Prediction of response to cardiac resynchronization therapy using left ventricular pacing lead position and cardiovascular magnetic resonance derived wall motion patterns: a prospective cohort study

Table 2 CMR wall motion pattern associations

	Type I	Type II	P value
	N = 13 (39 %)	N = 20 (61 %)	P value
Etiology
NICM, n (%)	8 (62)	18 (90)	0.084
ICM, n (%)	5 (38)	2 (10)
ECG
Favorable^a, n (%)	2 (15)	11 (55)	0.032
Non-favorable, n (%)	11 (85)	9 (45)
CMR
Maximum wall delay (ms)	371 ± 117	471 ± 106	0.016
Late gadolinium enhancement
Scar, n (%)	6 (46)	2 (10)	0.035
No scar, n (%)	7 (54)	18 (90)
Septal flash
Present, n (%)	7 (54)	20 (100)	0.002
Absent, n (%)	6 (46)	0 (0)
CRT lead location
Lead concordant, n (%)	6 (46)	12 (60)	0.49
Lead remote, n (%)	7 (54)	8 (40)

^aA favorable ECG pattern is indicated by the presence of a true left bundle branch block and a QRS duration > 150 ms
Values are presented as n (%) or mean ± standard deviation. CMR = Cardiovascular Magnetic Resonance; CRT = Cardiac Resynchronization Therapy; ECG = Electrocardiogram; ICM = Ischemic Cardiomyopathy; NICM = Non-Ischemic Cardiomyopathy

ISSN: 1532-429X