<?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>1134-8046</journal-id>
<journal-title><![CDATA[Revista de la Sociedad Española del Dolor]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Soc. Esp. Dolor]]></abbrev-journal-title>
<issn>1134-8046</issn>
<publisher>
<publisher-name><![CDATA[Inspira Network Group, S.L ]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1134-80462021000700311</article-id>
<article-id pub-id-type="doi">10.20986/resed.2022.3885/2021</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Estudio preliminar sobre la evaluación del dolor mecánico a la presión y los mecanismos de modulación central del dolor mediante algometría en una unidad de anestesia]]></article-title>
<article-title xml:lang="en"><![CDATA[Preliminary study on the evaluation of mechanical pressure pain and central pain modulation mechanisms by algometry in an anesthesia unit]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ayala Pastorino]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Varaldi Azcoytia]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Illescas Calegari]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Castromán Espasandín]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad de la República Facultad de Medicina Departamento y Cátedra de Anestesiología. Hospital de Clínicas]]></institution>
<addr-line><![CDATA[Montevideo ]]></addr-line>
<country>Uruguay</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2021</year>
</pub-date>
<volume>28</volume>
<numero>6</numero>
<fpage>311</fpage>
<lpage>318</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_arttext&amp;pid=S1134-80462021000700311&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_abstract&amp;pid=S1134-80462021000700311&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.isciii.es/scielo.php?script=sci_pdf&amp;pid=S1134-80462021000700311&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  La algometría de presión es un método válido para evaluar el sistema sensorial de transmisión del dolor en seres humanos, mediante pruebas como la sumación temporal y la modulación condicionada del dolor. El objetivo de este trabajo fue la realización de una experiencia preliminar en el Servicio de Anestesio­logía de nuestro Hospital Universitario, utilizando la algometría de presión como test sensorial cuantitativo.  Metodología:  En una primera etapa, se realizó un estudio transversal de caso y control, sin aleatorización, donde se midió el umbral de dolor a la presión por algometría de presión a 58 pacientes que consultaron en la policlínica preoperatoria. Dieciocho tenían algún tipo de dolor crónico (grupo con dolor) y 40 no tenían dolor (grupo sin dolor). En una segunda etapa, se realizó un estudio observacional a 36 voluntarios sanos, residentes de anestesiología. En 16 se estudió la sumación temporal y en 20 la modulación condicionada del dolor, en ambos casos utilizando la algometría de presión. La aplicación de presión con manguito en el brazo se utilizó como estímulo heterotópico. Ambas pruebas fueron medidas a nivel del músculo trapecio derecho.  Resultados:  En el grupo con dolor el valor del umbral de dolor a la presión fue menor que en el grupo sin dolor en todos los puntos evaluados. El valor del umbral de dolor a la presión promedio de las cuatro regiones analizadas en el grupo con dolor, resultó ser menor que en el grupo sin dolor, 32,7 ± 10 Newtons versus 42 ± 11,7 Newtons (p = 0,004). El umbral de dolor a la presión promedio resultó más bajo en pacientes de sexo femenino que en los de sexo masculino, 36,6 ± 9 Newtons versus 48 ± 11 Newtons (p = 0,001). En los 20 voluntarios sanos en los que se realizó la prueba de modulación condicionada del dolor a nivel del trapecio, el umbral de dolor a la presión inicial fue de 63 ± 27 Newtons y el final fue de 72 ± 28 Newtons, con un aumento promedio de 9 Newtons (14,2 %). En los 16 en los que se realizó la prueba de sumación temporal se encontró que el nivel de dolor de la Escala Visual Numérica pasó de 4,1 ± 1,0 a 6,5 ± 1,5 entre el primer y décimo estímulo.  Conclusiones:  La aplicación de la algometría de presión en pacientes que consultaron en la policlínica preoperatoria mostró que los umbrales de dolor a la presión promedio fueron menores en pacientes de sexo femenino y con dolor crónico. En voluntarios sanos, la sumación temporal mostró un aumento en la intensidad del dolor, respuesta que podría extrapolarse a la expresión normal del fenómeno de "wind-up". En 80 % de los voluntarios sanos, la mo­dulación condicionada del dolor resultó en un aumento del umbral de dolor a la presión con la aplicación de un estímulo doloroso heterotópico. La algometría de presión constituye un instrumento útil y práctico. La información obtenida con los test sensorial cuantitativos puede ser de gran utilidad en las Unidades de Dolor Agudo y Crónico.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Pressure algometry is a valid method to evaluate the sensory system of pain transmission in humans, using tests such as temporal summation and conditioned modulation of pain. The objective of this work was to carry out a preliminary experience in the Anesthesiology Service of our University Hospital, using pressure algometry as a quantitative sensory test.  Methodology:  In a first stage, a cross-sectional case-control study was carried out, without randomization, where the pressure pain threshold was measured by pressure algometry in 58 patients who consulted in the preoperative evaluation visit. Eighteen had some type of chronic pain (pain group) and 40 had no pain (pain-free group). In a second stage, an observational study was carried out on 36 healthy volunteers, anesthesiology residents. Temporal summation was studied in 16 and conditioned modulation of pain in 20, in both cases using pressure algometry. The application of cuff pressure to the arm was used as a heterotopic stimulus. Both tests were measured at the level of the right trapezius muscle.  Results:  In the group with pain, the pressure pain threshold value was lower than in the group without pain in all the points evaluated. The pain threshold va­lue at the mean pressure of the four regions analyzed in the group with pain, turned out to be lower than in the group without pain, 32.7 ± 10 Newtons versus 42 ± 11.7 Newtons (p = 0.004). The mean pressu­re pain threshold was lower in female patients than in male patients, 36.6 ± 9 Newtons versus 48 ± 11 Newtons (p = 0.001). In the 20 healthy volunteers who underwent the conditioned modulation of pain test at the trapezius level, the pain threshold at the initial pressu­re was 63 ± 27 Newtons and the final pressure was 72 ± 28 Newtons, with an average increase of 9 Newtons (14.2 %). In the 16 in which the temporal summa­tion test was carried out, it was found that the pain level of the numerical visual scale went from 4.1 ± 1.0 to 6.5 ± 1.5 between the first and tenth stimulus.  Conclusions:  The application of pressure algometry in patients who consulted in the preoperative polyclinic, showed that pain thresholds at mean pressure were lower in female patients with chronic pain. In healthy volunteers, temporal summation showed an increase in pain intensity as a normal expression of the "wind-up" phenomenon. In 80 % of healthy volunteers, conditioned pain modulation resulted in an increase in pressure pain threshold with the application of a heterotopic pain stimulus. Pressure algometry is a useful and practical instrument. The information obtained with the quantitative sensory tests can be very useful in the Acute and Chronic Pain Units.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[test sensorial cuantitativo]]></kwd>
<kwd lng="es"><![CDATA[algometría de presión]]></kwd>
<kwd lng="es"><![CDATA[sumación temporal]]></kwd>
<kwd lng="es"><![CDATA[wind-up]]></kwd>
<kwd lng="es"><![CDATA[modulación condicionada del dolor]]></kwd>
<kwd lng="en"><![CDATA[Quantitative sensory test]]></kwd>
<kwd lng="en"><![CDATA[pressure algo­metry]]></kwd>
<kwd lng="en"><![CDATA[temporal summation]]></kwd>
<kwd lng="en"><![CDATA[wind-up]]></kwd>
<kwd lng="en"><![CDATA[conditioned mo­dulation of pain]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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