<?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>0138-6557</journal-id>
<journal-title><![CDATA[Revista Cubana de Medicina Militar]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. cuban. med. mil.]]></abbrev-journal-title>
<issn>0138-6557</issn>
<publisher>
<publisher-name><![CDATA[Centro Nacional de Información de Ciencias MédicasEditorial Ciencias Médicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0138-65572023000400014</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[N-terminal pro-B-type Natriuretic peptide levels and left atrial appendage thrombosis in patients with persistent atrial fibrillation]]></article-title>
<article-title xml:lang="es"><![CDATA[Niveles de péptido natriurético N-terminal pro-B y trombosis de la orejuela auricular izquierda en pacientes con fibrilación auricular persistente]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Chien]]></surname>
<given-names><![CDATA[Do Van]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Huyen]]></surname>
<given-names><![CDATA[Dang Trang]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nguyen Son]]></surname>
<given-names><![CDATA[Dang Pham]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Minh]]></surname>
<given-names><![CDATA[Luu Quang]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,108 Central Military Hospital Department of Cardiology ]]></institution>
<addr-line><![CDATA[ Hanoi]]></addr-line>
<country>Vietnam</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,286 Military Hospital  ]]></institution>
<addr-line><![CDATA[ Hue]]></addr-line>
<country>Vietnam</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>52</volume>
<numero>4</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0138-65572023000400014&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0138-65572023000400014&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0138-65572023000400014&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT  Introduction: In hospitalized patients, atrial fibrillation is the most common arrhythmia, and leading cause of cardio-embolic stroke.  Objective: To evaluate the association between N-terminal b-type natriuretic peptide pro (NT-proBNP) and left atrial appendage thrombus in persistent atrial fibrillation patients.  Methods:  A cross-sectional study, enrolled 139 patients with persistent non-valvular atrial fibrillation. Transthoracic and trans-esophageal echocardiographs were performed in all patients.  Results:  Mean age was 70.5 ( 10.6 years, 80.6% male. In patients with LAAT, NT-proBNP was positively correlated with left ventricular end diastolic diameter (LVEDD) (r=0.345), left ventricular end-systolic diameter (LVEDS) (r= 0.449), E/e&#8217; (r=0.445), and left atrial spontaneous echo contrast (LA SEC) (r=0.478), and negatively correlated with left ventricular ejection fraction (LVEF) (r=-0.473), left atrial strain (r= -0.301), strain rate (r= -0.283), and e&#8217;(r= -0.458). In patients without LAAT, NT-proBNP was positively correlated with LVEDD (r= 0.333), LVESD (r= 0.358), E (r= 0.318), E/e&#8217; (r= 0.411), left atrial volume index (LAVI) (r= 0.421), and negatively correlated with LVEF (r= -0.307). Plasma NT-proBNP (&gt; 1279 pg/mL) could be used to predict LAAT (AUC= 0.639; Se= 67.7%, Sp= 60.2%). In patients with ejection fraction &gt; 50%, the cutoff value of NT-proBNP to predict LAAT was 1325 pg/mL (AUC= 0.572; Se= 57.9%, Sp= 78.3%). Multiple logistic regression analysis showed that prior stroke, E/e&#8217; index, and NT-proBNP correlated with LAAT (r= 0.887; p&lt; 0.001; r= -0.092, p= 0.035 and 0.022; p= 0.004, respectively).  Conclusion: Plasma NT-proBNP levels and E/e&#8217; index are associated with LAAT in patients with persistent atrial fibrillation.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN  Introducción: En pacientes hospitalizados, la fibrilación auricular es la arritmia más común y causa principal de ictus cardioembólico.  Objetivo:  Evaluar la asociación entre el péptido natriurético NT proBNP y el trombo en la orejuela auricular izquierda en pacientes con fibrilación auricular persistente.  Métodos: Se reclutaron prospectivamente 139 pacientes con fibrilación auricular no valvular persistente. Se realizaron ecocardiografías transtorácicas y transesofágicas en todos los pacientes.  Resultados:  Edad media, 70,5±10,6 años; 80,6 % hombres. En pacientes con LAAT, NT-proBNP correlacionó positivamente con el diámetro telediastólico del ventrículo izquierdo (DDVI) (r=0,345), diámetro sistólico final del ventrículo izquierdo (DSVI) (r=0,449), E/e' (r=0,445) y contraste de eco espontáneo auricular izquierdo (LA SEC) (r=0,478), y negativamente con la fracción de eyección del ventrículo izquierdo (FEVI) (r=-0,473), tensión auricular izquierda (r=-0,301), tasa de tensión (r=0,283) y e' (r=-0,458). En pacientes sin LAAT, NT-proBNP correlacionó positivamente con LVEDD (r= 0,333), LVESD (r=0,358), E (r=0,318), E/e' (r=0,411), índice de volumen auricular izquierdo (LAVI) (r=0,421), y negativamente con FEVI (r=-0,307). NT-proBNP plasmático (&gt;1279 pg/mL) podría usarse para predecir LAAT (AUC=0,639; Se=67,7 %, Sp=60,2 %). En pacientes con fracción de eyección &gt;50 %; valor de corte de NT-proBNP para predecir LAAT fue 1325 pg/mL (AUC=0,572; Se=57,9 %, Sp=78,3 %). Según regresión logística múltiple, el accidente cerebrovascular previo, el índice E/e&#8217; y NT-proBNP se correlacionaron con LAAT (r=0,887; p&lt;0,001; r=0,092, p=0,035 y 0,022; p=0,004, respectivamente).  Conclusiones:  Los niveles plasmáticos de NT-proBNP y el índice E/e' se asocian con el OAI en pacientes con FA persistente.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[left atrial appendage]]></kwd>
<kwd lng="en"><![CDATA[thrombosis]]></kwd>
<kwd lng="en"><![CDATA[atrial fibrillation]]></kwd>
<kwd lng="es"><![CDATA[NT-proBNP]]></kwd>
<kwd lng="es"><![CDATA[orejuela auricular izquierda]]></kwd>
<kwd lng="es"><![CDATA[trombosis]]></kwd>
<kwd lng="es"><![CDATA[fibrilación auricular]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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