目的探索心区交感神经阻滞，能否改善扩张型心肌病的舒张功能。
Objective to investigate if diastolic function could be improved by cardiac sympathetic nerve blockade in patients with dilated cardiomyopathy (DCM).
目的观察心区交感神经阻滞对严重心力衰竭患者左心室舒张功能的影响。
Objective to investigate the effects of cardiac sympathetic blockade on left ventricular diastolic function in patients with dilated cardiomyopathy and severe heart failure (HF).
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