Echo-driven V-V optimization determines clinical improvement in non responders to cardiac resynchronization treatment

Table 1 Characteristics of Study Subjects

No	Age/G	CMP	NYHA	EF(%)	AVb	VVb	AVp	VVp	VTIb	VTIp	MIb*	MIp*	EDb*	EDp*
1	87/M	ICM	3	20%	120	0	160	50	10.95	12.36	41.68	39.65	30.00	33.62
2	18/M	NICM	4	20%	100	0	100	20	10.47	12.16	51.29	54.47	26.35	28.24
3#	67/M	NICM	2	38%	180	5	180	10	24.50	26.04	50.47	48.45	32.24	37.29
4	67/M	ICM	3	37%	180	0	210	40	25.79	23.02	51.67	55.14	31.22	32.42
5	61/F	NICM	3	36%	100	0	60	40	13.37	15.15	42.76	44.60	25.98	27.59
6	61/F	NICM	3	35%	100	20	30	-15	21.98	20.36	36.90	40.71	34.34	32.98
7	85/F	ICM	3	35%	110	20	80	-20	12.23	15.87	41.94	49.68	24.05	26.87
8	75/F	NICM	3	51%	180	20	220	-20	16.80	18.14	53.41	52.54	29.69	32.36
Mean ± SD	65 ± 21		2.9 ± 0.6	34 ± 11	134 ± 39	8 ± 10	130 ± 72	32 ± 16	17 ± 6	18 ± 5	46 ± 6	48 ± 6	29 ± 3	31 ± 4

* values are percent of cardiac cycle.
#higher than expected PW Doppler VTI is artefactual due to the presence of a bioprosthetic aortic valve.
G = gender, ICM = ischemic cardiomyopathy, NICM = non-ischemic cardiomyopathy, EF = ejection fraction, AVb = baseline atrioventricular delay, AVp = post optimization atrioventricular delay, VVb = baseline interventricular delay, VVp = post optimization interventricular delay, VTIb = velocity times integral baseline (cm), VTIp = post optimization velocity times integral (cm), MIb = baseline mitral inflow duration, MIp = post optimization mitral inflow duration, EDb = baseline LV ejection duration, EDp = post optimization LV ejection duration. All time intervals are in milliseconds.

ISSN: 1476-7120