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BACKGROUND Chronic right ventricular apical (RVA) pacing can lead to an increased risk of heart failure. However, assessment of left ventricular mechanical dyssynchrony in the whole left ventricle(More)
STUDY OBJECTIVE Obstructive sleep apnea syndrome (OSAS) has been considered to be an important predisposing factor for cardiovascular disease. This study aims to investigate the impact of OSAS on(More)