<?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>1657-9534</journal-id>
<journal-title><![CDATA[Colombia Médica]]></journal-title>
<abbrev-journal-title><![CDATA[Colomb. Med.]]></abbrev-journal-title>
<issn>1657-9534</issn>
<publisher>
<publisher-name><![CDATA[Universidad del Valle]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1657-95342023000400003</article-id>
<article-id pub-id-type="doi">10.25100/cm.v54i4.5850</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Cardiac resynchronization therapy in acute heart failure and left bundle-branch block in a real-life registry]]></article-title>
<article-title xml:lang="es"><![CDATA[Terapia de resincronización cardiaca en insuficiencia cardiaca aguda y bloqueo de rama izquierda en un registro real]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguiló]]></surname>
<given-names><![CDATA[Oriol]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Trullàs]]></surname>
<given-names><![CDATA[Joan Carles]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Espinosa]]></surname>
<given-names><![CDATA[Begoña]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A6"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Ayala]]></surname>
<given-names><![CDATA[Pedro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A9"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gil]]></surname>
<given-names><![CDATA[Víctor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Grima]]></surname>
<given-names><![CDATA[María Luisa]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrero-Puente]]></surname>
<given-names><![CDATA[Pablo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jacob]]></surname>
<given-names><![CDATA[Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A14"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[López-Díez]]></surname>
<given-names><![CDATA[María Pilar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Garrido]]></surname>
<given-names><![CDATA[José Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Millán]]></surname>
<given-names><![CDATA[Javier]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Aguirre]]></surname>
<given-names><![CDATA[Alfons]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Piñera]]></surname>
<given-names><![CDATA[Pascual]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Müller]]></surname>
<given-names><![CDATA[Christian E.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A9"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Llorens]]></surname>
<given-names><![CDATA[Pere]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A a"/>
<xref ref-type="aff" rid="A6"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Miro]]></surname>
<given-names><![CDATA[Òscar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
<xref ref-type="aff" rid="A0"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hospital d'Olot i Comarcal de la Garrotxa Emergency Department ]]></institution>
<addr-line><![CDATA[Girona Catalonia]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Institut de Recerca i Innovació en Ciències de la Vida i de la Salut a la Catalunya Central Tissue Repair and Regeneration Laboratory (TR2Lab) ]]></institution>
<addr-line><![CDATA[Girona Catalonia]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Hospital d'Olot i Comarcal de La Garrotxa Internal Medicine Department ]]></institution>
<addr-line><![CDATA[Girona Catalonia]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Hospital General de Alicante Emergency Department Short Stay Unit and Hospitalization at Home Unit]]></institution>
<addr-line><![CDATA[Alicante ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Instituto de Investigación Sanitaria y Biomédica de Alicante  ]]></institution>
<addr-line><![CDATA[Alicante ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Universidad Miguel Hernández  ]]></institution>
<addr-line><![CDATA[Alicante ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="Af7">
<institution><![CDATA[,University Hospital of Basel Cardiology Department ]]></institution>
<addr-line><![CDATA[Basel ]]></addr-line>
<country>Switzerland</country>
</aff>
<aff id="Af8">
<institution><![CDATA[,Cardiovascular Research Institute Basel  ]]></institution>
<addr-line><![CDATA[Basel ]]></addr-line>
<country>Switzerland</country>
</aff>
<aff id="Af9">
<institution><![CDATA[,The GREAT network  ]]></institution>
<addr-line><![CDATA[Rome ]]></addr-line>
<country>Italy</country>
</aff>
<aff id="A10">
<institution><![CDATA[,University of Barcelona Emergency Department Hospital Clínic]]></institution>
<addr-line><![CDATA[Barcelona Catalonia]]></addr-line>
<country>Spain</country>
</aff>
<aff id="A11">
<institution><![CDATA[,Hospital Doctor Peset Emergency Department ]]></institution>
<addr-line><![CDATA[Valencia ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="A12">
<institution><![CDATA[,Hospital Universitario Central de Asturias Emergency Department ]]></institution>
<addr-line><![CDATA[Oviedo ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="A13">
<institution><![CDATA[,Hospital Universitari de Bellvitge Emergency Department ]]></institution>
<addr-line><![CDATA[Barcelona Catalonia]]></addr-line>
<country>Spain</country>
</aff>
<aff id="A14">
<institution><![CDATA[,l&#8217;Hospitalet de Llobregat  ]]></institution>
<addr-line><![CDATA[Barcelona Catalonia]]></addr-line>
<country>Spain</country>
</aff>
<aff id="A15">
<institution><![CDATA[,Hospital Universitario de Burgos Emergency Department ]]></institution>
<addr-line><![CDATA[Burgos ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="A16">
<institution><![CDATA[,Hospital Virgen de Valme Emergency Department ]]></institution>
<addr-line><![CDATA[Sevilla ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="A17">
<institution><![CDATA[,Hospital Politécnico La Fe Emergency Department ]]></institution>
<addr-line><![CDATA[Valencia ]]></addr-line>
<country>Spain</country>
</aff>
<aff id="A18">
<institution><![CDATA[,Hospital del Mar Emergency Department ]]></institution>
<addr-line><![CDATA[Barcelona Catalonia]]></addr-line>
<country>Spain</country>
</aff>
<aff id="A19">
<institution><![CDATA[,Hospital Universitario Reina Sofía Emergency Department ]]></institution>
<addr-line><![CDATA[Murcia ]]></addr-line>
<country>Spain</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2023</year>
</pub-date>
<volume>54</volume>
<numero>4</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S1657-95342023000400003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S1657-95342023000400003&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S1657-95342023000400003&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Objectives: To determine the prevalence, characteristics, timing of implementation and prognosis of patients with left bundle branch block (LBBB) and acute heart failure (AHF) treated with cardiac resynchronization therapy (CRT) in a real-life registry.  Methods: We analysed the characteristics of patients with AHF and LBBB at the time of inclusion in the EAHFE (Epidemiology Acute Heart Failure Emergency) cohort to determine the indication for CRT, the timing of implementation and its impact on 10-year all-cause mortality.  Results:  729 patients with a median age of 82 years and there was a high burden of comorbidities and functional dependence. The median left-ventricle ejection fraction (LVEF) was 40%. Forty-six (6%) patients were treated with CRT at some point during follow-up, with a median time of delay for CRT implementation of 960 (IQR=1,147 days) and at least 108 more untreated patients fulfilled criteria for CRT. Patients receiving CRT were younger, had different comorbidities, less functional dependence (higher Barthel index) and lower LVEF values. The median follow-up was 5.7 years (95% CI: 5.6-5.8) and CRT was not associated with changes in 10-year mortality (adjusted HR 1.33, 95% CI: 0.72-2.48; p-value 0.4). When compared with untreated patients fulfilling criteria for CRT, very similar results were observed (adjusted HR 1.34, 95% CI: 0.67-2.68).  Conclusions: CRT implementation was delayed and underused in patients with AHF and LBBB. Under these circumstances, CRT is not associated with a reduction in all-cause mortality in the long term.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivos:  Determinar la prevalencia, características, momento de implantación y pronóstico de los pacientes con bloqueo de rama izquierda del haz de His (BRIHH) e insuficiencia cardiaca aguda (ICA) tratados con terapia de resincronización cardiaca (TRC) en un registro real.  Métodos:  Se analizaron las características de los pacientes con ICA y BRIHH en el momento de su inclusión en la cohorte EAHFE (Epidemiology Acute Heart Failure Emergency) para determinar la indicación de TRC, el momento de implantación y su impacto en la mortalidad por cualquier causa a 10 años.  Resultados:  729 pacientes con una mediana de edad de 82 años con una elevada carga de comorbilidades y dependencia funcional. La mediana de la fracción de eyección del ventrículo izquierdo (FEVI) fue del 40%. 46 pacientes (6%) fueron tratados con TRC en algún momento del seguimiento, con una mediana de tiempo de retraso para la implantación de la TRC de 960 dias (IQR=1,147 días) y al menos 108 pacientes no tratados cumplían criterios para TRC. Los pacientes que recibieron TRC eran más jóvenes, tenían comorbilidades diferentes, menor dependencia funcional (índice de Barthel más alto) y valores de FEVI más bajos. La mediana de seguimiento fue de 5.7 años (IC del 95%: 5.6-5.8) y la TRC no se asoció a cambios en la mortalidad a 10 años (HR ajustado: 1.33; IC del 95%: 0.72-2.48; p-valor 0.4). Cuando se comparó con pacientes no tratados que cumplían criterios para TRC, se observaron resultados muy similares (HR ajustado 1.34; IC del 95%: 0.67-2.68).  Conclusiones:  La implantación de la TRC se retrasó y se infrautilizó en pacientes con ICA y BRIHH. En estas circunstancias, la TRC no se asocia a una reducción de la mortalidad por cualquier causa a largo plazo.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[heart failure]]></kwd>
<kwd lng="en"><![CDATA[bundle-branch block]]></kwd>
<kwd lng="en"><![CDATA[cardiac resynchronization therapy]]></kwd>
<kwd lng="en"><![CDATA[mortality]]></kwd>
<kwd lng="es"><![CDATA[insuficiencia cardiaca]]></kwd>
<kwd lng="es"><![CDATA[bloqueo de rama]]></kwd>
<kwd lng="es"><![CDATA[terapia de resincronización cardiaca]]></kwd>
<kwd lng="es"><![CDATA[mortalidad]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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