Value of QRS duration predicting response of cardiac resynchronization therapy / 中国实用内科杂志

ABSTRACT

QRS wave duration is a main method of deciding cardiac asynchrony in patients with Cardiac resynchronization therapy(CRT).But cardiac mechanical dyssynchrony was not always consistent with electrical dyssynchrony.A few patients with widened QRS wave duration had not the cardiac mechanical asynchrony,while some patients with normal QRS wave duration had cardiac mechanical asynchrony.If the cardiac mechanical dyssynchrony was determined,it would be possible to reduce the non-response of CRT.We review the role of QRS duration to predicting the prognosis of CRT and debate the effect of QRS duration to CRT.