Similarly, postoperative QRS duration correlated closely with change of LV ejection fraction ( r = −0.417, P = 0.005) and change of QRS duration correlated with change of LV ejection fraction (LVEF) ( r = −0.278, P = 0.064) with marginal significance ( Figure 3 C and 3 D ).
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Effects of septal myectomy on left atrial and left ventricular function in obstructive hypertrophic cardiomyopathy.
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