<?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>2790-8305</journal-id>
<journal-title><![CDATA[Revista Científica CMDLT]]></journal-title>
<abbrev-journal-title><![CDATA[Rev Cien CMDLT]]></abbrev-journal-title>
<issn>2790-8305</issn>
<publisher>
<publisher-name><![CDATA[Centro Médico Docente La Trinidad]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2790-83052022000100502</article-id>
<article-id pub-id-type="doi">10.55361/cmdlt.v16i.69</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Dispersión de la mezcla anestésica como predictor de éxito clínico del bloqueo peribulbar]]></article-title>
<article-title xml:lang="en"><![CDATA[Anesthetic mixture dispersion as a predictor of clinical success of peribulbar block]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez Rivero]]></surname>
<given-names><![CDATA[Alfredo José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gaudio]]></surname>
<given-names><![CDATA[Ferdinando]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Centro Médico Docente La Trinidad Servicio de Anestesiología ]]></institution>
<addr-line><![CDATA[Caracas ]]></addr-line>
<country>Venezuela</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Centro Médico Docente La Trinidad Servicio de Anestesiología ]]></institution>
<addr-line><![CDATA[Caracas ]]></addr-line>
<country>Venezuela</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2022</year>
</pub-date>
<volume>16</volume>
<numero>1</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://ve.scielo.org/scielo.php?script=sci_arttext&amp;pid=S2790-83052022000100502&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://ve.scielo.org/scielo.php?script=sci_abstract&amp;pid=S2790-83052022000100502&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://ve.scielo.org/scielo.php?script=sci_pdf&amp;pid=S2790-83052022000100502&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Introducción: La cirugía de cataratas es una de las más practicada a nivel mundial, la anestesia ocular tiene como objetivo la analgesia, acinesia y normotonia, la efectividad del bloqueo peribulbar es poco predecible y es necesaria la administración de más anestésico hasta en la mitad de los casos, la propagación y la extensión de la mezcla anestésica dentro del contenido de la órbita es variable y esta característica de reproducibilidad inadecuada es la principal desventaja. El ultrasonido supone una mejoría en la predicción de la calidad anestésica alcanzada según el análisis de las imágenes obtenidas.  Objetivo: Evaluar la eficacia del bloqueo peribulbar de acuerdo con la propagación de la mezcla anestésica determinado por ultrasonido.  Materiales y Métodos: Estudio de tipo observacional de carácter descriptivo, prospectivo y transversal con una muestra de 52 pacientes a quienes se les aplico bloqueo peribulbar y visualización por ultrasonido de la dispersión de la mezcla anestésica, sometidos a cirugía de cataratas.  Resultados: La detección de la mezcla anestésica en el espacio extraconal total, intraconal parcial e intraconal total deriva en una sensibilidad del 92%, especificidad del 78,57% y un valor predictivo positivo del 92,11% con un intervalo de confianza del 95%.  Conclusión: Se describieron cuatro patrones de propagación de la mezcla anestésica en el espacio retroocular y se calculó estadísticamente una proyección de efectividad la cual se correlaciono con las condiciones clínicas de los pacientes.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Introduction: Cataract surgery is one of the most practiced worldwide, ocular anesthesia aims at analgesia, akinesia and normotonia, the effectiveness of peribulbar block is not very predictable and the administration of more anesthetic is necessary in more than half of the cases, the spread and extension of the anesthetic mixture within the content of the orbit is variable and this characteristic of inadequate reproducibility is the main disadvantage. Ultrasound supposes an improvement in the prediction of the anesthetic quality according to the analysis of the images obtained.  Objective: To evaluate the efficacy of the peribulbar block according to the spread of the anesthetic mixture determined by ultrasound.  Methods: This is an observational, descriptive, prospective and cross-sectional study with a sample of 52 patients who underwent peribulbar block and ultrasound visualization of the dispersion of the anesthetic mixture, who underwent cataract surgery.  Results: The detection of the anesthetic mixture in the total extraconal, partial intraconal and total intraconal space results in a sensitivity of 92%, specificity of 78.57% and a positive predictive value of 92.11% with a confidence interval of 95%.  Conclusion: Four propagation patterns of the anesthetic mixture in the retroocular space were described and an effectiveness projection was statistically calculated which correlated with the clinical conditions of the patients.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Anestesia]]></kwd>
<kwd lng="es"><![CDATA[analgesia]]></kwd>
<kwd lng="es"><![CDATA[anestésicos]]></kwd>
<kwd lng="es"><![CDATA[ultrasonido]]></kwd>
<kwd lng="es"><![CDATA[sensibilidad y especificidad]]></kwd>
<kwd lng="es"><![CDATA[órbita]]></kwd>
<kwd lng="en"><![CDATA[Analgesia]]></kwd>
<kwd lng="en"><![CDATA[anesthesia]]></kwd>
<kwd lng="en"><![CDATA[anesthetics]]></kwd>
<kwd lng="en"><![CDATA[cataract]]></kwd>
<kwd lng="en"><![CDATA[sensitivity and specificity]]></kwd>
<kwd lng="en"><![CDATA[orbit]]></kwd>
</kwd-group>
</article-meta>
</front><back>
<ref-list>
<ref id="B1">
<label>1</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Leaming]]></surname>
<given-names><![CDATA[D.V]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Practices styles and preferences of ASCRS members]]></article-title>
<source><![CDATA[J Cataract Refract Surg]]></source>
<year>2003</year>
<volume>30</volume>
<page-range>892-900</page-range></nlm-citation>
</ref>
<ref id="B2">
<label>2</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Quigley]]></surname>
<given-names><![CDATA[H.A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Mortality associated with ophthalmic surgery. A 20- year experience at the wilmer institute]]></article-title>
<source><![CDATA[Am J Ophthalmol]]></source>
<year>1974</year>
<volume>77</volume>
<page-range>517-24</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Tornero Tornero]]></surname>
<given-names><![CDATA[Carlos]]></given-names>
</name>
<name>
<surname><![CDATA[Roqués Escolar]]></surname>
<given-names><![CDATA[Vicente]]></given-names>
</name>
<name>
<surname><![CDATA[Hernando Sáez]]></surname>
<given-names><![CDATA[Jorge]]></given-names>
</name>
<name>
<surname><![CDATA[Aliaga Font]]></surname>
<given-names><![CDATA[Luis]]></given-names>
</name>
</person-group>
<source><![CDATA[Fundamentos de anestesia regional]]></source>
<year>2019</year>
</nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Davis]]></surname>
<given-names><![CDATA[D.]]></given-names>
</name>
<name>
<surname><![CDATA[Mandel]]></surname>
<given-names><![CDATA[MR]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Efficacy and complication rate of 16224 consecutive peribulbar blocks. A prospective multicenter study]]></article-title>
<source><![CDATA[J Cataract Refract Surg]]></source>
<year>1994</year>
<volume>20</volume>
<page-range>327-37</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Hadzic]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<source><![CDATA[Tratado de Anestesia Regional y Manejo del Dolor Agudo]]></source>
<year>2010</year>
<edition>1ª</edition>
<publisher-loc><![CDATA[Mexico ]]></publisher-loc>
<publisher-name><![CDATA[McGrawhill]]></publisher-name>
</nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Nouvellon]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Cuvillon]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Ripart]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Regional anesthesia and eye surgery]]></article-title>
<source><![CDATA[Anesthesiology]]></source>
<year>2010</year>
<volume>113</volume>
<page-range>1236-42</page-range></nlm-citation>
</ref>
<ref id="B7">
<label>7</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ripart]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Lefrant]]></surname>
<given-names><![CDATA[JY]]></given-names>
</name>
<name>
<surname><![CDATA[de La Coussaye]]></surname>
<given-names><![CDATA[JE]]></given-names>
</name>
<name>
<surname><![CDATA[Prat-Pradal]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Vivien]]></surname>
<given-names><![CDATA[B]]></given-names>
</name>
<name>
<surname><![CDATA[Eledjam]]></surname>
<given-names><![CDATA[JJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Peribulbar vs retrobulbar anesthesia for ophthalmic surgery: an anatomical comparison of extraconal and intraconal injections]]></article-title>
<source><![CDATA[Anesthesiology]]></source>
<year>2001</year>
<volume>94</volume>
<page-range>56-62</page-range></nlm-citation>
</ref>
<ref id="B8">
<label>8</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Luyet]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Kenneth]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Kertes]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Avila]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Rajeev]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Real-time evaluation of diffusion of the local anesthetic solution during peribulbar block using ultrasound imaging and clinical correlates of diffusion]]></article-title>
<source><![CDATA[Reg anesth pain med]]></source>
<year>2012</year>
<volume>37</volume>
<page-range>455-9</page-range></nlm-citation>
</ref>
<ref id="B9">
<label>9</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Rodriguez]]></surname>
<given-names><![CDATA[P]]></given-names>
</name>
<name>
<surname><![CDATA[Baldo]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Mazzinari]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Villalta]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Romero]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ultrasound in peribulbar block: efficacy of a single-injection with short needle]]></article-title>
<source><![CDATA[European journal of anesthesiology]]></source>
<year>2013</year>
<volume>30</volume>
<page-range>118</page-range></nlm-citation>
</ref>
<ref id="B10">
<label>10</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Carneiro]]></surname>
<given-names><![CDATA[H]]></given-names>
</name>
<name>
<surname><![CDATA[Texeira]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Avila]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Murillo]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Magacho]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Comparison of needle path, anesthetic dispersion, and quality of anesthesia in retrobulbar and peribulbar blocks]]></article-title>
<source><![CDATA[Reg anesth pain med]]></source>
<year>2016</year>
<volume>41</volume>
<page-range>37-42</page-range></nlm-citation>
</ref>
<ref id="B11">
<label>11</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Calenda]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Muraine]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Ultrasound comparison of diffusion of local anesthetic solution after a peribulbar and a sub-tenon`s block: a pilot study]]></article-title>
<source><![CDATA[Int J Ophthalmol]]></source>
<year>2016</year>
<volume>18</volume>
<page-range>638-9</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
