Local electrogram delay recorded from left ventricular lead at implant predicts response to cardiac resynchronization therapy: Retrospective study with 1 year follow up

Table 3 Univariate and multivariate association between baseline factors and clinical, echocardiographic and biochemical CRT response

	Univariate analysis			Multivariate analysis (MODEL 1)			Multivariate analysis (MODEL 2)
Baseline variable	Clinical response	LV remodelling	BNP response	Clinical response	LV remodelling	BNP response	Clinical response	LV remodelling	BNP response
ICM/NICM	0.02	0.008	0.04	0.04	0.01	Ns	0.046	0.02	ns
QLV	<0.00001	<0.00001	0.0001	<0.00001	<0.00001	0.0001	-	-	-
QLV ratio	<0.00001	<0.00001	0.001	-	-	-	0.0004	<0.00001	0.01
QRSd	0.0005	0.002	0.003	ns	ns	Ns	0.04	ns	0.04
LVESD	0.01	0.0006	0.12	0.009	0.0002	Ns	0.01	0.0003	ns
LVEDD	0.03	0.0007	0.19	-	-	-	-	-	-

The figures are p-values for linear regression between baseline variables and CRT response rates analyzed in two multivariate models that included either QLV (Model 1) or QLV ratio (Model 2). ICM – ischemic cardiomyopathy; NICM – non-ischemic cardiomyopathy. Other abbreviations as in Table 1.

ISSN: 1471-2261