Relation of systemic sympathetic nervous system activation to echocardiographic left ventricular size and performance and its implications in patients with mitral regurgitation.


We have previously demonstrated that the systemic sympathetic nervous system (SNS) is activated in proportion to an increase in cineventriculographic left ventricular (LV) end-systolic volume and decrease in ejection fraction (EF) in patients with chronic mitral regurgitation (MR). However, the relation between noninvasive echocardiographic measures of LV… (More)


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