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3.
Article in Spanish | CUMED | ID: cum-79373

ABSTRACT

RESUMEN: La ateroesclerosis es una enfermedad sistémica que afecta múltiples lechos vasculares. Después de períodos prolongados de progresión comienzan las manifestaciones clínicas, de forma aguda o crónica (infarto agudo de miocardio, angina estable, claudicación intermitente, enfermedad cerebrovascular, entre otras); por lo que puede cursar de manera subclínica en pacientes con enfermedad arterial coronaria. Lo interesante de esta forma de presentación es que dentro de una serie de casos con enfermedad multivaso, asociado a un índice tobillo-brazo (ITB) < 0,9, después de un síndrome coronario agudo, hemos encontrado, como hallazgo angiográfico, la presencia de una fístula coronaria a ventrículo derecho en un paciente con ITB muy bajo y clínica de claudicación intermitente. Esta fístula es la causa de los síntomas que interrumpieron la rehabilitación cardiovascular; es una enfermedad poco frecuente y causa de dolor torácico, que se informa solo de 0,3 a 0,8 porciento, como hallazgo incidental en angiografías coronarias.[AU]


Subject(s)
Humans , Vascular Fistula , Coronary Angiography , Peripheral Arterial Disease , Rehabilitation
4.
MEDICC Review ; 21(2-3)Apr–Jul 2019.
Article in English | CUMED | ID: cum-79368

ABSTRACT

INTRODUCTION Many clinical settings lack the necessary resourc-es to complete angiographic studies, which are commonly used topredict complications and death following acute coronary syndrome.Corrected QT-interval dispersion can be useful for assessing risk ofmyocardial infarction recurrence.OBJECTIVE Evaluate the relationship between corrected QT-intervaldispersion and recurrence of myocardial infarction in patients with ST-segment elevation.METHODS We conducted a prospective observational study of 522patients with ST-segment elevation myocardial infarction admitted con-secutively to the Camilo Cienfuegos General Provincial Hospital in SanctiSpiritus, Cuba, from January 2014 through June 2017. Of these, 476were studied and 46 were excluded because they had other disorders.Demographic variables and classic cardiovascular risk factors were in-cluded. Blood pressure, heart rate, blood glucose, and corrected and un-corrected QT-interval duration and dispersion were measured. Patientswere categorized according to the Killip-Kimball classification. Associa-tion between dispersion of the corrected QT-interval and recurrence ofinfarction was analyzed using a binary logistic regression model, a re-gression tree and receiver operator characteristic curves.RESULTS Patients with recurrent infarction (56; 11.8%) had higheraverage initial blood glucose values than those who did not haverecurrence; the opposite occurred for systolic and diastolic bloodpressure and for left ventricular ejection fraction. Dispersion of thecorrected QT-interval was a good predictor of infarction recurrence ac-cording to a multivariate analysis (OR = 3.09; 95% CI = 1.105–8.641;p = 0.032). Cardiac arrest is the variable that best predicts recurrence.No recurrence of infarction occurred in 97% of patients without car-diac arrest, left ventricular ejection fraction >45% and corrected QT-interval dispersion <80 ms.[AU]


Subject(s)
Humans , Myocardial Infarction , Electrocardiography
5.
Med. intensiva (Madr., Ed. impr.) ; 41(6): 347-355, ago.-sept. 2017. tab, graf
Article in Spanish | IBECS | ID: ibc-165508

ABSTRACT

Objetivo: Determinar la relación entre duración y dispersión del QRS con la aparición de arritmias ventriculares en las fases iniciales del infarto agudo de miocardio (IAM). Diseño: Estudio descriptivo retrospectivo longitudinal. Ámbito: Hospital General Universitario ‘Camilo Cienfuegos’ de Sancti Spíritus, Cuba. Atención secundaria. Pacientes o participantes: Doscientos nueve pacientes con diagnóstico de IAM con elevación del segmento ST entre enero de 2012 y junio de 2014. Variables principales de interés: Se midieron la duración y dispersión del QT, QTc y QRS del primer electrocardiograma hospitalario y se determinó la presencia de taquicardia/fibrilación ventricular en el seguimiento (estancia hospitalaria). Resultados: Se detectaron arritmias en 46 pacientes (22%), en 25 (15,9%) estas fueron ventriculares; más frecuentes en el IAM anterior extenso, que fue responsable del 81,8% de las fibrilaciones ventriculares y más de la mitad (57,1%) de las taquicardias ventriculares. La duración del QRS (77,3±13,3 vs. 71,5±6,4ms; p=0,029) y su dispersión (24,1±16,2 vs. 16,5±4,8ms; p=0,019) fue superior en las derivaciones afectadas por la isquemia. Los mayores valores de todas las mediciones se presentaron, con diferencia significativa, en el IAM anterior extenso: QRS 92,3±18,8ms, dQRS 37,9±23,9ms, QTc 518,5±72,2ms y dQTc 94,9±26,8ms. Los pacientes con mayores valores de dispersión del QRS tuvieron más probabilidad de presentar arritmias ventriculares, con puntos de corte de 23,5ms para la taquicardia y de 24,5ms para la fibrilación ventricular. Conclusiones: El incremento de la duración y dispersión del QRS mostró mayor probabilidad de aparición de arritmias ventriculares en las fases iniciales del IAM que los incrementos del intervalo QTc y su dispersión (AU)


Objective: To determine the relationship between QRS duration and dispersion and the occurrence of ventricular arrhythmias in early stages of acute myocardial infarction (AMI). Design: A retrospective, longitudinal descriptive study was carried out. Setting: Hospital General Universitario ‘Camilo Cienfuegos”, Sancti Spíritus, Cuba. Secondary health care. Patients or participants: A total of 209 patients diagnosed with ST-segment elevation AMI from January 2012 to June 2014. Main variables of interest: The duration and dispersion of the QT interval, corrected QT interval, and QRS complex were measured in the first electrocardiogram performed at the hospital. The presence of ventricular tachycardia/fibrillation was assessed during follow-up (length of hospital stay). Results: Arrhythmias were found in 46 patients (22%); in 25 of them (15.9%), arrhythmias originated in ventricles, and were more common in those subjects with extensive anterior wall AMI, which was responsible for 81.8% of the ventricular fibrillations and more than half (57.1%) of the ventricular tachycardias. The widest QRS complexes (77.3±13.3 vs. 71.5±6.4ms; P=.029) and their greatest dispersion (24.1±16.2 vs. 16.5±4.8ms; P=.019) were found on those leads that explore the regions affected by ischemia. The highest values of all measurements were found in extensive anterior wall AMI, with significant differences: QRS 92.3±18.8ms, QRS dispersion 37.9±23.9ms, corrected QT 518.5±72.2ms, and corrected QT interval dispersion 94.9±26.8ms. Patients with higher QRS dispersion values were more likely to have ventricular arrhythmias, with cutoff points at 23.5ms and 24.5ms for tachycardia and ventricular fibrillation, respectively. Conclusions: Increased QRS duration and dispersion implied a greater likelihood of ventricular arrhythmias in early stages of AMI than increased duration and dispersion of the corrected QT interval (AU)


Subject(s)
Humans , Critical Care/methods , Myocardial Infarction/epidemiology , Long QT Syndrome/physiopathology , Longitudinal Studies , Arrhythmias, Cardiac/physiopathology , Myocardial Infarction/physiopathology , Electrocardiography
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