<?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>0300-9041</journal-id>
<journal-title><![CDATA[Ginecología y obstetricia de México]]></journal-title>
<abbrev-journal-title><![CDATA[Ginecol. obstet. Méx.]]></abbrev-journal-title>
<issn>0300-9041</issn>
<publisher>
<publisher-name><![CDATA[Federación Mexicana de Colegios de Obstetricia y Ginecología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0300-90412020000400006</article-id>
<article-id pub-id-type="doi">10.24245/gom.v88i4.4091</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Técnica de doble disparo (doubble trigger) en pacientes normorrespondedoras con bajo porcentaje de ovocitos maduros]]></article-title>
<article-title xml:lang="en"><![CDATA[Doubble Trigger in patients with a normal response with a low percentage of mature oocytes]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Kably-Ambe]]></surname>
<given-names><![CDATA[Alberto]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Olavarría-Guadarrama]]></surname>
<given-names><![CDATA[Mónica Yazmín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Carballo-Mondragón]]></surname>
<given-names><![CDATA[Esperanza]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Roque-Sánchez]]></surname>
<given-names><![CDATA[Armando Miguel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Durán-Monterrosas]]></surname>
<given-names><![CDATA[Leonor Ángela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Aranda]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Brito-Sandoval]]></surname>
<given-names><![CDATA[Fabiola]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital Ángeles Lomas Centro de Fertilidad del CEPAM ]]></institution>
<addr-line><![CDATA[Huixquilucan Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<volume>88</volume>
<numero>4</numero>
<fpage>244</fpage>
<lpage>251</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0300-90412020000400006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0300-90412020000400006&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0300-90412020000400006&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  OBJETIVO:  Evaluar el efecto del doble disparo en pacientes con un ciclo previo con menos de 65% de ovocitos maduros respecto de los ovocitos capturados, en una población con respuesta normal a la inducción de la ovulación con hCG recombinante o urinaria.  MATERIALES Y MÉTODOS:  Estudio de cohorte, prospectivo, efectuado en pacientes con diagnóstico de infertilidad, en tratamiento con fertilización in vitro, evaluadas en el Centro Mexicano de Fertilidad (Hospital Ángeles Lomas) entre 2017 y 2019. El tratamiento se llevó a cabo en la misma paciente, en cuyo ciclo previo convencional con esquema de antagonista e inducción de la ovulación con hCG tuvo respuesta ovárica subóptima y captura ovocitaria con menos de 65% en fase M2 (Grupo 1). Posteriormente se les indicó un segundo ciclo con el mismo esquema de gonadotropinas e inducción de la ovulación con doble disparo: acetato de triptorelina 1 mg + 5000 UI de hCG urinaria 40 y 34 horas previas a la captura (Grupo 2). Se evaluaron el porcentaje y la cantidad de ovocitos capturados en fase M2.  RESULTADOS:  Se registraron 34 pacientes en quienes se llevaron a cabo 68 ciclos. La cantidad de ovocitos capturados fue mayor en el grupo 2 (agonista de GnRH + hCG urinaria; p = 0.03). El doble disparo aumentó el porcentaje de ovocitos maduros (65.4 ± 21.3 vs 74.6 ± 20.2; p = 0.07).  CONCLUSIONES:  La técnica de doble disparo es valiosa para el tratamiento de pacientes con captura de ovocitos deficiente, aun con desarrollo folicular normal y concentraciones de estradiol adecuadas y óptimas de hCG el día de la captura. Se requieren estudios prospectivos de gran tamaño para dilucidar la recomendación mencionada de la técnica de &#8220;doble disparo&#8221;.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  OBJECTIVE:  To evaluate the effect of double trigger in patients with a previous cycle with less than 65% of mature oocytes compared to the captured oocytes, in a normorresponding population with induction of ovulation with recombinant or urinary hCG.  MATERIALS AND METHODS:  A prospective cohort study, conducted in patients diagnosed with infertility, treated with in vitro fertilization, evaluated at the Mexican Fertility Center (Hospital Angeles Lomas) between 2017 and 2019. The treatment was carried out in the same patient, in whose previous conventional cycle with antagonist scheme and induction of ovulation with hCG had suboptimal ovarian response and oocyte capture with less than 65% in M2 phase (Group 1). Subsequently, a second cycle was performed with the same scheme of gonadotropins and induction of ovulation with double shot: 1 mg triptorelin acetate + 5000 IU of urinary hCG 40 and 34 hours prior to capture (Group 2 or double trigger). Percentage and quantity of oocytes captured in M2 phase were evaluated.  RESULTS:  34 patients were registered, in whom 68 cycles were performed. The number of oocytes captured was greater in group 2 (agonist of GnRH + urinary hCG; p = 0.03). The double shot increased the percentage of mature oocytes 65.4 ± 21.3 vs 74.6 ± 20.2 (p = 0.07).  CONCLUSIONS:  The double trigger technique is valuable for the treatment of patients with poor oocyte capture, even with normal follicular development and adequate and optimal hCG estradiol concentrations on the day of capture. Large prospective studies are required to elucidate the aforementioned recommendation of the &#8220;double shot&#8221; technique.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Doble disparo]]></kwd>
<kwd lng="es"><![CDATA[fertilización in vitro]]></kwd>
<kwd lng="es"><![CDATA[agonista de GnRH]]></kwd>
<kwd lng="es"><![CDATA[maduración ovocitaria]]></kwd>
<kwd lng="es"><![CDATA[hCG]]></kwd>
<kwd lng="en"><![CDATA[Double trigger]]></kwd>
<kwd lng="en"><![CDATA[In vitro fertilization]]></kwd>
<kwd lng="en"><![CDATA[GnRH agonist]]></kwd>
<kwd lng="en"><![CDATA[Oocyte maturation: hCG]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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