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KMID : 1011920120130030013
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International Journal of Arrhythmia
2012 Volume.13 No. 3 p.13 ~ p.16
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Optimization
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Cho Goo-Yeong
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Abstract
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Cardiac resynchronization therapy (CRT) has been a proven treatment strategy for most cases of medically refractory systolic heart failure. However, 30-40% of patients do not have clinical or echocardiographic improvement after CRT because of mechanical dyssynchrony, the presence of scar tissue, or failure to optimize lead position. Left ventricular (LV) performance after CRT can be influenced by programmed atrioventricular or ventriculoventricular (VV) optimization, and optimal atrioventricular or VV delay may be important to maximize the response in LV function. The present article briefly summarizes the various optimization methods and their drawbacks.
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KEYWORD
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cardiac resynchronization therapy, heart failure, optimization
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FullTexts / Linksout information
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