QRS pattern and improvement in right and left ventricular function after cardiac resynchronization therapy: a radionuclide study

Table 5 Baseline clinical characteristics predicting response to CRT

	Univariate analysis OR (95%CI)	p	Multivariate analysis OR (95%CI)	p
Males	0.36 (0.09-1.41)	0.14
Age (years)	1.01 (0.96-1.01)	0.63
IHD	0.45 (0.13-1.52)	0.20
Diabetes	0.42 (0.12-1.49)	0.18
Hypertension	1.18 (0.38-3.67)	0.77
Chronic kidney disease	1.41 (0.37-5.45)	0.62
LBBB	8.44 (2.18-32.66)	0.002	7.47 (1.80-30.94)	0.006
RBBB	n.a.	n.a.
Non-specific IVCD	0.19 (0.05-0.74)	0.016
QRS duration (ms)	1.00 (0.98-1.02)	0.90
QRS ≥ 150 ms	1.18 (0.38-3.67)	0.77
LBBB and QRS ≥ 150 ms	2.81 (0.85-9.28)	0.09
Left axis	0.72 (0.23-2.25)	0.57
LVEF (%)	1.11 (1.00-1.23)	0.06
RVEF (%)	1.01 (0.95-1.08)	0.70
Intra LV dyssynchrony	0.28 (0.03-2.88)	0.28
Intra RV dyssynchrony	2.11 (0.65-6.90)	0.22
Interventricular dyssynchrony	1.52 (0.46-5.04)	0.49

IHD, ischemic heart disease; LBBB, left bundle branch block; RBBB, right bundle branch block; IVCD, intraventricular conduction disturbance; LVEF, left ventricular ejection fraction; RVEF, right ventricular ejection fraction; LV, left ventricular; RV, right ventricular

ISSN: 1471-2261