Yu-Jia Liang

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UNLABELLED OBEJCTIVE: To compare left ventricular (LV) systolic performance and contractility in patients with heart failure and normal ejection fraction (HFNEF), compared with patients with heart failure and reduced ejection fraction (HFREF) and healthy subjects using newer echocardiographic techniques. DESIGN A case-control trial. SETTING University(More)
BACKGROUND This study adopted a new multi-layer approach of measuring myocardial deformation by two-dimensional (2D) speckle tracking imaging to examine whether a transmural gradient exists in normal subjects and cardiac diseases. METHODS Eighty patients were included with 20 in each group: (1) normal control; (2) acute coronary syndrome (ACS) with(More)
Organizing wireless ad hoc network into a clusterbased network architecture that requires the minimum number of cluster maintenance overheads not only reduces the waste of precious bandwidth but also conserves the consumption of the limited battery power. Analytical results show that the number of cluster maintenance overheads can be reduced by reducing the(More)
BACKGROUND Cardiac contractility modulation (CCM) is a new device-based therapy for advanced systolic heart failure with normal QRS duration and therefore not suitable for cardiac resynchronization therapy (CRT). Left ventricular (LV) reverse remodeling was reported in patients treated with CCM or CRT, however, the extent of response was not compared. (More)
OBJECTIVES The aim of this study was to evaluate the role of left ventricular (LV) mechanical dyssynchrony in heart failure with preserved ejection fraction (HFPEF) complicating acute coronary syndrome (ACS). BACKGROUND In systolic heart failure, LV mechanical dyssynchrony worsens cardiac function and cardiac resynchronization therapy improves clinical(More)
AIMS To examine whether the presence of pre-pacing functional mitral regurgitation (MR) and its improvement would affect the extent of left ventricular (LV) reverse remodelling after cardiac resynchronization therapy (CRT). METHODS AND RESULTS Echocardiographic assessment was performed in 83 patients before and 3 months after CRT. Total MR volume and the(More)
BACKGROUND The reproducibility of the measurement of mechanical dyssynchrony by echocardiography including Doppler tissue imaging has recently been questioned. The aim of this study was to ascertain the role of a dedicated training program to improve skills and the reproducibility of dyssynchrony assessment. METHODS In 70 patients with heart failure,(More)
BACKGROUND Community health service center (CHSC) in China is always regarded as a good facility of primary care, which plays an important role in chronic non-communicable disease management. This study aimed to investigate the blood pressure (BP) control rate in a real life CHSC-based management program and its determinants. METHODS The study enrolled(More)
BACKGROUND This study compared the prevalence and pattern of mechanical dyssynchrony in patients with normal heart and right ventricular apical (RVA) pacing versus patients with systolic heart failure (SHF) and spontaneous left bundle branch block (LBBB). METHODS A total of 112 patients having LBBB pattern on surface electrocardiogram were included (57(More)
AIMS The aim of this study was to assess the contribution of left ventricular (LV) systolic dyssynchrony to functional mitral regurgitation (MR). METHODS AND RESULTS Patients (n = 136) with LV systolic dysfunction (ejection fraction <50%) and at least mild MR were prospectively recruited. The effective regurgitant orifice area (EROA) was assessed by the(More)