<?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>1134-928X</journal-id>
<journal-title><![CDATA[Gerokomos]]></journal-title>
<abbrev-journal-title><![CDATA[Gerokomos]]></abbrev-journal-title>
<issn>1134-928X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Española de Enfermería Geriátrica y Gerontológica]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1134-928X2012000200007</article-id>
<article-id pub-id-type="doi">10.4321/S1134-928X2012000200007</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[El índice tobillo-brazo como predictor de mortalidad vascular]]></article-title>
<article-title xml:lang="en"><![CDATA[Ankle brachial index as indicator for vascular mortality]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arévalo Manso]]></surname>
<given-names><![CDATA[Juan José]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Juárez Martín]]></surname>
<given-names><![CDATA[Belén]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gala Chacón]]></surname>
<given-names><![CDATA[Encarnación]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez Martínez]]></surname>
<given-names><![CDATA[Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,Hospital Universitario La Paz Servicio de Neurología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2012</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2012</year>
</pub-date>
<volume>23</volume>
<numero>2</numero>
<fpage>88</fpage>
<lpage>91</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S1134-928X2012000200007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S1134-928X2012000200007&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S1134-928X2012000200007&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[El índice tobillo-brazo (ITB) es un parámetro que muestra la relación entre la tensión arterial sistólica de la extremidad superior y la extremidad inferior. Este indicador, ampliamente estudiado y presente en la bibliografía, se ha mostrado como excelente predictor de mortalidad tanto vascular como por causas generales cuando presenta valores fuera del rango establecido como normal (0,90-1,30). En dichas situaciones la utilidad del ITB reside en detectar precozmente la existencia de enfermedad arterial periférica (EAP) durante su fase asintomática y servir como parámetro de corte para el establecimiento de medidas preventivas más contundentes antes de que el daño vascular existente se haga sintomático. Para el profesional de enfermería este parámetro constituye una potente herramienta de valoración, objetiva y cuantitativa, que permite seleccionar aquellos pacientes en los que es preciso potenciar al máximo los cuidados preventivos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[The ankle-brachial index (ABI) is a simple test showing the relationship between systolic blood pressure in the upper and the lower limbs. This parameter widely studied in literature has been reported as an excellent vascular and all-cause death predictor when exceeds the normal values (0.90-1.30). In such situation the ABI can early detect periferic arterial disease (PAD) in asymptomatic phase and be a cutoff parameter to consider more aggressive preventive interventions before the existing vascular damage becomes symptomatic. This test is a powerful assessment tool for nurses to select those patients needing to maximize preventive cares. The nursing staff training for ABI measurement, the provision of suitable equipment by the Health Institutions and the development of reliable and more simple measurement methods are key issues that would facilitate its routinely and systematically use to improve the preventive strategy in vascular diseases.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Índice tobillo-brazo]]></kwd>
<kwd lng="es"><![CDATA[valoración de enfermería]]></kwd>
<kwd lng="es"><![CDATA[enfermedad arterial periférica]]></kwd>
<kwd lng="es"><![CDATA[arteriosclerosis]]></kwd>
<kwd lng="es"><![CDATA[técnicas y procedimientos diagnósticos]]></kwd>
<kwd lng="es"><![CDATA[prueba diagnóstica]]></kwd>
<kwd lng="es"><![CDATA[prevención primaria]]></kwd>
<kwd lng="es"><![CDATA[prevención secundaria]]></kwd>
<kwd lng="es"><![CDATA[cuidados de enfermería]]></kwd>
<kwd lng="en"><![CDATA[Ankle-brachial index]]></kwd>
<kwd lng="en"><![CDATA[nursing assessment]]></kwd>
<kwd lng="en"><![CDATA[periferic arterial disease]]></kwd>
<kwd lng="en"><![CDATA[atherosclerosis]]></kwd>
<kwd lng="en"><![CDATA[diagnostic techniques and procedures]]></kwd>
<kwd lng="en"><![CDATA[diagnostic test]]></kwd>
<kwd lng="en"><![CDATA[primary prevention]]></kwd>
<kwd lng="en"><![CDATA[secondary prevention]]></kwd>
<kwd lng="en"><![CDATA[nursing care]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ 
    <p><a name="top"></a><font face="Verdana" size="2"><b>RINCÓN CIENTÍFICO</b></font></p>
    <p><font face="Verdana" size="2"><b>COMUNICACIONES</b></font></p>
    <p>&nbsp;</p>
    <p><font face="Verdana" size="4"><b>El &iacute;ndice tobillo-brazo como predictor de mortalidad vascular</b></font></p>
    <p><font face="Verdana" size="4"><b>Ankle brachial index as indicator for vascular mortality</b></font></p>
    <p>&nbsp;</p>
    <p>&nbsp;</p>
    <p><font face="Verdana" size="2"><b>Juan Jos&eacute; Ar&eacute;valo Manso; Bel&eacute;n Ju&aacute;rez Mart&iacute;n; Encarnaci&oacute;n Gala Chac&oacute;n; Carmen Rodr&iacute;guez Mart&iacute;nez</b></font></p>
    <p><font face="Verdana" size="2">Diplomado Universitario en Enfermer&iacute;a. Servicio de Neurolog&iacute;a. Hospital Universitario La Paz.</font></p>
    ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2"><a href="#bajo">Dirección para correspondencia</a></font></p>
    <p>&nbsp;</p>
    <p>&nbsp;</p>
<hr size="1">
    <p><font face="Verdana" size="2"><b>RESUMEN</b></font></p>
    <p><font face="Verdana" size="2">El &iacute;ndice tobillo-brazo (ITB) es un par&aacute;metro que muestra la relaci&oacute;n entre la tensi&oacute;n arterial sist&oacute;lica de la extremidad superior y la extremidad inferior. Este indicador, ampliamente estudiado y presente en la bibliograf&iacute;a, se ha mostrado como excelente predictor de mortalidad tanto vascular como por causas generales cuando presenta valores fuera del rango establecido como normal (0,90-1,30). En dichas situaciones la utilidad del ITB reside en detectar precozmente la existencia de enfermedad arterial perif&eacute;rica (EAP) durante su fase asintom&aacute;tica y servir como par&aacute;metro de corte para el establecimiento de medidas preventivas m&aacute;s contundentes antes de que el da&ntilde;o vascular existente se haga sintom&aacute;tico. Para el profesional de enfermer&iacute;a este par&aacute;metro constituye una potente herramienta de valoraci&oacute;n, objetiva y cuantitativa, que permite seleccionar aquellos pacientes en los que es preciso potenciar al m&aacute;ximo los cuidados preventivos.</font></p>
    <p><font face="Verdana" size="2"><b>Palabras clave:</b> &Iacute;ndice tobillo-brazo, valoraci&oacute;n de enfermer&iacute;a, enfermedad arterial perif&eacute;rica, arteriosclerosis, t&eacute;cnicas y procedimientos diagn&oacute;sticos, prueba diagn&oacute;stica, prevenci&oacute;n primaria, prevenci&oacute;n secundaria, cuidados de enfermer&iacute;a.</font></p>
<hr size="1">
    <p><font face="Verdana" size="2"><b>SUMMARY</b></font></p>
    <p><font face="Verdana" size="2">The ankle-brachial index (ABI) is a simple test showing the relationship between systolic blood pressure in the upper and the lower limbs. This parameter widely studied in literature has been reported as an excellent vascular and all-cause death predictor when exceeds the normal values (0.90-1.30). In such situation the ABI can early detect periferic arterial disease (PAD) in asymptomatic phase and be a cutoff parameter to consider more aggressive preventive interventions before the existing vascular damage becomes symptomatic. This test is a powerful assessment tool for nurses to select those patients needing to maximize preventive cares. The nursing staff training for ABI measurement, the provision of suitable equipment by the Health Institutions and the development of reliable and more simple measurement methods are key issues that would facilitate its routinely and systematically use to improve the preventive strategy in vascular diseases.</font></p>
    <p><font face="Verdana" size="2"><b>Key words:</b> Ankle-brachial index, nursing assessment, periferic arterial disease, atherosclerosis, diagnostic techniques and procedures, diagnostic test, primary prevention, secondary prevention, nursing care.</font></p>
<hr size="1">
    <p>&nbsp;</p>
    ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2"><b>Introducci&oacute;n</b></font></p>
    <p><font face="Verdana" size="2">El &iacute;ndice tobillo-brazo (ITB) es un par&aacute;metro que muestra la relaci&oacute;n existente entre la presi&oacute;n arterial sist&oacute;lica (PAS) de extremidades superiores y la parte distal de las extremidades inferiores. Dicho par&aacute;metro se comenz&oacute; a utilizar a partir de 1969 para valorar la permeabilidad del sistema arterial de la parte inferior de la pierna y detectar la presencia de enfermedad arterial perif&eacute;rica (EAP) (1-3). Esta patolog&iacute;a en muchos casos no tiene expresi&oacute;n cl&iacute;nica y gracias al ITB puede detectarse cuando a&uacute;n es asintom&aacute;tica. La EAP es un buen signo de aterosclerosis sist&eacute;mica y su presencia incrementa la probabilidad de mortalidad vascular y general (4-6). Por tanto, el ITB constituye un importante predictor de enfermedad cardiovascular y cerebrovascular (4-25) y debido a su sencillez y elevada sensibilidad y especificidad (26-27) su uso ha suscitado gran inter&eacute;s.</font></p>
    <p><font face="Verdana" size="2">El rango de valores del ITB considerado como normal comprende el rango 0,90-1,30, ampliando algunos autores el l&iacute;mite superior hasta 1,40. Cuando este par&aacute;metro se encuentra por debajo de 0,90 se considera que el paciente sufre EAP seg&uacute;n se manifiesta en la literatura de forma generalizada. Los valores superiores a 1,30 se han asociado a un aumento de la rigidez vascular por calcificaci&oacute;n de la pared arterial y a mayor riesgo de eventos cardiacos y mortalidad por todas las causas (28,29), aunque el significado cl&iacute;nico de dichas cifras ha sido poco estudiado ser&iacute;an necesarios m&aacute;s estudios para conocer su relevancia.</font></p>
    <p>&nbsp;</p>
    <p><font face="Verdana" size="2"><b>La determinaci&oacute;n del ITB</b></font></p>
    <p><font face="Verdana" size="2">El m&eacute;todo com&uacute;nmente utilizado para la determinaci&oacute;n de este &iacute;ndice precisa de la determinaci&oacute;n de la PAS en ambos brazos, ambas arterias tibiales posteriores y ambas arterias pedias con la ayuda de un esfingoman&oacute;metro manual y un doppler de mano de 8 mhz para la detecci&oacute;n de pulsos (<a href="#f1">Fig. 1</a>). La f&oacute;rmula de c&aacute;lculo utilizada puede presentar peque&ntilde;as variaciones seg&uacute;n el estudio consultado, fundamentalmente a la hora de considerar qu&eacute; valores de PAS son utilizados para el c&aacute;lculo del ITB. En general, el ITB se calcula dividiendo la presi&oacute;n arterial sist&oacute;lica tibial posterior y pedia dorsal entre la presi&oacute;n sist&oacute;lica braquial, utilizando el valor m&aacute;s bajo de ambas piernas como ITB general del paciente (27, 30) (<a href="#f2">Fig. 2</a>).</font></p>
    <p align="center"><font face="Verdana" size="2"><a name="f1"><img src="/img/revistas/geroko/v23n2/helcos2_f1.jpg"></a></font></p>
    <p>&nbsp;</p>
    <p>&nbsp;</p>
    <p align="center"><font face="Verdana" size="2"><a name="f2"><img src="/img/revistas/geroko/v23n2/helcos2_f2.jpg"></a></font></p>
    ]]></body>
<body><![CDATA[<p>&nbsp;</p>
    <p><font face="Verdana" size="2"><b>M&eacute;todos alternativos de determinaci&oacute;n del ITB</b></font></p>
    <p><font face="Verdana" size="2">El m&eacute;todo considerado como est&aacute;ndar de oro para la determinaci&oacute;n del ITB es el descrito anteriormente y precisa un esfingoman&oacute;metro manual y un doppler de mano. Junto a dicho material este m&eacute;todo precisa de personal entrenado y con cierta experiencia para asegurar mediciones fiables. Esto ha supuesto un inconveniente importante para la utilizaci&oacute;n del ITB en el <i>screening</i> rutinario de la EAP en las consultas de Atenci&oacute;n Primaria o en la valoraci&oacute;n de los cuidados de &uacute;lceras vasculares en la extremidad inferior, haciendo que solamente una peque&ntilde;a parte de pacientes sean adecuadamente diagnosticados en sus centros de Atenci&oacute;n Primaria (31, 32). La necesidad de desarrollar un m&eacute;todo m&aacute;s sencillo para la determinaci&oacute;n del ITB en las consultas de Atenci&oacute;n Primaria ha sido un aspecto considerado de importancia para algunos autores (33) y por ello algunos investigadores han intentado a trav&eacute;s de diversos estudios validar m&eacute;todos m&aacute;s sencillos y r&aacute;pidos que eviten dichos inconvenientes. Uno de los m&eacute;todos testados fue la detecci&oacute;n de pulsos. En un principio existi&oacute; la creencia de que la inexistencia de pulsos en las zonas distales de las extremidades inferiores o la debilidad de los mismos implicaba la existencia de EAP, pero pronto surgieron estudios desmintiendo este hecho, tanto por la importante cantidad de falsos negativos como de falsos positivos (34-38). Otro m&eacute;todo utilizado fue la determinaci&oacute;n del ITB mediante la medici&oacute;n de las presiones sist&oacute;licas mediante un tensi&oacute;metro autom&aacute;tico, pero los resultados obtenidos en los diversos estudios que investigaron esta posibilidad mostraron resultados conflictivos (39-45) y, por tanto, no puede ser considerado como fiable.</font></p>
    <p>&nbsp;</p>
    <p><font face="Verdana" size="2"><b>El valor pron&oacute;stico del ITB</b></font></p>
    <p><font face="Verdana" size="2">Los estudios publicados afirman que los pacientes con un ITB por debajo del valor normal presentan un riesgo de mortalidad por cualquier causa incrementado de 2 a 4 veces en la poblaci&oacute;n general (4-7, 17, 46), mientras que el riesgo de muerte por enfermedad coronaria se incrementa 6 veces en adultos de edad media (4) y m&aacute;s de 3 veces en pacientes ancianos (5, 6). Seg&uacute;n un estudio prospectivo realizado por Steg y cols., el porcentaje de pacientes que tras un a&ntilde;o de seguimiento presentaron un infarto de miocardio o un ictus, fallecieron por enfermedad cardiovascular o requirieron hospitalizaci&oacute;n fue del 5,3% entre aquellos sin afectaci&oacute;n vascular y del 12,6% (2,37 veces m&aacute;s) en los sujetos con cl&iacute;nica vascular en un territorio, el 21,2% (4 veces m&aacute;s) en los que ten&iacute;an afectaci&oacute;n de dos territorios y hasta del 26,3% (4,96 veces m&aacute;s) en los que ten&iacute;an afectaci&oacute;n de tres territorios (47).</font></p>
    <p><font face="Verdana" size="2">El <i>Cardiovascular Health Study</i> mostr&oacute; una incidencia de ictus a los 6 a&ntilde;os del 21,2&permil; (2,32 veces m&aacute;s) en personas con un ITB bajo, en contraste con un 9,1&permil; en aquellos con un ITB normal (7).</font></p>
    <p><font face="Verdana" size="2">La prevalencia general del ITB bajo oscila entre el 5 y el 30% en diferentes estudios (12, 48-52), dependiendo dicha variabilidad de las caracter&iacute;sticas de la muestra estudiada, fundamentalmente de la edad, pero tambi&eacute;n de factores como la procedencia &eacute;tnica y la proporci&oacute;n de pacientes con eventos cardiovasculares, diabetes <i>mellitus</i> u otros factores de riesgo asociados. As&iacute;, por ejemplo, en los pacientes diab&eacute;ticos se puede estimar una prevalencia de entre el 20 y el 30%, dependiendo principalmente de la edad del paciente y del tiempo de evoluci&oacute;n de la DM (26, 53, 54). En el estudio de Rotterdam los pacientes en la franja de los 55 a 59 a&ntilde;os la prevalencia fue del 8%, en claro contraste con el 55% (6,87 veces m&aacute;s) en los mayores de 85 a&ntilde;os (51), algo l&oacute;gico debido al deterioro del sistema vascular asociado al proceso de envejecimiento. En pacientes con ictus isqu&eacute;mico se detect&oacute; una incidencia de ITB bajo de entre el 12,7 y 32,4% (55, 56).</font></p>
    <p>&nbsp;</p>
    <p><font face="Verdana" size="2"><b>Utilidad del ITB</b></font></p>
    ]]></body>
<body><![CDATA[<p><font face="Verdana" size="2">Debido a que la evoluci&oacute;n natural de la arteriosclerosis comienza con una fase asintom&aacute;tica de larga duraci&oacute;n seguida de una fase cl&iacute;nica sintom&aacute;tica, con frecuencia s&uacute;bita y mortal, la base de su tratamiento deber&iacute;a sustentarse fundamentalmente en optimizar la prevenci&oacute;n primaria y el control de su progresi&oacute;n para evitar la aparici&oacute;n de graves complicaciones cardiovasculares y por tanto mejorar su pron&oacute;stico (55, 57-59). Esta optimizaci&oacute;n de medidas preventivas podr&iacute;a contemplar una reducci&oacute;n de la concentraci&oacute;n de colesterol m&aacute;s all&aacute; de lo habitualmente recomendado (60, 61), el logro de mayores descensos de la presi&oacute;n arterial (62) o una optimizaci&oacute;n del tratamiento antiagregante (63-65). En lo referente a los cuidados de enfermer&iacute;a esto supone optimizar los cuidados orientados tanto a la educaci&oacute;n sanitaria como a la adhesi&oacute;n a las medidas farmacol&oacute;gicas, diet&eacute;ticas y de actividad f&iacute;sica, con el fin de lograr por parte del paciente un grado de comprensi&oacute;n adecuado de lo que supone tener un ITB alterado y de la importancia del cumplimiento de todas las medidas preventivas puestas en marcha. En los pacientes que ya han sufrido un evento vascular, la importancia reside tanto en la prevenci&oacute;n secundaria como en la prevenci&oacute;n primaria de otro tipo de episodios vasculares, ya que debido a la naturaleza sist&eacute;mica de la aterosclerosis un ITB bajo refleja no solo la afecci&oacute;n del sistema arterial de la extremidad inferior, sino su progresi&oacute;n hacia otros territorios, como el coronario, el carot&iacute;deo o el intracraneal (52, 66). Diversos estudios han observado que los pacientes con afectaci&oacute;n de varios territorios vasculares tienen un riesgo de complicaciones cardiovasculares y de muerte muy superior al de los sujetos con afectaci&oacute;n de un solo territorio (47). Esto tambi&eacute;n se aplica a los pacientes con afectaci&oacute;n subcl&iacute;nica (13, 67, 68).</font></p>
    <p><font face="Verdana" size="2">El ITB tambi&eacute;n tiene un papel relevante en la valoraci&oacute;n y tratamiento de &uacute;lceras vasculares. Las directrices actuales para la valoraci&oacute;n de &uacute;lceras en la extremidad inferior estipulan que el ITB debe ser medido antes de decidir el tratamiento (69) pero solamente un escaso porcentaje de enfermeras de Atenci&oacute;n Primaria conocen los criterios requeridos para la valoraci&oacute;n de &uacute;lceras (70). Por otra parte, la falta de acceso a un doppler o a formaci&oacute;n en la determinaci&oacute;n del ITB hace dif&iacute;cil su utilizaci&oacute;n rutinaria.</font></p>
    <p>&nbsp;</p>
    <p><font face="Verdana" size="2"><b>Cr&iacute;ticas al ITB</b></font></p>
    <p><font face="Verdana" size="2">Seg&uacute;n apuntan algunos autores la importancia del ITB como factor de riesgo para la aparici&oacute;n de eventos vasculares debe ser considerada de forma relativa, pues el resto de factores de riesgo vascular tradicionales tambi&eacute;n ejercen su influencia y no solo la presencia de un ITB bajo, tanto en los eventos iniciales como en los recurrentes (71). En algunos estudios, tras realizarse el ajuste del conjunto de factores de riesgo presentes en cada paciente, se hall&oacute; que la relaci&oacute;n del ITB estaba atenuada y no fue tan significativa. Por ello, algunos autores concluyen que el ITB debe tener un uso cl&iacute;nico limitado ya que los factores de riesgo cardiovascular deben ser identificados m&aacute;s all&aacute; del conocimiento del ITB del paciente para poder tomar decisiones racionales con respecto a las intervenciones cl&iacute;nicas (22).</font></p>
    <p>&nbsp;</p>
    <p><font face="Verdana" size="2"><b>El ITB en Espa&ntilde;a</b></font></p>
    <p><font face="Verdana" size="2">En Espa&ntilde;a la introducci&oacute;n del uso del ITB ha sido relativamente reciente y los primeros trabajos publicados aparecen en 1998 (72, 73) aunque es a partir de 2005 cuando comienzan a aparecer estudios m&aacute;s relevantes y de forma m&aacute;s habitual (74-77).</font></p>
    <p><font face="Verdana" size="2">La utilidad del ITB para las enfermeras espa&ntilde;olas comenz&oacute; a ser considerada en 1999 como herramienta de valoraci&oacute;n en la decisi&oacute;n de los cuidados de las &uacute;lceras vasculares (78, 79) y ya en 2001 apareci&oacute; el primer trabajo en el que se consideraba este par&aacute;metro de utilidad en los cuidados de los pacientes con EAP (80,81), donde adem&aacute;s se argumentaba la importancia de que la determinaci&oacute;n del ITB se realice en las consultas de enfermer&iacute;a en los centros de Atenci&oacute;n Primaria (80). Es evidente que para el profesional de enfermer&iacute;a este par&aacute;metro constituye una potente herramienta de valoraci&oacute;n, objetiva y cuantitativa, que permite seleccionar aquellos pacientes en los que es preciso potenciar al m&aacute;ximo los cuidados preventivos. Sin duda, la utilizaci&oacute;n del ITB por parte de las enfermeras es una gran oportunidad por ser un recurso que a&uacute;n no ha sido suficientemente explotado en nuestro pa&iacute;s.</font></p>
    <p>&nbsp;</p>
    ]]></body>
<body><![CDATA[<p align="center"><font face="Verdana" size="2"><img src="/img/revistas/geroko/v23n2/helcos2_f3.jpg"></font></p>
    <p>&nbsp;</p>
    <p><font face="Verdana" size="2"><b>Conclusiones</b></font></p>
    <p><font face="Verdana" size="2">El ITB es un concepto ampliamente presente en la bibliograf&iacute;a y que claramente ha sido presentado como predictor de mortalidad vascular. Su importancia reside en su capacidad para detectar precozmente EAP cuando a&uacute;n se encuentra en su fase asintom&aacute;tica.</font></p>
    <p><font face="Verdana" size="2">Pese a la opini&oacute;n de algunos autores que relativizan la importancia del ITB a la hora de tomar decisiones cl&iacute;nicas, lo cierto es que la alteraci&oacute;n de este par&aacute;metro pone de manifiesto la existencia de un da&ntilde;o vascular real en el paciente. Este hecho es una etapa m&aacute;s en el camino hacia un episodio vascular agudo grave que suponga un deterioro importante en la salud del paciente e incluso la muerte. Por ello, el ITB deber&iacute;a formar parte del conjunto de determinaciones que se realizan con fines de control preventivo, tales como la toma de tensi&oacute;n arterial y las determinaciones peri&oacute;dicas de glucosa o colesterol total en sangre, donde el personal de enfermer&iacute;a tiene un protagonismo importante, especialmente en el &aacute;mbito de la Atenci&oacute;n Primaria.</font></p>
    <p><font face="Verdana" size="2">Pese a tratarse de un par&aacute;metro sencillo de calcular, una de las limitaciones existentes para su uso generalizado y rutinario es la necesidad de material espec&iacute;fico y de personal entrenado y con cierta experiencia para obtener mediciones fiables. La formaci&oacute;n de las enfermeras en la determinaci&oacute;n del ITB, la provisi&oacute;n del material necesario por parte de las instituciones sanitarias y el desarrollo de m&eacute;todos de medida fiables y m&aacute;s sencillos son aspectos clave que permitir&iacute;an su uso rutinario y sistem&aacute;tico mejorando de esta manera la estrategia preventiva de las patolog&iacute;as de etiolog&iacute;a vascular.</font></p>
    <p>&nbsp;</p>
    <p><font face="Verdana" size="2"><b>Bibliograf&iacute;a</b></font></p>
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    ]]></body>
<body><![CDATA[<p>&nbsp;</p>
    <p>&nbsp;</p>
    <p><font face="Verdana" size="2"><a href="#top"><img border="0" src="/img/revistas/geroko/v23n2/seta.gif" width="15" height="17"></a><a name="bajo"></a><b>Dirección para correspondencia:</b>    <br>Juan Jos&eacute; Ar&eacute;valo Manso    <br>Paseo de la Castellana, 261    <br>
28046 Madrid - Tel&eacute;f.: 653 43 28 10    <br>E-mail: 
<a href="mailto:jjarevaloes@hotmail.com">jjarevaloes@hotmail.com</a></font></p>
     ]]></body><back>
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