Cardiac resynchronization therapy guided by late gadolinium-enhancement cardiovascular magnetic resonance

Table 2 Effects of implantation strategy on clinical outcomes

	Cardiovascular death		Cardiovascular death / hospitalizations for HF		Death from any cause / hospitalizations for MACE
	HR (95% CI) *	p	HR (95% CI) *	p	HR (95% CI) *	p
+CMR+S	6.34 (3.64 to 11.0)	< 0.0001	5.57 (3.40 to 9.14)	< 0.0001	4.74 (2.95 to 7.62)	< 0.0001
-CMR	1.51 (0.96 to 2.36)	0.0726	1.61 (1.09 to 2.38)	0.0169	1.87 (1.31 to 2.66)	0.0005

*, Hazard ratios (HR) and 95% confidence intervals (CI) refer to the risk of meeting the endpoints in comparison to the group in which CMR was performed and the LV lead was deployed in non-scarred myocardium. Adjustment has been made for age, NYHA class, QRS duration, history of CABG and of chronic atrial fibrillation in Cox proportional hazards analyses. +CMR+S = CMR showing scar at the LV pacing position; -CMR = non-CMR guided group.

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