<?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>1726-6718</journal-id>
<journal-title><![CDATA[Revista Cubana de Anestesiología y Reanimación]]></journal-title>
<abbrev-journal-title><![CDATA[Rev cuba anestesiol reanim]]></abbrev-journal-title>
<issn>1726-6718</issn>
<publisher>
<publisher-name><![CDATA[Editorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1726-67182019000300006</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Analgesia posoperatoria con opioide de acción rápida en la colecistectomía video laparoscópica]]></article-title>
<article-title xml:lang="en"><![CDATA[Postoperative analgesia with fast-acting opioid during videolaparoscopic cholecystectomy]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vasallo Comendeiro]]></surname>
<given-names><![CDATA[Víctor José]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Riveron Acosta]]></surname>
<given-names><![CDATA[Yunierkis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cabrera Garachipe]]></surname>
<given-names><![CDATA[Marbelis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vasallo Valdés]]></surname>
<given-names><![CDATA[Patricia]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Militar Central &#8220;Dr. Luis Díaz Soto&#8221;  ]]></institution>
<addr-line><![CDATA[La Habana ]]></addr-line>
<country>Cuba</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<volume>18</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S1726-67182019000300006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S1726-67182019000300006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S1726-67182019000300006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción:  La cirugía video laparoscópica posee beneficios para los pacientes. Las intervenciones con tiempos reducidos implican técnicas anestésicas ajustadas a ellos, lo que determina no pocas dificultades cuando el dolor aparece en la práctica asistencial. El hallazgo de pacientes con dolor posoperatorio inmediato motivó la realización del estudio.  Objetivo:  Evaluar la efectividad de un opioide de acción rápida como analgésico posoperatorio inmediato administrado vía intranasal.  Método: Se desarrolló un estudio causiexpereimental, con dos grupos de enfermos (100 cada uno) a los que se les realizó colecistectomía por vía laparoscópica en el Hospital Militar Central &#8220;Dr. Luis Díaz Soto&#8221;, a los 100 pacientes en estudio se les administró FENTANYL 50 mcg intranasal en gotas al llegar a la sala de cuidados posoperatorios. Las variables de estudio incluyeron el dolor según la Escala Visual Análoga (EVA), el tiempo de inicio de acción del opioide y la analgesia lograda, así como los efectos derivados de su empleo.  Resultados:  la edad promedio fue 51 ± 2, predominó el sexo masculino con 55 % de los casos, se evidenció una EVA promedio de todos los casos iniciales en 3. Al alta, 100 % de los pacientes del grupo estudio poseían analgesia excelente (EVA 2), mientras que los controles poseían una EVA promedio en 5. El prurito fue el evento adverso más frecuente tras la administración de FENTANYL intranasal.  Conclusiones:  El empleo de un opioide de acción rápida (FENTANYL) es una medida de control del dolor posoperatorio excelente y segura.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction:  Videolaparoscopic surgery has benefits for patients. Interventions with reduced times involve anesthetic techniques adjusted to them, which determines many difficulties when pain manifests in the care practice. The finding of patients with immediate postoperative pain motivated the study.  Objective:  To evaluate the effectiveness of a fast-acting opioid as an immediate postoperative analgesic administered by intranasal way.  Method:  A quasiexperimental study was developed, with two groups of patients (100 each) who underwent laparoscopic cholecystectomy at Dr. Luis Díaz Soto Central Military Hospital. The hundred patients under study were administered fentanyl 50 mcg as intranasal drops upon arriving at the postoperative care room. The study variables included pain according to the Visual Analogue Scale (VAS), the onset time of opioid action, and the analgesia achieved, as well as the effects derived from its use.  Results:  The average age was 51 ± 2, the male sex predominated with 55% of the cases, an average VAS of all the initial cases was evidenced in three. At discharge, 100% of the patients in the study group had excellent analgesia (VAS 2), whereas the controls had an average VAS in 5. Pruritus was the most frequent adverse event after the administration of intranasal fentanyl.  Conclusions:  The use of a fast-acting opioid (fentanyl) is an excellent and safe postoperative pain control measure.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Dolor]]></kwd>
<kwd lng="es"><![CDATA[opioides de acción rápida]]></kwd>
<kwd lng="es"><![CDATA[escala visual análoga]]></kwd>
<kwd lng="es"><![CDATA[FENTANYL intranasal]]></kwd>
<kwd lng="en"><![CDATA[pain]]></kwd>
<kwd lng="en"><![CDATA[fast-acting opioid]]></kwd>
<kwd lng="en"><![CDATA[Visual Analogous Scale]]></kwd>
<kwd lng="en"><![CDATA[intranasal fentanyl]]></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[Scotton]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Contardo]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Zerbatini]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Tosato]]></surname>
<given-names><![CDATA[SM]]></given-names>
</name>
<name>
<surname><![CDATA[Morpurgo]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[From laparoscopic right colectomy with extracorporeal anastomosis to robot-assited intracorporeal anastomosis to totally robotic right colectomy for cancer: The evolution of robotic multiquadrant abdominal surgery]]></article-title>
<source><![CDATA[J Laparoendosc Adv Surg Tech A]]></source>
<year>2018</year>
<volume>28</volume>
<numero>10</numero>
<issue>10</issue>
<page-range>1216-22</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[Duarte]]></surname>
<given-names><![CDATA[RJ]]></given-names>
</name>
<name>
<surname><![CDATA[Cristofani]]></surname>
<given-names><![CDATA[LM]]></given-names>
</name>
<name>
<surname><![CDATA[Odone Filho]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Srougi]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Denes]]></surname>
<given-names><![CDATA[FT]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Videolaparoscopic radical neprectomy after chemotherapy in the treatment of Wilms' tumor Long -term results of a pionner group]]></article-title>
<source><![CDATA[J Pediatr Urol]]></source>
<year>2017</year>
<volume>13</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>50</page-range></nlm-citation>
</ref>
<ref id="B3">
<label>3</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Trindade]]></surname>
<given-names><![CDATA[EN]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Videolaparoscopic appendectomy during pregnancy-gold standard]]></article-title>
<collab>Leboutte L del P.Trindade MR</collab>
<source><![CDATA[Ver Assoc Med Bras]]></source>
<year>2016</year>
<volume>62</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>13</page-range></nlm-citation>
</ref>
<ref id="B4">
<label>4</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Graudins]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Meek]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Egerton-Warburton]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Seith]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Furness]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Chapman]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The PICHFORK trial comparing the efficacy of intranasal ketamine and fentanyl in the relief of moderate to severe pain in children with limb injuries study protocol for a randomized controlled trial]]></article-title>
<source><![CDATA[Trials]]></source>
<year>2013</year>
<volume>14</volume>
<page-range>208</page-range></nlm-citation>
</ref>
<ref id="B5">
<label>5</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Singh]]></surname>
<given-names><![CDATA[RB]]></given-names>
</name>
<name>
<surname><![CDATA[Choubey]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Mehra]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Efficacy of oral transmucosal fentanyl citrate for premedication in patientes for surgery under general anestehesia]]></article-title>
<source><![CDATA[Anesth Essay Res]]></source>
<year>2017</year>
<volume>11</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>854-8</page-range></nlm-citation>
</ref>
<ref id="B6">
<label>6</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Schung]]></surname>
<given-names><![CDATA[SA]]></given-names>
</name>
<name>
<surname><![CDATA[TING]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Fentanyl formulations in the management of pain An Update]]></article-title>
<source><![CDATA[Drugs]]></source>
<year>2017</year>
<volume>77</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>747-63</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[Araldi]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Ferrari]]></surname>
<given-names><![CDATA[LF]]></given-names>
</name>
<name>
<surname><![CDATA[Levine]]></surname>
<given-names><![CDATA[JD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Hyperalgesic priming (type II) induced by repetead opioid exposure maintenance mechanisms]]></article-title>
<source><![CDATA[Pain]]></source>
<year>2017</year>
<volume>158</volume>
<numero>7</numero>
<issue>7</issue>
<page-range>1204-16</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[Ghan]]></surname>
<given-names><![CDATA[TJ]]></given-names>
</name>
<name>
<surname><![CDATA[Epstein]]></surname>
<given-names><![CDATA[RS]]></given-names>
</name>
<name>
<surname><![CDATA[Leone-Perkins]]></surname>
<given-names><![CDATA[ML]]></given-names>
</name>
<name>
<surname><![CDATA[Salimi]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[Iqbal]]></surname>
<given-names><![CDATA[SU]]></given-names>
</name>
<name>
<surname><![CDATA[Whang]]></surname>
<given-names><![CDATA[PG]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Practice patterns and treatment challenge in acute posoperative pain management: A survey of practicing phisicians]]></article-title>
<source><![CDATA[Pain Ter]]></source>
<year>2018</year>
<volume>10</volume>
<page-range>1007</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[Newell]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Jordan]]></surname>
<given-names><![CDATA[Z]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[The patient experience of patient-centered communication with nurses in the hospital settings a qualitative systematic review protocol]]></article-title>
<source><![CDATA[JBI Database System Rev Implement Rep]]></source>
<year>2015</year>
<volume>13</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>76-87</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[Desai]]></surname>
<given-names><![CDATA[K]]></given-names>
</name>
<name>
<surname><![CDATA[Carroll]]></surname>
<given-names><![CDATA[I]]></given-names>
</name>
<name>
<surname><![CDATA[Asch]]></surname>
<given-names><![CDATA[SM]]></given-names>
</name>
<name>
<surname><![CDATA[Seto]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
<name>
<surname><![CDATA[McDonald]]></surname>
<given-names><![CDATA[KM]]></given-names>
</name>
<name>
<surname><![CDATA[Curtin]]></surname>
<given-names><![CDATA[C]]></given-names>
</name>
<name>
<surname><![CDATA[Hernández Boussard]]></surname>
<given-names><![CDATA[T]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Utilization and effectiveness of mutimodal discharge analgesic for postoperative pain management]]></article-title>
<source><![CDATA[J Surg Res]]></source>
<year>2018</year>
<volume>228</volume>
<page-range>160-9</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[Hansen]]></surname>
<given-names><![CDATA[MS]]></given-names>
</name>
<name>
<surname><![CDATA[Mathiesen]]></surname>
<given-names><![CDATA[O]]></given-names>
</name>
<name>
<surname><![CDATA[Trautner]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Dahl]]></surname>
<given-names><![CDATA[JB]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Intranasal fentanyl in the treatment of acute pain-a systematic review]]></article-title>
<source><![CDATA[Acta Anaesthesiol Scand]]></source>
<year>2012</year>
<volume>56</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>407-19</page-range></nlm-citation>
</ref>
<ref id="B12">
<label>12</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Babazade]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
<name>
<surname><![CDATA[Turan]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Pharmacokinetic and pharmadynamic evaluation of sublingual sufentanyl in the treatment of posoperative pain]]></article-title>
<source><![CDATA[Expert Opin Drug Metab Toxicol]]></source>
<year>2016</year>
<volume>12</volume>
<numero>2</numero>
<issue>2</issue>
<page-range>217-24</page-range></nlm-citation>
</ref>
<ref id="B13">
<label>13</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Prommer]]></surname>
<given-names><![CDATA[E]]></given-names>
</name>
<name>
<surname><![CDATA[Thompson]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Intranasal fentanyl for pain control current status with a focus and patient considerations]]></article-title>
<source><![CDATA[Patient Prefer Adherence]]></source>
<year>2011</year>
<volume>5</volume>
<page-range>157-64</page-range></nlm-citation>
</ref>
<ref id="B14">
<label>14</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Prock]]></surname>
<given-names><![CDATA[N]]></given-names>
</name>
<name>
<surname><![CDATA[Facius]]></surname>
<given-names><![CDATA[A]]></given-names>
</name>
<name>
<surname><![CDATA[Hartmann]]></surname>
<given-names><![CDATA[L]]></given-names>
</name>
<name>
<surname><![CDATA[Baumann]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Nave]]></surname>
<given-names><![CDATA[R]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[An innovative phase I population approach to investigate the pharmacokinetics of an intranasal fentanyl spray in healty subjects]]></article-title>
<source><![CDATA[Int Clin Pharmacol Ther]]></source>
<year>2013</year>
<volume>51</volume>
<numero>6</numero>
<issue>6</issue>
<page-range>495-508</page-range></nlm-citation>
</ref>
<ref id="B15">
<label>15</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Golubovic]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Golubovic]]></surname>
<given-names><![CDATA[V]]></given-names>
</name>
<name>
<surname><![CDATA[Cindric-Stancin]]></surname>
<given-names><![CDATA[M]]></given-names>
</name>
<name>
<surname><![CDATA[Tokmadzic]]></surname>
<given-names><![CDATA[VS]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Intraperitoneal analgesia for laparocopic cholecystectomy bupivacaine versus bupivacaine with tramadol]]></article-title>
<source><![CDATA[Coll Antropol]]></source>
<year>2009</year>
<volume>33</volume>
<numero>1</numero>
<issue>1</issue>
<page-range>299-302</page-range></nlm-citation>
</ref>
<ref id="B16">
<label>16</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Borrell-Veja]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Humeidan]]></surname>
<given-names><![CDATA[ML]]></given-names>
</name>
<name>
<surname><![CDATA[Bergese]]></surname>
<given-names><![CDATA[SD]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Defining quality of recovery -What is important to patients . Best Pract Res]]></article-title>
<source><![CDATA[Anaesthesiol]]></source>
<year>2018</year>
<volume>32</volume>
<numero>3-4</numero>
<issue>3-4</issue>
<page-range>259-68</page-range></nlm-citation>
</ref>
<ref id="B17">
<label>17</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Royse]]></surname>
<given-names><![CDATA[CF]]></given-names>
</name>
<name>
<surname><![CDATA[Chung]]></surname>
<given-names><![CDATA[F]]></given-names>
</name>
<name>
<surname><![CDATA[Newman]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Stygall]]></surname>
<given-names><![CDATA[J]]></given-names>
</name>
<name>
<surname><![CDATA[Wilkinson]]></surname>
<given-names><![CDATA[DJ]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Predictors of patients satisfaction with anaesthesia and surgery care a cohort study using the Postoperative Quality of Recovery Scale]]></article-title>
<source><![CDATA[Eur J Anaesthesiol]]></source>
<year>2013</year>
<volume>30</volume>
<numero>3</numero>
<issue>3</issue>
<page-range>106-10</page-range></nlm-citation>
</ref>
<ref id="B18">
<label>18</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Coughlin]]></surname>
<given-names><![CDATA[SM]]></given-names>
</name>
<name>
<surname><![CDATA[Karanicolas]]></surname>
<given-names><![CDATA[PJ]]></given-names>
</name>
<name>
<surname><![CDATA[Emmerton-Coughlin]]></surname>
<given-names><![CDATA[HM]]></given-names>
</name>
<name>
<surname><![CDATA[Kanbur]]></surname>
<given-names><![CDATA[S]]></given-names>
</name>
<name>
<surname><![CDATA[Colquhoun]]></surname>
<given-names><![CDATA[PH]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Better late than never Impact of local analgesia timing on postoperative pain in laparoscopic surgery: a systematic review and metaanalysis]]></article-title>
<source><![CDATA[Surg Endosc]]></source>
<year>2010</year>
<volume>24</volume>
<numero>12</numero>
<issue>12</issue>
<page-range>3167-76</page-range></nlm-citation>
</ref>
<ref id="B19">
<label>19</label><nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Karaaslan]]></surname>
<given-names><![CDATA[D]]></given-names>
</name>
<name>
<surname><![CDATA[Sivaci]]></surname>
<given-names><![CDATA[RG]]></given-names>
</name>
<name>
<surname><![CDATA[Akbulut]]></surname>
<given-names><![CDATA[G]]></given-names>
</name>
<name>
<surname><![CDATA[Dilek]]></surname>
<given-names><![CDATA[ON]]></given-names>
</name>
</person-group>
<article-title xml:lang=""><![CDATA[Preemptive analgesia in laparoscopic colecystectomy a randomized controlled study]]></article-title>
<source><![CDATA[Pain Pratc]]></source>
<year>2006</year>
<volume>6</volume>
<numero>4</numero>
<issue>4</issue>
<page-range>237-41</page-range></nlm-citation>
</ref>
</ref-list>
</back>
</article>
