Medicina

Biventricular arrhythmogenic cardiomyopathy and left dominant arrhythmogenic cardiomyopathy forms had recently been included in the spectrum of arrhythmogenic cardiomyopathy. The aim of the study was to describe, using cardiovascular magnetic resonance, the patterns of ventricular involvement as well as late gadolinium enhancement in these conditions.

Background: Cardiac allograft vasculopathy (CAV) is the major cause of late death in patients undergoing heart transplantation (HT). The most validated method for its diagnosis is intravascular ultrasound (IVUS), and there are no sufficiently reliable non-invasive methods. von Willebrand factor (vWF) is a marker of endothelial dysfunction/activity that is rarely studied in the context of CAV. The purpose of this study was to determine whether patients with higher levels of vWF in the first year post-transplant will develop a greater degree of CAV.

This trial evaluated the efficacy and safety of the combination of antiplatelet and moderateintensity anticoagulation therapy in patients with atrial fibrillation associated with recognized risk factors or mitral stenosis. BACKGROUND Warfarin was more effective than aspirin in preventing stroke in these patients; combined therapy with low anticoagulant intensity was ineffective. Mitral stenosis patients were not investigated.

Background: Dilated cardiomyopathy (DCM) is a public health problem with no available curative treatment, and mitochondrial dysfunction plays a critical role in its development. The present study is the first to analyze the mitochondrial proteome in cardiac tissue of patients with DCM to identify potential molecular targets for its therapeutic intervention.

Aims The randomized NASPEAF study included non-valvular with prior embolism and mitral stenosis patients in the same group. This is a sub-study to specially focus on the antithrombotic therapy in mitral stenosis. Methods and results We analysed 311 patients with mitral stenosis, compared with 175 non-valvular atrial fibrillation patients with prior embolism, stratified by a history of previous embolism and

Introducción y objetivos. Actualmente, el impacto de la diabetes mellitus en los pacientes con trasplante cardiaco es controvertido y su efecto sobre la mortalidad y otras complicaciones, como las infecciones y los rechazos, no está completamente aclarado. El objetivo de este estudio es analizar estos efectos en nuestra población de pacientes trasplantados.

Introducción y objetivos. La coronariografía no invasiva mediante tomografía computarizada con 16 detectores es una herramienta diagnóstica de reciente aparición cuya fiabilidad está por determinar. El objetivo del presente estudio es la comparación entre esta técnica y la coronariografía invasiva.

El síndrome de apneas e hipopneas del sueño (SAHS) conlleva importantes repercusiones cardiacas que se pueden evaluar mediante métodos no invasivos como la ecocardiografía transtorácica; sin embargo, está por dilucidar si se deben a la propia enfermedad o a la influencia de factores concomitants como la hipertensión arterial (HTA). El objetivo de este estudio es analizar las alteraciones ecocardiográficas en pacientes con SAHS y si se modifican en caso de HTA concomitante.Estudiamos a 103 pacientes consecutivos diagnosticados de SAHS e indicación de presión positive continua en la vía aérea (HTA, 49 pacientes; sin HTA, 54) frente a 24 controles ajustados por edad e índice de masa corporal. Realizamos ecocardiograma-Doppler por un observador para el que la asignación estaba enmascarada. Analizamos variables morfológicas (grosor de paredes y diámetros) y funcionales (fracción de eyección, velocidad máxima de ondas E y A, tiempo de deceleración mitral e índice Tei). Se compararon los resultados mediante ANOVA y test de Bonferroni.Los pacientes hipertensos tuvieron más alteraciones morfológicas tipo hipertrofia ventricular izquierda (mayor grosor de septo y pared posterior) que los no hipertensos, y éstos más que los controles. Grosor del septo: SAHS-HTA (1), 12 ± 2; SAHS sin HTA (2), 11 ± 2, y controles (3), 9,5 ± 5 mm (1 frente a 2, p = 0,038; 1 frente a 3, p = 0,0001, y 2 frente a 3, p = 0,034). Pared posterior: SAHS-HTA, 11 ± 2; SAHS sin HTA, 10 ± 1, y controles, 9 ± 1,5 mm (1 frente a 2, p = 0,5; 1 frente a 3, p = 0,0001, y 2 frente a 3, p = 0,001). También hubo más alteraciones en el patrón de llenado ventricular izquierdo (SAHS-HTA, 92%; SAHS sin HTA, 72%, y controles, 29%; p = 0,0001) y derecho (SAHS-HTA, 72%; SAHS sin HTA, 58%, y controles, 25%; p = 0,001). Los valores del índice Tei del VI tuvieron tendencia a incrementarse (SAHS-HTA, 0,56 ± 0,2; SAHS sin HTA, 0,54 ± 0,12, y controles, 0,5 ± 0,1; 1 frente a 2, p = 0,8; 1 frente a 3, p = 0,09; 2 frente a 3, p = 0,7).El SAHS presenta signos de hipertrofia ventricular izquierda y alteración del llenado biventricular aun en ausencia de HTA concomitante, y desde el momento de su diagnóstico. Las alteraciones detectadas son mayores cuando se asocia HTA.Sleep apnea-hypopnea syndrome (SAHS) is associated with significant effects on the heart, which can be assessed using noninvasive methods such as transthoracic echocardiography. However, it is not clear whether these effects are due to the condition itself or are influenced by associated factors, such as high blood pressure (HBP). The objective of this study was to investigate the echocardiographic alterations observed in SAHS patients and how they are affected by the presence of concomitant HBP.The study involved 103 consecutive patients (49 with HBP and 54 without) with SAHS and an indication for continuous positive airways pressure treatment and 24 controls matched for age and body mass index. Doppler echocardiography was performed in a blinded manner. Both morphology (i.e., wall thickness, and diameters) and function (i.e., ejection fraction, peak E and A wave velocities, mitral deceleration time, and Tei index) were assessed. Results were compared using ANOVA and Bonferroni's test.Hypertensive patients had larger morphological changes characteristic of left ventricular hypertrophy (i.e., increased septal and posterior wall thicknesses) than nonhypertensive patients, who in turn had larger changes than controls (septal thickness: HBP-SAHS, 12 [2] mm; non-HBP SAHS, 11 [2] mm, and controls, 9.5 [5] mm; 1 vs. 2, P=.038; 1 vs. 3, P=.0001, 2 vs. 3, P=.034) (posterior wall thickness: HBP-SAHS, 11 [2] mm; non-HBP SAHS, 10 [1] mm, and controls, 9 [1.5] mm; 1 vs. 2, P=.5; 1 vs. 3,P=.034) (posterior wall thickness: HBP-SAHS, 11 [2] mm; non-HBP SAHS, 10 [1] mm, and controls, 9 [1.5] mm; 1 vs. 2, P=.5; 1 vs. 3, P=.0001; 2 vs. 3, P=.001). In addition, there were also greater changes in ventricular filling patterns on the left (HBP-SAHS, 92%; non-HBP SAHS, 72%, controls, 29%; P=.0001) and on the right (HBP-SAHS, 72%; non-HBP SAHS, 58%; controls, 25%; P=.001). There was a trend towards a larger left ventricular Tei index (HBP-SAHS, 0.56 [0.2]; non-HBP SAHS, 0.54 [0.12]; controls, 0.5 [0.1]; 1 vs. 2, P=.8; 1 vs. 3, P=.09; 2 vs. 3, P=.7).From the time of diagnosis, SAHS was associated with left ventricular hypertrophy and impaired biventricular filling, even in the absence of concomitant HBP. The abnormalities observed were more severe when HBP was present.