<?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>1405-9940</journal-id>
<journal-title><![CDATA[Archivos de cardiología de México]]></journal-title>
<abbrev-journal-title><![CDATA[Arch. Cardiol. Méx.]]></abbrev-journal-title>
<issn>1405-9940</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Cardiología Ignacio Chávez]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-99402014000400009</article-id>
<article-id pub-id-type="doi">10.1016/j.acmx.2014.03.002</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Rehabilitación cardiaca luego de la cirugía de revascularización miocárdica]]></article-title>
<article-title xml:lang="en"><![CDATA[Cardiac rehabilitation after coronary artery bypass surgery]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Dayan]]></surname>
<given-names><![CDATA[Victor]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ricca]]></surname>
<given-names><![CDATA[Roberto]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Universidad de la República  ]]></institution>
<addr-line><![CDATA[Montevideo ]]></addr-line>
<country>Uruguay</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2014</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2014</year>
</pub-date>
<volume>84</volume>
<numero>4</numero>
<fpage>286</fpage>
<lpage>292</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-99402014000400009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-99402014000400009&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-99402014000400009&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[La cardiopatía isquémica representa la principal causa de muerte a nivel mundial con un incremento en la incidencia en las poblaciones más jóvenes. Hoy en día existen estrategias de revascularización para el manejo de la isquemia aguda y/o crónica del miocardio. Estas son del tipo percutáneas así como también quirúrgicas. Aunque logremos mejorar la vascularización miocárdica mediante estos métodos, el principal determinante para mantener la permeabilidad coronaria y de los bypass confeccionados es una adecuada prevención secundaria. En esto se centran las propuestas de rehabilitación cardiaca a nivel mundial. Aunque se ha publicado mucho sobre el rol de la rehabilitación cardiaca luego de la revascularización percutánea, existen pocos trabajos capaces de sintetizar la situación actual del la rehabilitación cardiaca en el paciente que recibe cirugía de revascularización coronaria. El objetivo del presente trabajo es revisar el efecto de la rehabilitación en el retorno laboral, supervivencia, capacidad funcional, depresión y ansiedad, así como comparar la rehabilitación centralizada vs. domiciliaria en esta población de pacientes.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Ischemic heart disease is the leading cause of death worldwide with an increase in the incidence in younger populations. Today revascularization strategies are capable of alleviating acute ischemia and/or chronic ischemia. These can be performed percutaneously or through surgery. Even if we improve myocardial perfusion by these methods, the main determinant in maintaining patency of coronary arteries and bypass is a correctly instituted secondary prevention. This is the main focus of cardiac rehabilitation proposals. Although much has been published about the role of cardiac rehabilitation after percutaneous revascularization, there is little work able to synthesize the current state of cardiac rehabilitation in patients undergoing coronary artery bypass surgery. The aim of this paper is to review the effect of rehabilitation in the return to work, survival, functional capacity, depression and anxiety, as well as compare centralized vs. home rehabilitation in this patient population.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Rehabilitación]]></kwd>
<kwd lng="es"><![CDATA[Cardiopatía isquémica]]></kwd>
<kwd lng="es"><![CDATA[Cirugía de revascularización miocárdica]]></kwd>
<kwd lng="es"><![CDATA[Uruguay]]></kwd>
<kwd lng="en"><![CDATA[Rehabilitation]]></kwd>
<kwd lng="en"><![CDATA[Ischemic heart disease]]></kwd>
<kwd lng="en"><![CDATA[Coronary artery bypass surgery]]></kwd>
<kwd lng="en"><![CDATA[Uruguay]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[  	    <p align="justify"><font face="verdana" size="4">Art&iacute;culo de revisi&oacute;n</font></p>      <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="4"><b>Rehabilitaci&oacute;n cardiaca luego de la cirug&iacute;a de revascularizaci&oacute;n mioc&aacute;rdica</b></font></p>      <p align="center"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="3"><b>Cardiac rehabilitation after coronary artery bypass surgery</b></font></p>      <p align="center"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="center"><font face="verdana" size="2"><b>Victor Dayan<sup>a,</sup>*, Roberto Ricca<sup>b</sup></b></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><sup><i>a</i></sup> <i>C&aacute;tedra de Cirug&iacute;a Cardiaca, Centro Cardiovascular Universitario, Hospital de Cl&iacute;nicas, Universidad de la Rep&uacute;blica, Montevideo, Uruguay.</i></font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><i><sup>b</sup> C&aacute;tedra de Cardiolog&iacute;a, Centro Cardiovascular Universitario, Hospital de Cl&iacute;nicas, Universidad de la Rep&uacute;blica, Montevideo, Uruguay.</i></font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>* Autor para correspondencia:</b>    <br> 	26 de Marzo 3459/602, Montevideo, Uruguay.    <br> 	Tel&eacute;fono: &#43;59826235559.    <br> 	Correo electr&oacute;nico: <a href="mailto:victor%20dayan@hotmail.com">victor dayan@hotmail.com</a> (V. Dayan).</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2">Recibido el 12 de junio de 2013    <br> 	Aceptado el 12 de marzo de 2014</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>  	    <p align="justify"><font face="verdana" size="2">La cardiopat&iacute;a isqu&eacute;mica representa la principal causa de muerte a nivel mundial con un incremento en la incidencia en las poblaciones m&aacute;s j&oacute;venes. Hoy en d&iacute;a existen estrategias de revascularizaci&oacute;n para el manejo de la isquemia aguda y/o cr&oacute;nica del miocardio. Estas son del tipo percut&aacute;neas as&iacute; como tambi&eacute;n quir&uacute;rgicas. Aunque logremos mejorar la vascularizaci&oacute;n mioc&aacute;rdica mediante estos m&eacute;todos, el principal determinante para mantener la permeabilidad coronaria y de los bypass confeccionados es una adecuada prevenci&oacute;n secundaria. En esto se centran las propuestas de rehabilitaci&oacute;n cardiaca a nivel mundial. Aunque se ha publicado mucho sobre el rol de la rehabilitaci&oacute;n cardiaca luego de la revascularizaci&oacute;n percut&aacute;nea, existen pocos trabajos capaces de sintetizar la situaci&oacute;n actual del la rehabilitaci&oacute;n cardiaca en el paciente que recibe cirug&iacute;a de revascularizaci&oacute;n coronaria. El objetivo del presente trabajo es revisar el efecto de la rehabilitaci&oacute;n en el retorno laboral, supervivencia, capacidad funcional, depresi&oacute;n y ansiedad, as&iacute; como comparar la rehabilitaci&oacute;n centralizada vs. domiciliaria en esta poblaci&oacute;n de pacientes.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Palabras clave:</b> Rehabilitaci&oacute;n; Cardiopat&iacute;a isqu&eacute;mica; Cirug&iacute;a de revascularizaci&oacute;n mioc&aacute;rdica; Uruguay.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Abstract</b></font></p>  	    <p align="justify"><font face="verdana" size="2">Ischemic heart disease is the leading cause of death worldwide with an increase in the incidence in younger populations. Today revascularization strategies are capable of alleviating acute ischemia and/or chronic ischemia. These can be performed percutaneously or through surgery. Even if we improve myocardial perfusion by these methods, the main determinant in maintaining patency of coronary arteries and bypass is a correctly instituted secondary prevention. This is the main focus of cardiac rehabilitation proposals. Although much has been published about the role of cardiac rehabilitation after percutaneous revascularization, there is little work able to synthesize the current state of cardiac rehabilitation in patients undergoing coronary artery bypass surgery. The aim of this paper is to review the effect of rehabilitation in the return to work, survival, functional capacity, depression and anxiety, as well as compare centralized vs. home rehabilitation in this patient population.</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Keywords:</b> Rehabilitation; Ischemic heart disease; Coronary artery bypass surgery; Uruguay.</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 importancia de la rehabilitaci&oacute;n cardiaca (RC) en la enfermedad cardiovascular ha sido se&ntilde;alada desde hace varios siglos. Asclep&iacute;ades de Prusa (124 a.C.&#45;40 a.C.) fue el primero en desarrollar un programa de ejercicios f&iacute;sicos en enfermos cardiacos. En 1772, Heberden, 4 a&ntilde;os despu&eacute;s de describir la angina de pecho, public&oacute; una nota referida a un paciente con s&iacute;ntomas de isquemia mioc&aacute;rdica en la que relataba el efecto beneficioso que ten&iacute;a el esfuerzo de serruchar durante 30 min diarios<sup>1</sup>. Desde entonces los programas de rehabilitaci&oacute;n se han adaptado a la evidencia e individualizado a la enfermedad espec&iacute;fica. En los a&ntilde;os 50 el objetivo era revertir la falta de acondicionamiento f&iacute;sico producido por hospitalizaciones prolongadas y restricciones en la actividad f&iacute;sica. Antes de que se contara con f&aacute;rmacos betabloqueantes y calcioantagonistas, o procedimientos de revascularizaci&oacute;n, el ejercicio f&iacute;sico era la &uacute;nica terap&eacute;utica capaz de atrasar el retorno del angor<sup>2</sup>. Se ha demostrado que en los pacientes con enfermedad coronaria luego de un infarto agudo de miocardio (IAM) o cirug&iacute;a de revascularizaci&oacute;n coronaria (CRC), el ejercicio aer&oacute;bico est&aacute; &iacute;ntimamente relacionado con la supervivencia a largo plazo<sup>3</sup>.</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">En la actualidad los programas de RC se consideran seguros y efectivos y son una recomendaci&oacute;n de clase I en las Sociedades Norteamericana y Europea de Cardiolog&iacute;a<sup>4,5</sup>.</font></p>  	    <p align="justify"><font face="verdana" size="2">Asimismo la indicaci&oacute;n de RC se ha ampliado a individuos asintom&aacute;ticos con riesgo elevado de enfermedad coronaria, insuficiencia cardiaca y arteriopat&iacute;a perif&eacute;rica<sup>6,7</sup>.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Efectos del entrenamiento f&iacute;sico</b></font></p>  	    <p align="justify"><font face="verdana" size="2">El ejercicio aer&oacute;bico y anaer&oacute;bico aumentan el total de ox&iacute;geno consumido con el fin de aportarlo al m&uacute;sculo en ejercicio.</font></p>  	    <p align="justify"><font face="verdana" size="2">La demanda de ox&iacute;geno cardiaca (MVO<sub>2</sub>) puede estimarse por el producto de la frecuencia cardiaca y la presi&oacute;n arterial sist&oacute;lica o doble producto.</font></p>  	    <p align="justify"><font face="verdana" size="2">El efecto primario del entrenamiento f&iacute;sico es el incremento de la capacidad de ejercicio lo que implica un menor MVO<sub>2</sub> frente a cualquier esfuerzo subm&aacute;ximo, por lo tanto se retrasa la aparici&oacute;n de angor. Este efecto se ve reforzado por la mejora de la funci&oacute;n vasodilatadora del endotelio. Los efectos beneficiosos del ejercicio f&iacute;sico se resumen en la <a href="#t1">tabla 1</a><sup>8</sup>.</font></p>  	    <p align="center"><font face="verdana" size="2"><a name="t1"></a></font></p>  	    <p align="center"><font face="verdana" size="2"><img src="/img/revistas/acm/v84n4/a9f1.jpg"></font></p>  	    <p align="center"><font face="verdana" size="2">&nbsp;</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Aspectos moleculares de la rehabilitaci&oacute;n cardiaca sobre el miocardio</b></font></p>  	    <p align="justify"><font face="verdana" size="2">Los efectos del ejercicio f&iacute;sico sobre el coraz&oacute;n incluyen una mayor protecci&oacute;n contra la lesi&oacute;n del fen&oacute;meno de isquemia&#45;reperfusi&oacute;n como resultado de un mayor efecto antioxidante; una mejora en la funci&oacute;n sist&oacute;lica y diast&oacute;lica del ventr&iacute;culo izquierdo, debida a los cambios favorables en el estado neurohomoral y a la activaci&oacute;n de fosfoinositide&#45;3 cinasa (p110&#945;); y las ya mencionadas acciones mediadas por el endotelio que incluyen la vasodilataci&oacute;n en los grandes conductos arteriales y vasos de resistencia, un mejor control miog&eacute;nico y mayor efecto dilatador metab&oacute;lico de los peque&ntilde;os vasos de resistencia<sup>9</sup>.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Rehabilitaci&oacute;n cardiaca</b></font></p>  	    <p align="justify"><font face="verdana" size="2">La Organizaci&oacute;n Mundial de la Salud ha definido la RC como &#171;el proceso en el cual los pacientes, con enfermedad cardiaca en conjunto con un grupo multidisciplinario, son estimulados para adquirir y mantener un estado de salud f&iacute;sico y psicosocial &oacute;ptimo&#187;<sup>10</sup>. Un programa de RC debe incluir aspectos educativos sobre el conocimiento de la enfermedad y los cambios en los h&aacute;bitos de vida: cesaci&oacute;n del tabaquismo, entrenamiento f&iacute;sico, dieta saludable, el manejo del colesterol, componentes psicosociales (manejo del estr&eacute;s, ansiedad y depresi&oacute;n) y valoraci&oacute;n ocupacional<sup>11</sup>.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Rehabilitaci&oacute;n en la enfermedad coronaria</b></font></p>  	    <p align="justify"><font face="verdana" size="2">El efecto de la rehabilitaci&oacute;n cardiaca en pacientes con enfermedad coronaria ha sido extensamente estudiado. Al menos 4 metaan&aacute;lisis examinan el efecto cl&iacute;nico de la RC<sup>12</sup>. Todos concluyen de forma similar dado que incluyen los mismos estudios. Uno de los m&aacute;s recientes informa una reducci&oacute;n del 20&#37; y del 26&#37; en la mortalidad total y cardiaca, respectivamente, en el grupo de pacientes con RC (p &#60; 0.05)<sup>13</sup>. La mayor&iacute;a de los estudios en este metaan&aacute;lisis fueron realizados previamente a la implementaci&oacute;n de estrategias de revascularizaci&oacute;n modernas, por lo cual es posible que muchos individuos en estos estudios tuvieran lesiones coronarias residuales pasibles de revascularizaci&oacute;n.</font></p>  	    <p align="justify"><font face="verdana" size="2">Con base a lo anteriormente expuesto, el objetivo de la presente revisi&oacute;n es evaluar el beneficio de la RC en pacientes que reciben CRC.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Rehabilitaci&oacute;n cardiaca luego de la cirug&iacute;a de revascularizaci&oacute;n coronaria</b></font></p>  	    <p align="justify"><font face="verdana" size="2">La prevenci&oacute;n secundaria y la RC de pacientes que reciben CRC son de gran importancia dado que a los 10 o 12 a&ntilde;os luego de la cirug&iacute;a casi la mitad de los pacientes ha desarrollado un evento cardiaco (muerte cardiovascular, IAM o nueva revascularizaci&oacute;n)<sup>14</sup>, un cuarto a un tercio han muerto<sup>15,16</sup> y entre los sobrevivientes se ha visto que tienen un 40&#37; de los puentes ocluidos<sup>17</sup>. Los primeros estudios (1991) que evaluaron la capacidad funcional y retorno laboral luego de la CRC han demostrado que la cirug&iacute;a tiene un efecto beneficioso significativo en ambos<sup>18</sup>.</font></p>  	    <p align="justify"><font face="verdana" size="2">En un estudio portugu&eacute;s, se compararon pacientes operados a los que se indic&oacute; RC con un grupo control operado que no la recibi&oacute;. Al a&ntilde;o, aquellos que recibieron RC demostraron tener mayor conocimiento de su enfermedad, menor ansiedad y depresi&oacute;n as&iacute; como mayor reintegraci&oacute;n a la actividad laboral. Aunque se evidenci&oacute; mayor capacidad funcional y del doble producto, no se detectaron diferencias en supervivencia ni recurrencia de angor<sup>19</sup>.</font></p>  	    <p align="justify"><font face="verdana" size="2">A pesar de los beneficios de la RC, el apego y cumplimiento de la misma es el tal&oacute;n de Aquiles del programa. En un seguimiento de 267,427 pacientes hospitalizados por IAM o CRC mayores de 65 a&ntilde;os en EE. UU., se evidenci&oacute; que la RC se implement&oacute; en tan solo el 13.9&#37; de los pacientes con IAM y en el 31&#37; de aquellos que reciben CRC<sup>20</sup>. Pacientes ancianos, con mucha comorbilidad y mujeres tuvieron menor probabilidad de recibir RC, mientras que la CRC, mayor nivel de ingreso y nivel sociocultural fueron predictores positivos de cumplimiento de un programa de RC. Eso demuestra que, a diferencia de la concepci&oacute;n popular de que el paciente que recibe cirug&iacute;a es m&aacute;s fr&aacute;gil y por lo tanto se pone en duda su indicaci&oacute;n de RC, las cifras norteamericanas demuestran lo contrario. En otro estudio se demostr&oacute; que el apoyo social no es tan importante como predictor del apego a la RC, sino que influyen m&aacute;s otras variables como son sexo, estado socioecon&oacute;mico y comorbilidad<sup>21</sup>. Estos estudios jerarquizan la poblaci&oacute;n vulnerable de no recibir RC y, por tanto, sobre la cual se deber&aacute; incrementar los recursos.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Mortalidad, nueva revascularizaci&oacute;n, reingreso (&#191;o rehospitalizaci&oacute;n o reingreso hospitalario&#63;)</b></font></p>  	    <p align="justify"><font face="verdana" size="2">Perk et al., en un estudio de cohorte comparan la evoluci&oacute;n de un grupo de pacientes que reciben RC frente a un grupo control. A corto plazo, han demostrado mayor abandono del h&aacute;bito tab&aacute;quico, menores cifras tensionales, mayor actividad f&iacute;sica y menor uso de ansiol&iacute;ticos en el grupo con RC<sup>22</sup>. A largo plazo se evidenci&oacute; un menor n&uacute;mero de pacientes con eventos cardiacos y readmisiones en aquellos que recibieron RC. Sin embargo no hubo diferencias en cuanto a supervivencia, mortalidad de causa cardiaca ni nuevo procedimiento de revascularizaci&oacute;n<sup>23</sup>.</font></p>  	    <p align="justify"><font face="verdana" size="2">En otro estudio aleatorizado, se evalu&oacute;: rehospitalizaci&oacute;n, actividad sexual y dolor luego de operados en pacientes con RC en ambiente hospitalario y aquellos sin RC. No se encontraron diferencias entre ambos grupos<sup>24</sup>.</font></p>  	    <p align="justify"><font face="verdana" size="2">En el estudio de Hansen et al., tras 2 a&ntilde;os de seguimiento, un programa de RC disminuy&oacute; la mortalidad tanto en pacientes que reciben CRC como angioplastia. Este efecto fue significativamente mayor en los primeros. Se plantea que esto se deba a una mejor adhesi&oacute;n al tratamiento y a los cambios en el estilo de vida de los operados y a la percepci&oacute;n por parte de los pacientes que recibieron angioplastia de tener una enfermedad &#171;menos grave&#187;<sup>25</sup>.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Retorno laboral</b></font></p>  	    <p align="justify"><font face="verdana" size="2">El retorno laboral es descrito como un indicador principal en la restauraci&oacute;n de la capacidad funcional as&iacute; como tambi&eacute;n en el bienestar del paciente luego de la CRC<sup>26</sup>. Sin embargo, es un par&aacute;metro complejo y que est&aacute; influido no solo por el procedimiento de revascularizaci&oacute;n sino tambi&eacute;n por condiciones sociales, econ&oacute;micas y culturales. Su importancia no radica &uacute;nicamente en el paciente y su familia, sino tambi&eacute;n en la econom&iacute;a sanitaria dado que el costo atribuido a la CRC es mitigado parcialmente por el ingreso generado en el paciente que retorna a su actividad laboral<sup>27</sup>. Debe tenerse en cuenta, sin embargo, que existen varios trabajos que no demuestran relaci&oacute;n entre la capacidad funcional luego de operado y el retorno laboral<sup>28,29</sup>. Los resultados de la RC tras CRC han sido variados.</font></p>  	    <p align="justify"><font face="verdana" size="2">Un estudio israel&iacute; de cohorte con un grupo control igualado en factores de riesgo con el grupo estudio, encontr&oacute; un mayor retorno a la actividad laboral en aquellos pacientes que recibieron RC<sup>30</sup>. Robitaille et al., demuestran mayor retorno laboral luego de la CRC y RC en comparaci&oacute;n con la situaci&oacute;n laboral previa<sup>31</sup>. No sabemos si el beneficio es por la RC o CRC dado que no incluyen un grupo control. Sin embargo, un grupo finland&eacute;s<sup>32</sup>, en 1994, aleatoriz&oacute; a pacientes operados a RC y evalu&oacute; el retorno laboral al a&ntilde;o. No se encontraron diferencias significativas entre aquellos en RC y los que no lo estaban, aunque al analizar por separado a los pacientes menores de 55 a&ntilde;os la reincorporaci&oacute;n laboral es significativamente mayor con RC. Otro grupo finland&eacute;s aleatoriz&oacute; aproximadamente a 200 pacientes a ambas estrategias terap&eacute;uticas. A los 5 a&ntilde;os, no encontraron diferencias en la capacidad funcional. A los 3 a&ntilde;os, aquellos que recibieron RC presentaban mayor retorno laboral. Esta diferencia desaparece a los 5 a&ntilde;os de seguimiento<sup>33</sup>. Esto sugiere que la RC podr&iacute;a acelerar el retorno a la actividad laboral luego de la CRC sin mejorar la mortalidad ni la capacidad funcional. Esto queda evidente en un estudio de cohorte publicado en 1996, en el que se compar&oacute; el retorno laboral de un grupo de pacientes con angor estable que reciben cirug&iacute;a con otro grupo similar en el que se indic&oacute; tratamiento m&eacute;dico. No se indic&oacute; RC en ninguno de los grupos. Se demostr&oacute; mayor retorno laboral a los 6 meses en el grupo con tratamiento quir&uacute;rgico que en la evoluci&oacute;n se igual&oacute;<sup>34</sup>. Se jerarquiza nuevamente el gran efecto que de por s&iacute; tiene la CRC en el retorno laboral como para que pueda evidenciarse una diferencia significativa al agregar otro tratamiento. Esto qued&oacute; demostrado en 1979 cuando se evidenci&oacute; un retorno laboral del 90&#37; de los pacientes durante el seguimiento luego de CRC<sup>35</sup>.</font></p>  	    <p align="justify"><font face="verdana" size="2">Aunque el an&aacute;lisis en bruto del efecto de la RC en el retorno laboral luego de la CRC no le da gran m&eacute;rito, al evaluar subgrupos de pacientes, se destaca su papel beneficioso. Boulay et al. han demostrado que el efecto en el retorno laboral por la RC es mayor en un subgrupo de pacientes (aquellos con una duraci&oacute;n superior a 3 meses de desempleo as&iacute; como tambi&eacute;n aquellos en los que hay un requerimiento f&iacute;sico importante) y que, por lo tanto, los programas de RC as&iacute; como sociales deber&iacute;an enfocarse en estos pacientes<sup>36</sup>. Otros trabajos sostienen la misma conclusi&oacute;n y jerarquizan la dificultad en el retorno laboral en aquellos pacientes con una ocupaci&oacute;n que requiera alta demanda f&iacute;sica<sup>37</sup>, mayor edad<sup>30</sup> y mujeres<sup>38</sup>. La preparaci&oacute;n psicol&oacute;gica del paciente y familiar as&iacute; como la actitud del m&eacute;dico son factores importantes a la hora del retorno laboral seg&uacute;n otros autores<sup>28</sup>. La complejidad de la ocupaci&oacute;n del paciente en su retorno laboral as&iacute; como la importancia que tiene en su bienestar econ&oacute;mico pondera el rol multidisciplinario con medicina ocupacional en el programa de RC.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Capacidad funcional</b></font></p>  	    <p align="justify"><font face="verdana" size="2">Se ha demostrado que la RC mejora la capacidad funcional evidenciada por el doble producto y consumo de O<sub>2</sub>. Aunque la misma aumenta luego de la CRC, la RC no genera un aumento significativo por encima del de los que no la reciben<sup>39</sup>. En un estudio finland&eacute;s, se aleatorizaron pacientes a RC y tratamiento est&aacute;ndar luego de la CRC<sup>40</sup>. En ambos grupos se describe una mejor&iacute;a en la capacidad funcional en bicicleta en comparaci&oacute;n con el preoperatorio. Dicha mejor&iacute;a es significativamente mayor en aquellos que reciben RC tanto a los 6 como a los 12 meses de la cirug&iacute;a.</font></p>  	    <p align="justify"><font face="verdana" size="2">La recuperaci&oacute;n de la frecuencia cardiaca inmediatamente luego del ejercicio es considerada como un predictor de mortalidad global<sup>41</sup>. Eso implica que aquellos pacientes con recuperaci&oacute;n m&aacute;s r&aacute;pida al minuto, luego del ejercicio, tienen mayor supervivencia. El entrenamiento f&iacute;sico ha demostrado aumentar el tono parasimp&aacute;tico, el cual est&aacute; asociado a una reducci&oacute;n en el riesgo de muerte por evento cardiaco<sup>42</sup>. En un intento por demostrar el efecto de la RC en los pacientes operados, Tsai et al.<sup>43</sup> aleatorizaron a pacientes a RC en un ambiente hospitalario y evaluaron la respuesta cronotr&oacute;pica a los 3 meses. Encontraron menor frecuencia cardiaca basal as&iacute; como tambi&eacute;n mayor recuperaci&oacute;n en la frecuencia cardiaca en aquellos asociados a RC. Sin embargo, no pudieron asociar la frecuencia cardiaca a la mejor&iacute;a funcional o mortalidad. Quiz&aacute;s debido al seguimiento a corto plazo.</font></p>  	    <p align="justify"><font face="verdana" size="2">El beneficio de la RC queda evidente tambi&eacute;n en pacientes que reciben trasplante cardiaco, demostr&aacute;ndose una mejor&iacute;a significativa en la capacidad funcional con respecto a valores basales que llega a ser mayor que en pacientes coronarios<sup>44</sup>. Sin embargo, este estudio, no cuenta con un grupo control por lo cual no sabemos cu&aacute;nto de la mejor&iacute;a es por la cirug&iacute;a y cuanto por la RC en s&iacute;. Esta distinci&oacute;n entre el beneficio aportado por la CRC y el adicional por la RC queda tambi&eacute;n evidenciado por la evaluaci&oacute;n de 940 pacientes operados del estado de Washington en los cuales no fue posible demostrar una mejor&iacute;a significativa aportada por la RC en cuanto a la calidad de vida<sup>45</sup>. Dubach et al., en un ensayo cl&iacute;nico aleatorizado con dise&ntilde;o de crossover, demostraron que la mejor&iacute;a en la capacidad funcional era similar en los pacientes independientemente de que realicen RC o no<sup>46</sup>. Hay que aclarar que dicho estudio, aunque muy valioso por su dise&ntilde;o, se llev&oacute; a cabo con el objetivo de valorar RC residencial a corto plazo y no eval&uacute;a otros indicadores como retorno laboral, calidad de vida y reingreso. Otro trabajo m&aacute;s reciente demostr&oacute; mayor capacidad funcional, medida en tiempo de caminata, as&iacute; como valores de presi&oacute;n arterial en pacientes aleatorizados a RC<sup>47</sup>. Tales resultados divergentes, entre los estudios publicados, demuestra la heterogeneidad en los programas de rehabilitaci&oacute;n as&iacute; como en los par&aacute;metros utilizados como medida del &eacute;xito funcional.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Pacientes a&ntilde;osos</b></font></p>  	    <p align="justify"><font face="verdana" size="2">Los programas de RC han demostrado tener efectos beneficiosos tambi&eacute;n en pacientes a&ntilde;osos luego de la CRC. Se ha visto que mejoran la fuerza de los miembros inferiores as&iacute; como la marcha a los 6 meses de la cirug&iacute;a<sup>48</sup>. Ya se mencion&oacute; que estos pacientes han demostrado tener menor reincorporaci&oacute;n a la actividad laboral, a pesar de tener capacidad funcional similar a la de pacientes m&aacute;s j&oacute;venes luego de operados<sup>29</sup>. Esto implica que la edad en s&iacute; es un factor determinante en el retorno laboral y que deber&iacute;an investigarse variables asociadas a la edad que pudieran estar representando un factor confundidor y por lo tanto ser&iacute;an objetivo de programas de RC.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Rehabilitaci&oacute;n cardiaca centralizada frente a domiciliaria</b></font></p>  	    <p align="justify"><font face="verdana" size="2">A pesar del beneficio evidente de la RC, la participaci&oacute;n es sub&oacute;ptima. La principal raz&oacute;n que dan los pacientes para no participar en dicha actividad es el transporte hasta el centro de rehabilitaci&oacute;n, horarios y compromisos laborales<sup>49</sup>. En respuesta a dicho obst&aacute;culo, se crean programas dom&eacute;sticos de RC. En una revisi&oacute;n reciente que compara el efecto de la RC centralizada con la dom&eacute;stica, se incluyeron 12 trabajos con un total de 1,938 pacientes, la mayor&iacute;a de ellos de bajo riesgo luego de IAM o CRC. Se vio que no exist&iacute;a diferencia en cuanto a mortalidad, niveles de factores de riesgo en la evoluci&oacute;n as&iacute; como en el gasto p&uacute;blico. La &uacute;nica diferencia se centr&oacute; en el nivel de adherencia al tratamiento, el cual fue mayor en aquellos con RC dom&eacute;stico<sup>50</sup>. Es importante destacar que este resultado es v&aacute;lido para pacientes de bajo riesgo luego del evento. Esto sugiere y alienta al desarrollo de manuales de RC con la finalidad de llevar la misma al domicilio del paciente. En otro trabajo, en los que se compara la RC centralizada con la domiciliaria y la no RC, la respuesta al ejercicio medida por el restablecimiento de la frecuencia cardiaca luego del mismo fue similar entre aquellos aleatorizados a un programa centralizado y aquellos con RC domiciliaria<sup>51</sup>. En un ensayo cl&iacute;nico en curso en Israel, se eval&uacute;a un protocolo de seguimiento de pacientes operados mediante llamada telef&oacute;nica y educaci&oacute;n al alta con el objetivo de incrementar el apego al programa de RC<sup>52</sup>.</font></p>  	    <p align="justify"><font face="verdana" size="2">En un estudio reciente, se aleatorizaron pacientes con RC domiciliaria y hospitalaria. Se evaluaron mediante consumo pico de O<sub>2</sub> luego del ejercicio y subjetivamente mediante cuestionario de calidad de vida. No se encontraron diferencias en ambos par&aacute;metros entre los 2 grupos<sup>53</sup>.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Rehabilitaci&oacute;n cardiaca en la ansiedad y depresi&oacute;n luego de la cirug&iacute;a de revascularizaci&oacute;n coronaria</b></font></p>  	    <p align="justify"><font face="verdana" size="2">La CRC se asocia a una importante ansiedad y depresi&oacute;n en la convalecencia. Los pacientes con mayor ansiedad o depresi&oacute;n en los &iacute;ndices de evaluaci&oacute;n tienen mayor riesgo de rehospitalizaci&oacute;n a los 6 meses luego de la CRC<sup>54</sup>. Se ha subrayado la inclusi&oacute;n de estrategias destinadas a lidiar con la misma como parte de los programas de RC<sup>55</sup>. Existen trabajos que han demostrado que la RC se asocia a menor ansiedad y depresi&oacute;n en la evoluci&oacute;n<sup>14</sup>. En un estudio aleatorizado iran&iacute; se concluy&oacute; que la RC disminuye la depresi&oacute;n luego de la CRC pero no el nivel de ansiedad a los 2 meses despu&eacute;s de la misma<sup>56</sup>. Otros trabajos, con seguimiento m&aacute;s prolongado, han demostrado que el efecto beneficioso de la RC es a corto plazo, las diferencias en cuanto a &iacute;ndice de depresi&oacute;n y ansiedad desaparecen entre el a&ntilde;o luego de operados y la situaci&oacute;n preoperatoria<sup>57</sup>.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2"><b>Conclusiones</b></font></p>  	    <p align="justify"><font face="verdana" size="2">La mayor evidencia, hasta la fecha, del beneficio de la RC se centra en par&aacute;metros como: factores de riesgo, capacidad funcional, retorno laboral temprano, mayor impacto en personas j&oacute;venes y sobre el estado psicol&oacute;gico. En cuanto a la disminuci&oacute;n de la mortalidad y la mejor&iacute;a de la capacidad funcional, la evidencia es contradictoria.</font></p>  	    <p align="justify"><font face="verdana" size="2">Estos hallazgos contradictorios se deben en parte a la diversidad de los programas de RC as&iacute; como de los par&aacute;metros utilizados para su evaluaci&oacute;n. Esto hace que la comparaci&oacute;n entre los estudios sea limitada.</font></p>  	    <p align="justify"><font face="verdana" size="2">Ha sido dif&iacute;cil demostrar grandes beneficios sobre la supervivencia, por lo tanto la RC luego de la CRC no deber&iacute;a estar dirigida a mejorar esta supervivencia, sino a lograr un reintegro precoz a la actividad laboral y mejorar la calidad de vida (actividad f&iacute;sica y estado psicol&oacute;gico), con el consiguiente impacto econ&oacute;mico favorable que genera tanto en los pacientes como en el gasto del sistema de salud.</font></p>  	    <p align="justify"><font face="verdana" size="2">Los programas de RC deben ser multidisciplinarios con participaci&oacute;n de cardi&oacute;logos, nutricionistas, psic&oacute;logos y fisioterapistas, y comenzar en el ambiente hospitalario de forma precoz.</font></p>  	    <p align="justify"><font face="verdana" size="2">Se deber&iacute;a tambi&eacute;n identificar &#171;a priori&#187; la adherencia a los programas y estimular la RC domiciliaria en pacientes con mayor riesgo de abandono de los programas hospitalarios.</font></p>  	    <p align="justify"><font face="verdana" size="2">La indicaci&oacute;n de RC es clara; sin embargo, los cardi&oacute;logos y cirujanos cardiacos no siempre promueven y ofrecen esta herramienta terap&eacute;utica a sus pacientes. En el campo de la medicina laboral tampoco se tienen en cuenta los beneficios.</font></p>  	    <p align="justify"><font face="verdana" size="2">El sistema sanitario deber&iacute;a promover y financiar programas de RC en pacientes intervenidos.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Financiaci&oacute;n</b></font></p>  	    ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">No se recibi&oacute; patrocinio de ning&uacute;n tipo para llevar a cabo este estudio/art&iacute;culo.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Conflicto de intereses</b></font></p>  	    <p align="justify"><font face="verdana" size="2">Los autores declaran no tener ning&uacute;n conflicto de intereses.</font></p>  	    <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>  	    <p align="justify"><font face="verdana" size="2"><b>Bibliograf&iacute;a</b></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">1. Heberden W. Some accounts of a disorder of the chest. Med Trans Coll Physician. 1772;2:59.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1133060&pid=S1405-9940201400040000900001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --></font></p>  	    <!-- ref --><p align="justify"><font face="verdana" size="2">2. Redwood DR, Rosing DR, Epstein SE. Circulatory and symptomatic effects of physical training in patients with coronary&#45;artery disease and angina pectoris. N Engl J Med. 1972;286:959.    &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=1133062&pid=S1405-9940201400040000900002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><br></font></p>  	    ]]></body>
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