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1.
Arch. cardiol. Méx ; 86(3): 196-202, jul.-sep. 2016. tab, graf
Article in Spanish | LILACS | ID: biblio-838375

ABSTRACT

Resumen Objetivo La enfermedad de Kawasaki (EK) es una vasculitis sistémica cuya complicación más grave es la formación de lesiones coronarias, las cuales pueden llevar a infarto del miocardio y muerte súbita. El estudio ecocardiográfico es parte del seguimiento obligado de los pacientes con EK. La deformación sistólica longitudinal (DSL) medida mediante speckle tracking es una herramienta precisa para evaluar la función de la fibra miocárdica (longitudinal) del ventrículo izquierdo. No se ha establecido la utilidad en la práctica clínica de la DSL en niños con antecedente de EK. El objetivo de este estudio fue analizar si la presencia de lesiones coronarias condiciona alteraciones en la DSL segmentaria y su correspondencia con el territorio coronario en donde se encuentra la lesión. Método Serie de casos. Se realizó un estudio ecocardiográfico completo y la evaluación de la DSL a niños con antecedente de EK al menos 6 meses después de la fase aguda. Resultados Se estudiaron 9 pacientes. La mediana de edad fue de 6 años (mínimo 2 y máximo 17). El 56% era de sexo masculino. El 77% presentó aneurismas coronarios. La DSL resultó alterada en el 56% de la muestra estudiada. Dentro de los pacientes que presentaron una DSL anormal, todos mostraron aneurismas coronarios y lesiones estenóticas u oclusivas demostradas mediante cateterismo de arterias coronarias, además de alteraciones de la perfusión miocárdica en estudio de Medicina Nuclear. Conclusiones En la muestra estudiada, los pacientes en quienes se encontró una DSL anormal, resultaron tener lesiones coronarias que condicionaban isquemia o infarto.


Abstract Objective Kawasaki disease (KD) is a systemic vasculitis that affects young children. Coronary artery aneurisms, ectasia and stenosis are its main complications and may lead to ischemic heart disease or sudden death. Echocardiography evaluation it's mandatory in all patients with history of KD. Left ventricular longitudinal systolic strain (LVLSS) measured by speckle tracking it's an accurate tool to evaluate global and segmental left ventricle mechanics. Clinical utility of LVLSS in children with KD hasn't been established. The goal of this study was to analyse if the presence of coronary lesions alters segmental LVLSS and if there is a relationship with the affected coronary territory. Method Case series. A complete transthoracic echocardiography with LVLSS was performed in children with history of KD with at least 6 months after the acute phase. Results Nine patients where studied, with a median age of 6 years (minimum 2 and maximum 17). A percentage of 56 were male, and 77% had coronary aneurisms. An abnormal LVLSS was found in 56% of the population studied. All of the patients that had an abnormal LVLSS had coronary aneurisms with stenosis or complete occlusion confirmed by invasive coronary angiography and abnormal Nuclear Medicine perfusion scans. Conclusions On the population studied, all patients with an abnormal LVLSS had obstructive coronary lesions and ischemic heart disease.


Subject(s)
Humans , Male , Female , Child, Preschool , Child , Adolescent , Coronary Artery Disease/etiology , Heart Ventricles/pathology , Mucocutaneous Lymph Node Syndrome/complications , Mucocutaneous Lymph Node Syndrome/pathology , Systole , Echocardiography , Cross-Sectional Studies
2.
Arch. cardiol. Méx ; 79(supl.2): 63-70, dic. 2009.
Article in Spanish | LILACS | ID: lil-565562

ABSTRACT

Heart failure is one of the most prevalent diseases in industrialized countries. Up to 30% of the patients with advanced heart failure present disturbances in intra-ventricular conduction, and this produce asynchrony of ventricular contractility, leading to further deterioration in heart function. Cardiac resynchronization (TRC) is an increasingly important therapeutic option for a subgroup of patients with heart failure. Several methods have been show to be useful in study the mechanical asynchrony. However, there are discrepancies between the results of the different methods. The echocardiography provides the best parameters in predicting a good response.


Subject(s)
Humans , Heart Failure , Heart Failure , Patient Selection , Ventricular Dysfunction , Ventricular Dysfunction , Cardiac Pacing, Artificial , Treatment Outcome
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