The Use of Epicardial Electrogram as a Simple Guide to Select the Optimal Site of Left Ventricular Pacing in Cardiac Resynchronization Therapy

Table 3

Multivariate predictors of response to CRT.

	OR	(95% CI)	P
SR at implant	1.3	0.2–10.1	.80
NIDCM	1.3	0.4–4.4	.69
LVEF	1.08	1.002–1.17	.045
Ratio of ED/QRS duration ≥0.83	6.8	1.7–27.5	.007

Abbreviations used: OR: odds ratio, CI: confidence interval, SR: sinus rhythm, NIDCM: nonischemic dilated cardiomyopathy, LVEF: left ventricular ejection fraction, ED: electrical delay.