Cardiac incoordination induced by left bundle branch block: its relation with left ventricular systolic function in patients with and without cardiomyopathy

Table 1 Demographics and standard echocardiographic variables.

Variables	Controls N = 20	LBBB N = 21	ICMP N = 19	DCMP N = 26	P
Age, years	70 ± 4	61 ± 8*	61 ± 9*	65 ± 9*	< 0.001
Gender, (M/F)	10/10	11/10	17/2	21/5	0.01
QRS, ms	84 ± 4	145 ± 9*	150 ± 9*	154 ± 9*	< 0.001
LA diameter, mm	34 ± 5	37 ± 8	49 ± 10*†	48 ± 10*†	<0.001
SWT, mm	11 ± 0.7	11 ± 1.3	9.7 ± 1.9†	9.2 ± 1.9*†	< 0.01
PWT, mm	11 ± 1.0	10 ± 1.0	10 ± 2.1	10 ± 1.8	NS
LVEDD, mm	43 ± 6	46 ± 6	75 ± 8*†	72 ± 12*†	<0.001
LVEDV, ml	99 ± 23	114 ± 36	247 ± 73*†	274 ± 123*†	< 0.001
LVESV, ml	46 ± 10	63 ± 26	177 ± 62*†	203 ± 105*†	< 0.001
LVEF, %	54 ± 4	46 ± 8*	27 ± 10*†	29 ± 7*†	<0.001

Abbreviations: LA = Left atrium; LVEDD = Left ventricular end diastolic diameter; LVEF = Left ventricular ejection fraction; LVEDV = Left ventricular end diastolic volume; LVESV = Left ventricular end systolic volume; PWT = Posterior wall thickness; SWT = Septal wall thickness.
P = Analysis of variance.
* < 0.05 vs. Controls.
†< 0.05 vs. LBBB.

ISSN: 1476-7120