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<front>
<journal-meta>
<journal-id pub-id-type="pid">S1409-414220020002</journal-id>
<journal-title>Revista Costarricense de Cardiología</journal-title>
<abbrev-journal-title>Rev. costarric. cardiol</abbrev-journal-title>
<issn>1409-4142</issn>
<publisher>
<publisher-name>Asociación Costarricense de Cardiología</publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1409-41422002000200001</article-id>
<title-group>
<article-title xml:lang="es">Síndrome coronario agudo sin elevación del segmento ST: su enfoque terapéutico basado en su estratificación pronostica</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname>Díaz</surname>
<given-names>Rafael</given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution>,Instituto Cardiovascular de Rosario  </institution>
<addr-line>Santa Fe </addr-line>
<country>Argentina</country>
</aff>
<pub-date pub-type="pub">
<month>08</month>
<year>2002</year>
</pub-date>
<pub-date pub-type="epub">
<year>2002</year>
</pub-date>
<volume>4</volume>
<fpage>3</fpage>
<lpage>6</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http:/www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1409-41422002000200001&amp;lng=en&amp;nrm=iso&amp;tlng=en"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1409-41422002000200001&amp;lng=en&amp;nrm=iso&amp;tlng=en"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1409-41422002000200001&amp;lng=en&amp;nrm=iso"></self-uri></article-meta>
</front>
</article>
<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 pub-id-type="pid">S1409-414220020002</journal-id>
<journal-title>Revista Costarricense de Cardiología</journal-title>
<abbrev-journal-title>Rev. costarric. cardiol</abbrev-journal-title>
<issn>1409-4142</issn>
<publisher>
<publisher-name>Asociación Costarricense de Cardiología</publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1409-41422002000200002</article-id>
<title-group>
<article-title xml:lang="es">Taquicardia ventricular en corazón estructuralmente normal: características clínicas y electocardiográficas</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname>Gutiérrez Sotelo</surname>
<given-names>Oswaldo</given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Cruz Cruz</surname>
<given-names>Flory</given-names>
</name>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Araya Gómez</surname>
<given-names>Vivien</given-names>
</name>
</contrib>
</contrib-group>
<aff id="A">
<institution>,  </institution>
<addr-line> </addr-line>
</aff>
<pub-date pub-type="pub">
<month>08</month>
<year>2002</year>
</pub-date>
<pub-date pub-type="epub">
<year>2002</year>
</pub-date>
<volume>4</volume>
<fpage>7</fpage>
<lpage>14</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http:/www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1409-41422002000200002&amp;lng=en&amp;nrm=iso&amp;tlng=en"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1409-41422002000200002&amp;lng=en&amp;nrm=iso&amp;tlng=en"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1409-41422002000200002&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p>Introducción: Existe un subgrupo de pacientes con taquicardia ventricular (TV) en ausencia de cardiopatía estructural, tales como la TV del tracto de salida del ventriculo derecho o &quot;adenosina-sensible&quot; y la TV idiopática del ventriculo izquierdo o &quot;verapamilo-sensible&quot; Materiales y métodos: Se incluyeron pacientes que presentaron TV monomorfa sin evidencia de cardiopatía estructural. En los trazados electrocardiográficos durante taquicardia, se analizó la morfología de la taquicardia, el ciclo de la taquicardia, duración del complejo QRS, zona de transición, si la taquicardia era o no sostenida, los síntomas que causaban y el tratamiento indicado. Resultados: Se reclutaron 16 pacientes con edad promedio de 36 años y seguimiento promedio de 27.6 meses. Doce presentaron TV del tracto de salida del ventriculo derecho y cuatro TV idiopática del ventriculo izquierdo. La duración promedio del ciclo 391.25 + 80.57 ms, la frecuencia cardíaca promedio 160 + 32 latidos por minuto y la duración promedio del complejo QRS fue 132 ms. La mayoría de los pacientes con TV del tracto se salida del ventriculo derecho sólo episodios no sostenidos mientras que en tres de los cuatro pacientes con TV del ventriculo izquierdo fue sostenida. Conclusión: Las TV en corazón estructuralmente normal se presentan en personas jóvenes, frecuentemente son autolimitadas, siendo la taquicardia del tracto de salida del ventriculo derecho la más frecuente.</p></abstract>
<abstract abstract-type="short" xml:lang="en"><p>lntroduction: There is a subgroup of patients with ventricular tachycardia (VT) without overt cardiac illness, inciuding right ventricle outflow tract ventricular tachycardia, the so called &quot;adenosine-sensitive&quot; and idiopathic left ventricle ventricular tachycardia or &quot;verapamil-sensitive&quot; Methods: We included patients with monomorphic VT without evidence of cardiac disease. In twelve lead eledrocardiograms during tachycardia we analized tachycardia morphology, tachycardia cicle length, QRS complex duration, transition zone, if the tachycardia is sustained or not, related symptoms and therapy. Results: We included 16 patients with mean age of 36 years old and mean follow-up of 27.6 months. Twelve had right ventricle outflow trad VT and four idiopathic left ventricle VT. The mean cicle length was 391.25 + 80.57 ms, mean heart rate 160 + 32 beats per minute and the mean QRS duration 132 ms. The mayority of patients with right ventricle outflow trad VT had only non-sustained VT while in idiopathic left ventricle VT, 3 of 4 patients had sustained VT. Conclusion: VT without estructural cardiac disease affects young people, usually is self-limited, beíng the most frequent right ventricle outflow trad VT.</p></abstract>
<kwd-group>
<kwd>Taquicardia</kwd>
<kwd>Ventricular</kwd>
<kwd>Corazón</kwd>
<kwd>Normal</kwd>
<kwd>Ventricular</kwd>
<kwd>Tachycardia</kwd>
<kwd>Heart</kwd>
<kwd>Normal</kwd>
</kwd-group>
</article-meta>
</front>
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<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 pub-id-type="pid">S1409-414220020002</journal-id>
<journal-title>Revista Costarricense de Cardiología</journal-title>
<abbrev-journal-title>Rev. costarric. cardiol</abbrev-journal-title>
<issn>1409-4142</issn>
<publisher>
<publisher-name>Asociación Costarricense de Cardiología</publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1409-41422002000200003</article-id>
<title-group>
<article-title xml:lang="es">Terapia de resincronización cardíaca por la vía endovenosa en el tratamiento de la insuficiencia cardíaca refractaria: experiencia inicial en Costa Rica</article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname>Araya Gómez</surname>
<given-names>Vivien</given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname>Calderón Calvo</surname>
<given-names>Carlos</given-names>
</name>
<xref ref-type="aff" rid="A02"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution>,CCSS Hospital San Juan de Dios </institution>
<addr-line>San José </addr-line>
<country>Costa Rica</country>
</aff>
<aff id="A02">
<institution>,CCSS Hospital San Juan de Dios </institution>
<addr-line>San José </addr-line>
<country>Costa Rica</country>
</aff>
<pub-date pub-type="pub">
<month>08</month>
<year>2002</year>
</pub-date>
<pub-date pub-type="epub">
<year>2002</year>
</pub-date>
<volume>4</volume>
<fpage>16</fpage>
<lpage>20</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http:/www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S1409-41422002000200003&amp;lng=en&amp;nrm=iso&amp;tlng=en"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S1409-41422002000200003&amp;lng=en&amp;nrm=iso&amp;tlng=en"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S1409-41422002000200003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p>Introducción: La estimulación en ambos ventrículos (biventricular) mediante un marcapaso especial es una nueva técnica utilizada para el tratamiento de la insuficiencia cardiaca (ICC) refractaria. Presentamos los resultados del implante y seguimiento de los primeros cuatro resincronizadores colocados en Costa Rica por vía transvenosa. Material y Método: Los cuatro pacientes fueron hombres, con una edad promedio de 66 años. Dos de ellos estaban en clase funcional (NYHA) IV y los otros dos en clase IIl. La principal patología de fondo fue cardiopatía isquémica en tres pacientes y míocardiopatía dilatada idiopática en un paciente. El diámetro diastólico del ventrículo izquierdo (DDVI) promedio fue de 63 mm. La duración del procedimiento de implante fue de 5.5 horas (máximo 7 horas y mínimo 4 horas), el 85% de ese tiempo se empleó en la colocación del cable para estimulación del ventriculo izquierdo a través del seno coronario. El promedio de seguimiento posterior a la colocación de estos dispositivos fue de 6 meses. Resultados: Desde los 3 meses post-implante todos los pacientes mejoraron su clase funcional (tres pasaron a clase (II y uno a clase l). La fracción de expulsión (FE) promedio antes del implante fue de 25% y a los 3 meses fue de 33%, la duración del QRS espontáneo en promedio fue de 135 mseg y al activar la estimulación biventricular fue de 95 mseg. No se registró ninguna complicación. Conclusiones: La resincronización ventrícular es una nueva modalidad terapéutica que ya tenemos a la disposición en nuestro medio para el manejo de algunos pacientes en ICC resistentes al tratamiento médico, los resultados clínicos son muy alentadores ya que se muestra mejoría en algunos parámetros hemodinámicos y principalmente en los índices de calidad de vida.</p></abstract>
<abstract abstract-type="short" xml:lang="en"><p>lntrodution: Biventricular pacing is a new therapy for patients with congestive heart failure. We present the results of the implantation and follow of the first four patients with cardiac transvenous resynchronization in Costa Rica. Methods: All the patients was men, the age was 66 years in average. Two of them was in funcional class IV and the others in class III. The principal etiology was isquemic heart disease. The end diastolic VI diameter in average was 63 mm. The follow-up in average was 6 months. Results: From the 3 months after implantation all the patients improve their funcional class and their ejection fradion (25% to 33%). The QRS width was 135 msec before and 95 msec after the resynchronization. There no were complications. Clonclusion: The ventricular resynchronization is a new therapy that we have now in our country, for some patients with cardiac heart failure.</p></abstract>
<kwd-group>
<kwd>Resincronización</kwd>
<kwd>Cardíaca</kwd>
<kwd>Insuficiencia Cardíaca</kwd>
<kwd>Refractaria</kwd>
<kwd>Resynchronization</kwd>
<kwd>Heart Failure</kwd>
</kwd-group>
</article-meta>
</front>
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