mayor frecuencia sufren estos pacientes. Se ha informado que durante la evoluci&oacute;n del padecimiento 50% a 90% de los enfermos con SIDA presentan alg&uacute;n s&iacute;ntoma abdominal. Los s&iacute;ntomas abdominales m&aacute;s frecuentes comprenden diarrea, disfagia, dolor abdominal, n&aacute;usea, v&oacute;mito, ictericia y dolor anorrectal.<sup>3,</sup><sup>4</sup> Los s&iacute;ntomas abdominales y m&aacute;s espec&iacute;ficamente el dolor abdominal representan un reto diagn&oacute;stico debido a la amplia variedad de entidades cl&iacute;nicas que pueden estar asociadas: infecciones oportunistas y no oportunistas, neoplasias abdominales, visceromegalias o enfermedades inflamatorias.</font></p>     <p align="justify"><font face="verdana" size="2">Al igual que en la poblaci&oacute;n general, el dolor abdominal agudo en los pacientes con SIDA puede requerir en cualquier momento de cirug&iacute;a electiva o urgente.<sup>5,</sup><sup>6</sup> Se ha descrito que casi 18% de los pacientes con SIDA requerir&aacute;n de un procedimiento quir&uacute;rgico durante el transcurso de su enfermedad.<sup>7 </sup>Trabajos previos acerca de la cirug&iacute;a abdominal en pacientes con SIDA han descrito una tasa de mortalidad que var&iacute;a entre 25% y 50%.<sup>8</sup>,<sup>9</sup> Debido a que los pacientes con SIDA sometidos a tratamiento quir&uacute;rgico abdominal pueden tener un mayor riesgo de complicaciones post&#150;operatorias, m&uacute;ltiples estudios se han realizado para determinar si existe alg&uacute;n factor predictivo de mal pron&oacute;stico en estos individuos. La cuenta total de leucocitos y la de c&eacute;lulas T CD4+ se consideran factores pron&oacute;sticos en este sentido, pero s&oacute;lo se han estudiado en pacientes sometidos a cirug&iacute;a abdominal electiva.<sup>10&#150;</sup><sup>12 </sup>De hecho, la mayor&iacute;a de los estudios acerca de la cirug&iacute;a abdominal en pacientes con SIDA se enfoca a enfermos sometidos a cirug&iacute;a electiva y en pocos se hace &eacute;nfasis a la cirug&iacute;a de urgencia. M&aacute;s a&uacute;n, en este &uacute;ltimo tipo de cirug&iacute;a, la mayor evidencia se limita a la ortop&eacute;dica y neuroquir&uacute;rgica sin que se conozca el impacto en la cirug&iacute;a abdominal urgente. Por lo tanto, la informaci&oacute;n acerca de la cirug&iacute;a abdominal de urgencia en pacientes con SIDA es nula, pr&aacute;cticamente.</font></p>     <p align="justify"><font face="verdana" size="2">El objetivo de este estudio fue analizar los hallazgos cl&iacute;nicos y la evoluci&oacute;n de los pacientes con SIDA y con dolor abdominal agudo que, en algunos casos, requiri&oacute; una cirug&iacute;a abdominal urgente.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Pacientes y m&eacute;todos</b></font></p>     <p align="justify"><font face="verdana" size="2">Para este estudio descriptivo se incluyeron a todos los pacientes con SIDA y dolor abdominal agudo que fueron evaluados por los servicios de Cirug&iacute;a General durante un periodo de dos a&ntilde;os. Todos los pacientes se encontraban hospitalizados cuando fueron evaluados por primera vez por el cirujano. El seguimiento de los enfermos se realiz&oacute; durante la estancia hospitalaria y, cuando as&iacute; fue, luego del alta m&eacute;dica. La decisi&oacute;n para indicar un tratamiento quir&uacute;rgico fue siempre responsabilidad del cirujano en base a los datos cl&iacute;nicos de abdomen agudo, principalmente.</font></p>     <p align="justify"><font face="verdana" size="2">De las historias cl&iacute;nicas de los enfermos se recolectaron las siguientes variables: demogr&aacute;ficas, principales hallazgos de laboratorio, principales s&iacute;ntomas cl&iacute;nicos, diagn&oacute;stico inicial de los enfermos, hallazgos quir&uacute;rgicos, diagn&oacute;stico final postquir&uacute;rgico, hallazgos histopatol&oacute;gicos y la evoluci&oacute;n, as&iacute; como complicaciones postoperatorias de cada paciente. En los pacientes sometidos a tratamiento quir&uacute;rgico se consider&oacute; una complicaci&oacute;n como temprana cuando &eacute;sta apareci&oacute; antes del quinto d&iacute;a postoperatorio y como complicaci&oacute;n tard&iacute;a a la que se present&oacute; despu&eacute;s de este tiempo.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resultados</b></font></p>     <p align="justify"><font face="verdana" size="2">Durante el periodo de estudio, 232 pacientes con SIDA requirieron 333 hospitalizaciones en nuestros hospitales. De estos &uacute;ltimos, 34 tuvieron como diagn&oacute;stico de ingreso al hospital dolor abdominal agudo el cual requiri&oacute; de una evaluaci&oacute;n quir&uacute;rgica. Fueron 32 hombres y 2 mujeres con una mediana de edad de 32 a&ntilde;os (intervalos 26 a 58 a&ntilde;os). Los s&iacute;ntomas m&aacute;s frecuentes fueron en orden de frecuencia: dolor abdominal (100% de los casos), fiebre (66%), distensi&oacute;n abdominal (54%), n&aacute;usea (45%), v&oacute;mito (45%), diarrea (39%), ictericia (24%), ascitis (12%), hemorragia del tubo digestivo bajo (3%) y presencia de una tumoraci&oacute;n abdominal (3%). A su ingreso, la cuenta de leucocitos totales promedio en el grupo fue de 4 x10<sup>9</sup>/L (margen: 0 a 19.6 x10<sup>9</sup>/L). El promedio de neutr&oacute;filos fue de 2.48 x10<sup>9</sup>/L (margen: 0 a 17.32 x10<sup>9</sup>/L). La cuenta promedio de linfocitos T CD4+ fue de 0.052 x10<sup>9</sup>/L (margen: 0 a 0.336 x10<sup>9</sup>/L).</font></p>     <p align="justify"><font face="verdana" size="2">Luego de la evaluaci&oacute;n por el cirujano se establecieron los diagn&oacute;sticos iniciales que se listan en el <a href="#c1">cuadro I</a>. El diagn&oacute;stico inicial m&aacute;s frecuente fue abdomen agudo (45%). Luego de la evaluaci&oacute;n cl&iacute;nica por el cirujano responsable, en 12 pacientes se consider&oacute; que el dolor abdominal no requer&iacute;a manejo quir&uacute;rgico por lo que recibieron tratamiento m&eacute;dico exclusivamente. Los procedimientos quir&uacute;rgicos realizados en los 22 pacientes restantes se muestran en el <a href="#c2">cuadro II</a>. El diagn&oacute;stico postoperatorio m&aacute;s frecuente fue ile&iacute;tis terminal (25%) (<a href="#c3">Cuadro III</a>). Algunas diferencias generales entre los grupos tratados quir&uacute;rgica y m&eacute;dicamente se muestran en el <a href="/img/revistas/gmm/v141n5/a2c4.jpg" target="_blank">cuadro IV</a>.</font></p>     <p align="center"><font size="2" face="verdana"><a name="c1"></a></font></p>     <p align="center"><font size="2" face="verdana"><img src="/img/revistas/gmm/v141n5/a2c1.jpg"></font></p>     <p align="center"><font face="verdana" size="2"><a name="c2"></a></font></p>     <p align="center"><font face="verdana" size="2"><img src="/img/revistas/gmm/v141n5/a2c2.jpg"></font></p>     <p align="center"><font face="verdana" size="2"><a name="c3"></a></font></p>     <p align="center"><font face="verdana" size="2"><img src="/img/revistas/gmm/v141n5/a2c3.jpg"></font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">En todos los casos sometidos a tratamiento quir&uacute;rgico se practic&oacute; el estudio histopatol&oacute;gico. En los pacientes sin anormalidades macrosc&oacute;picas observadas durante la cirug&iacute;a se tomaron biopsias de h&iacute;gado e &iacute;leon y cuando fue necesario se tomaron biopsias de los ganglios linf&aacute;ticos y se realiz&oacute; cultivo del fluido abdominal. Los hallazgos histopatol&oacute;gicos se muestran en el <a href="#c5">cuadro V</a>. Los m&aacute;s frecuentes fueron ile&iacute;tis (18%), y linfoma maligno (18%). En los casos con colecistitis aguda no se pudo demostrar ning&uacute;n agente infeccioso involucrado.</font></p>     <p align="center"><font face="verdana" size="2"><a name="c5"></a></font></p>     <p align="center"><font face="verdana" size="2"><img src="/img/revistas/gmm/v141n5/a2c5.jpg"></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>Complicaciones</i></font></p>     <p align="justify"><font face="verdana" size="2">Ninguno de los 12 pacientes tratados m&eacute;dicamente tuvo alguna complicaci&oacute;n. Entre los pacientes sometidos a cirug&iacute;a s&oacute;lo se observ&oacute; una complicaci&oacute;n transoperatoria. El diagn&oacute;stico inicial de este enfermo fue colangitis aguda pero durante la cirug&iacute;a se encontr&oacute; un tumor en la segunda porci&oacute;n del duodeno que correspondi&oacute; finalmente a un linfoma. El paciente sufri&oacute; una perforaci&oacute;n duodenal incidental por lo que, adem&aacute;s del procedimiento de reparaci&oacute;n se procedi&oacute; a realizar coledocotom&iacute;a, colocaci&oacute;n de un tubo en T y duodenostom&iacute;a para controlar de la mejor manera posible el gasto de l&iacute;quido duodenal. A partir de este momento su evoluci&oacute;n fue satisfactoria con cierre definitivo de la f&iacute;stula duodenal. El tratamiento del linfoma fue a base de quimioterapia sist&eacute;mica.</font></p>     <p align="justify"><font face="verdana" size="2">Ocho de los 22 pacientes que requirieron tratamiento quir&uacute;rgico presentaron alguna complicaci&oacute;n postquir&uacute;rgica en alg&uacute;n momento de su evoluci&oacute;n (41%). Cinco de ellas fueron complicaciones tempranas y tres tard&iacute;as. Cinco pacientes requirieron seis segundas intervenciones debido a una evoluci&oacute;n desfavorable o a la sospecha de una complicaci&oacute;n mayor que se estableci&oacute; en base a la mala evoluci&oacute;n postquir&uacute;rgica del enfermo (<a href="/img/revistas/gmm/v141n5/a2c6.jpg" target="_blank">Cuadro VI</a>).</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>Complicaciones tempranas de la cirug&iacute;a abdominal</i></font></p>     <p align="justify"><font face="verdana" size="2">Un paciente tuvo una perforaci&oacute;n del colon. Durante su segunda cirug&iacute;a se encontr&oacute; adem&aacute;s una perforaci&oacute;n del &iacute;leon terminal y se practic&oacute; una resecci&oacute;n intestinal con ileostom&iacute;a. Su evoluci&oacute;n fue satisfactoria y se reconect&oacute; dos meses despu&eacute;s. Otro paciente requiri&oacute; laparotom&iacute;a exploradora debido a distensi&oacute;n abdominal persistente y dolor abdominal agudo inmediatamente despu&eacute;s del primer evento quir&uacute;rgico. Despu&eacute;s de un periodo sin mejor&iacute;a, fue sometido a una segunda laparotom&iacute;a exploradora cinco d&iacute;as luego de la primera cirug&iacute;a sin que se encontraran lesiones macrosc&oacute;picas aparentes. Durante su evoluci&oacute;n, sus condiciones generales empeoraron y se requiri&oacute; una nueva laparotom&iacute;a exploradora por persistencia de dolor abdominal. Aunque no se encontr&oacute; ning&uacute;n hallazgo transoperatorio, el paciente mejor&oacute; dram&aacute;ticamente luego de este tercer procedimiento quir&uacute;rgico. Otro paciente m&aacute;s muri&oacute; dentro de las 24 horas posteriores a la cirug&iacute;a inicial en estado de choque s&eacute;ptico. Durante la cirug&iacute;a se encontr&oacute; abundante material purulento en la cavidad abdominal as&iacute; como un tumor en la regi&oacute;n ileocecal que envolv&iacute;a al ap&eacute;ndice. Se practic&oacute; apendicectom&iacute;a y el informe histopatol&oacute;gico concluy&oacute; la presencia de un linfoma linfoc&iacute;tico de c&eacute;lulas peque&ntilde;as probablemente dependiente del colon ascendente. Otro paciente falleci&oacute; en el periodo postoperatorio debido a sepsis por citomegalovirus (CMV). El &uacute;ltimo paciente complicado tempranamente tuvo un diagn&oacute;stico preoperatorio inicial de apendicitis aguda y durante la cirug&iacute;a se encontr&oacute; adenitis mesent&eacute;rica. En las primeras 48 horas del postoperatorio present&oacute; distensi&oacute;n abdominal persistentemente por lo que fue sometido a una laparotom&iacute;a exploradora en la que no se encontr&oacute; una causa que explicara su cuadro cl&iacute;nico. Su evoluci&oacute;n luego de la segunda cirug&iacute;a no fue adecuada y muri&oacute; cinco d&iacute;as despu&eacute;s de la cirug&iacute;a inicial.</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>Complicaciones tard&iacute;as de la cirug&iacute;a abdominal</i></font></p>     <p align="justify"><font face="verdana" size="2">Un paciente hemof&iacute;lico se present&oacute; con un probable absceso residual luego de 21 d&iacute;as de postoperatorio por apendicitis aguda. Se practic&oacute; laparotom&iacute;a exploradora y se encontr&oacute; un hematoma de 250 mL. Se dren&oacute; &eacute;ste y su evoluci&oacute;n fue satisfactoria. Otro paciente que fue sometido inicialmente a colectom&iacute;a subtotal con ileostom&iacute;a present&oacute; hemorragia activa a trav&eacute;s de la ileostom&iacute;a 31 d&iacute;as despu&eacute;s de la cirug&iacute;a inicial. Este paciente mejor&oacute; con medidas conservadores exclusivamente. El &uacute;ltimo paciente tuvo un absceso residual tres meses despu&eacute;s de una esplenectom&iacute;a por lo que se le practic&oacute; drenaje con aguja guiada por tomograf&iacute;a computada. Aunque se obtuvo cierta mejor&iacute;a, la sintomatolog&iacute;a persisti&oacute; y ya que una nueva tomograf&iacute;a axial computada de abdomen demostr&oacute; mayor colecci&oacute;n en el cuadrante superior izquierdo se decidi&oacute; practicar laparotom&iacute;a exploradora. Se encontr&oacute; un absceso grande que fue evacuado. La evoluci&oacute;n de este enfermo fue satisfactoria.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>Supervivencia</i></font></p>     <p align="justify"><font face="verdana" size="2">Ocurrieron tres muertes durante los primeros 30 d&iacute;as luego de la cirug&iacute;a inicial (9%). La mediana de supervivencia para todo el grupo de pacientes fue de 6 meses (margen: 1 a 20 meses). La supervivencia en el grupo de pacientes que fueron tratados m&eacute;dicamente fue cuatro meses (margen: 1 a 17 meses), en comparaci&oacute;n con la mediana de supervivencia del grupo tratado quir&uacute;rgicamente en el que fue de 6.5 meses (margen: 1 a 20 meses).</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>Comentario</i></font></p>     <p align="justify"><font face="verdana" size="2">El tratamiento integral del SIDA incluye el uso de medicamentos antirretrovirales y otras terapias farmacol&oacute;gicas para las m&uacute;ltiples complicaciones de esta enfermedad. Sin embargo, durante su evoluci&oacute;n, los pacientes con SIDA pueden requerir de otras estrategias terap&eacute;uticas, especialmente, en el caso del dolor abdominal agudo. En este an&aacute;lisis de un a&ntilde;o, 10% de los pacientes hospitalizados en nuestras unidades requirieron una evaluaci&oacute;n quir&uacute;rgica. De acuerdo con la epidemiolog&iacute;a del SIDA en nuestro pa&iacute;s, la mayor&iacute;a de los enfermos de este estudio fueron homosexuales j&oacute;venes. Nuestra serie es muy similar a las de trabajos previos en cuanto a caracter&iacute;sticas generales, sintomatolog&iacute;a y diagn&oacute;sticos iniciales y postoperatorios.<sup>1-9,13-17</sup> El dolor abdominal agudo fue la causa m&aacute;s frecuente de evaluaci&oacute;n quir&uacute;rgica. El dolor abdominal agudo es una causa de hospitalizaci&oacute;n urgente, sin embargo, la cirug&iacute;a no es siempre necesaria. En este estudio, casi un tercio de los pacientes evaluados por el cirujano fueron tratados apropiadamente con tratamiento m&eacute;dico.</font></p>     <p align="justify"><font face="verdana" size="2">Despu&eacute;s de la cirug&iacute;a inicial, siempre se estableci&oacute; un diagn&oacute;stico anatomopatol&oacute;gico espec&iacute;fico siendo las infecciones y el linfoma los diagn&oacute;sticos m&aacute;s frecuentes. La etiolog&iacute;a del dolor abdominal agudo en los pacientes con SIDA ha cambiado con el tiempo. Los trabajos publicados en la era anterior a la terapia antirretroviral altamente efectiva describieron alta incidencia de candidiasis esof&aacute;gica, parasitosis intestinales, pancreatitis, enfermedades anorrectales, as&iacute; como neoplasias como el linfoma y el Sarcoma de Kaposi. En la actualidad, las infecciones por CMV y micobacterias son m&aacute;s frecuentes.<sup>13</sup> Adem&aacute;s, la etiolog&iacute;a var&iacute;a de acuerdo al &aacute;rea geogr&aacute;fica. Por ejemplo, la tuberculosis es m&aacute;s frecuente en los pa&iacute;ses en desarrollo que en otras &aacute;reas en las cuales la infecci&oacute;n por CMV es m&aacute;s frecuente. Otras causas menos frecuentes de patolog&iacute;a abdominal son el sarcoma de Kaposi y la infecci&oacute;n por <i>Pneumocystis </i>carinii.<sup>14&#150;</sup><sup>16</sup> Aunque la etiolog&iacute;a de los cuadros apendiculares, de colecistitis aguda o de enfermedad &aacute;cido p&eacute;ptica complicada puede ser similar en pacientes con SIDA y en la poblaci&oacute;n general, quiz&aacute; estas entidades tengan patrones etiol&oacute;gicos espec&iacute;ficos y caracter&iacute;sticos del deficiente estado inmunol&oacute;gico del SIDA.<sup>17</sup></font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">Como se esperar&iacute;a por el patr&oacute;n epidemiol&oacute;gico en M&eacute;xico, la tuberculosis fue frecuente en nuestra serie por lo que esta posibilidad siempre debe estar presente entre los diagn&oacute;sticos iniciales del paciente con SIDA y dolor abdominal.<sup>18,</sup><sup>19</sup> Los diagn&oacute;sticos diferenciales m&aacute;s frecuentes para tuberculosis intestinal son sarcoma de Kaposi, linfoma maligno y peritonitis por <i>Pneumocystis carinii.</i><sup>20&#150;</sup><sup>23</sup></font></p>     <p align="justify"><font face="verdana" size="2">En algunos de los pacientes tratados quir&uacute;rgicamente, a pesar de las alteraciones macrosc&oacute;picas graves, se encontraron hallazgos anatomopatol&oacute;gicos inespec&iacute;ficos casi siempre con gran respuesta inflamatoria y en dos casos s&oacute;lo complicaciones isqu&eacute;micas. Es probable que estos casos sin diagn&oacute;stico hayan sido secundarios a procesos infecciosos, principal causa de complicaciones generales de los pacientes de nuestros hospitales. En este trabajo, el &iacute;leon y la ves&iacute;cula biliar fueron los &oacute;rganos m&aacute;s afectados (&oacute;rganos en los que se asientan frecuentemente procesos infecciosos). Debido a la alta frecuencia de ile&iacute;tis terminal, esta patolog&iacute;a debe considerarse siempre como diagn&oacute;stico diferencial de la apendicitis aguda. Por otra parte, los eventos agudos del tracto biliar representan otro reto en la evaluaci&oacute;n inicial. En caso de dolor localizado al cuadrante superior derecho debe descartarse patolog&iacute;a biliar, porque las alteraciones en esta regi&oacute;n son m&aacute;s frecuentes que en la poblaci&oacute;n general.<sup>24</sup> La ultrasonograf&iacute;a o la tomograf&iacute;a computada pueden ser &uacute;tiles para el diagn&oacute;stico.<sup>25,</sup><sup>26</sup> La colecistectom&iacute;a laparosc&oacute;pica tiene morbilidad y mortalidad bajas, adem&aacute;s disminuye el riesgo de accidentes para el equipo quir&uacute;rgico. Sin embargo, no se conoce el riesgo de infecci&oacute;n en caso de inhalaci&oacute;n de gas contaminado.<sup>27,</sup><sup>28</sup> Otros diagn&oacute;sticos frecuentes y concernientes a la patolog&iacute;a biliar en el paciente con SIDA son colecistitis aliti&aacute;sica, infecci&oacute;n por CMV, criptosporidiasis vesicular, colangitis esclerosante y las estenosis benignas del conducto biliar y del &aacute;mpula de Vater.<sup>29&#150;</sup><sup>32</sup></font></p>     <p align="justify"><font face="verdana" size="2">La incidencia de apendicitis aguda puede ser de hasta 0.5% en pacientes con SIDA.<sup>33</sup> El dolor abdominal localizado a la fosa il&iacute;aca derecha debe alertar al cirujano acerca de esta posibilidad de acuerdo a los datos publicados acerca de apendicitis aguda secundaria a CMV.<sup>34&#150;</sup><sup>37</sup> En caso de sospecha de apendicitis aguda, es factible realizar laparotom&iacute;a exploradora o laparoscop&iacute;a diagn&oacute;stica.<sup>38</sup></font></p>     <p align="justify"><font face="verdana" size="2">Existen otras causas de dolor abdominal que requieren alguna consideraci&oacute;n. Aunque no tuvimos ning&uacute;n caso de pancreatitis en este estudio, esta es otra causa de enfermedad abdominal aguda que en raras ocasiones amerita de tratamiento quir&uacute;rgico. La pancreatitis aguda infecciosa se asocia con infecci&oacute;n por CMV en 66% de los casos. La pancreatitis secundaria a medicamentos se ha asociado al uso de Trimetoprim&#150;Sulfametoxazol, Didanosida, Zalcitabina y Pentamidina y a la Lamivudina en ni&ntilde;os.<sup>39</sup> Por otra parte, el CMV se asocia frecuentemente con &uacute;lceras esof&aacute;gicas, g&aacute;stricas y duodenales.<sup>40,</sup><sup>41</sup> Una causa frecuente de laparotom&iacute;a exploradora en pacientes con SIDA es una &uacute;lcera ileoc&oacute;lica perforada o hemorr&aacute;gica secundaria a este agente. Sin embargo, el tratamiento quir&uacute;rgico en estos casos es controversial pues se sabe muy bien que la posibilidad de &eacute;xito de una anastomosis intestinal es extremadamente baja mientras que el riesgo de fistulizaci&oacute;n de la anastomosis es muy alta.<sup>42&#150;</sup><sup>45</sup></font></p>     <p align="justify"><font face="verdana" size="2">En este estudio, 41% de los pacientes quir&uacute;rgicos tuvieron alguna complicaci&oacute;n siendo la mayor&iacute;a inmediatas. Aunque estas complicaciones pusieron en peligro la vida del enfermo, no todas fueron letales. Cuando se requiri&oacute; de una reintervenci&oacute;n se tuvieron diversos grados de &eacute;xito. Las complicaciones m&aacute;s frecuentes fueron infecciosas. Debido a lo anterior, parece necesario que una vez operado, el paciente con SIDA deba ser siempre monitoreado como un paciente grave independientemente de su evoluci&oacute;n postquir&uacute;rgica. En algunos trabajos se ha demostrado que el uso de factor estimulante de crecimiento de colonias de granulocitos podr&iacute;a mejorar la supervivencia del paciente con SIDA e infecci&oacute;n grave por lo que es factible suponer que podr&iacute;a ser &uacute;til en el paciente con SIDA sometido a cirug&iacute;a.<sup>46</sup></font></p>     <p align="justify"><font face="verdana" size="2">En este an&aacute;lisis la mortalidad fue menor que la descrita previamente. Por ejemplo, la mortalidad temprana en pacientes con complicaciones postoperatorias tempranas fue de s&oacute;lo 9%. Un hallazgo importante en este estudio es que la supervivencia entre los pacientes intervenidos y no intervenidos fue similar.</font></p>     <p align="justify"><font face="verdana" size="2">En conclusi&oacute;n, el m&eacute;dico debe estar alerta acerca del gran espectro de posibilidades diagn&oacute;sticas quir&uacute;rgicas que afectan al enfermo con SIDA y dolor abdominal agudo siendo el criterio para intervenir a un enfermo siempre cl&iacute;nico. Demorar la decisi&oacute;n de intervenir a uno de estos enfermos puede ser letal. En este estudio se demuestra que la supervivencia en el grupo de pacientes intervenidos quir&uacute;rgicamente fue similar a la del grupo tratado m&eacute;dicamente, por lo que se considera que la cirug&iacute;a abdominal en los pacientes con SIDA debe ser realizada siempre tan pronto como sea posible porque la cirug&iacute;a misma no ejerce un efecto negativo sobre la supervivencia del paciente. Indiscutiblemente, la cirug&iacute;a tiene un papel importante en el tratamiento integral del paciente con SIDA.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Referencias</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">1.<b> Potter DA, Danforth DN, Macher AM, Longo DL, Stewart L, Masur H. </b>Evaluation of abdominal pain in the AIDS patient. Ann Surg 1984; 199:332&#150;339.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=3866506&pid=S0016-3813200500050000200001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">2.<b> Barone J, Gingold B, Nealon T, Arvantis   M. </b>Abdominal pain in patients with acquired immune deficiency syndrome. 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Scand J Gastroenterol 1998; 33:212&#150;217.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=3866511&pid=S0016-3813200500050000200006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">7.<b> Ferguson C. </b>Surgical complications of human immunodeficiency virus infection. Am Surg 1988;54:4&#150;9.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=3866512&pid=S0016-3813200500050000200007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">8.<b> Nugent P, O'Conell TX. </b>The surgeons role in treating  acquired          immunodeficiency syndrome. Arch Surg 1986; 121:1117&#150;1120.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=3866513&pid=S0016-3813200500050000200008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">9.<b> Robinson G, Wilson SE, Williams RA. </b>Surgery in patients with acquired immunodeficiency syndrome.    Arch Surg 1987; 122:170&#150;175.&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp;</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=3866514&pid=S0016-3813200500050000200009&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">10. Binderow SR, Cavallo RJ, Freed J. Laboratory parameters as predictors of operative outcome after major abdominal surgery in AIDS and HIV&#150;         33. infected patients. Am Surg 1993; 59:754&#150;757.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=3866515&pid=S0016-3813200500050000200010&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">11.<b> Emparan C, Iturburu IM, Ortiz J, Mendez JJ. </b>Infective complications after abdominal surgery in patients infected with human immunodeficiency virus:          Role of CD4+ lymphocytes in prognosis. 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