Table 3.

Hazard ratios for readmissions and cardiac mortality in heart failure patients with and without intraventricular conduction defects after a median follow-up of 21 months

	P-value	HR	95% CI for HR
			Lower	Upper
All-cause readmissiona
LBBB vs. no IVCD	0.123	1.172	0.958	1.433
RBBB vs. no IVCD	0.018	1.433	1.063	1.930
LAFB vs. no IVCD	0.459	0.887	0.646	1.218
Cardiac deathb
LBBB vs. no IVCD	0.005	1.579	1.149	2.169
RBBB vs. no IVCD	0.007	1.894	1.192	3.008
LAFB vs. no IVCD	0.336	1.266	0.783	2.049
Pump failure deathc
LBBB vs. no IVCD	0.015	1.600	1.097	2.335
RBBB vs. no IVCD	0.0001	2.620	1.603	4.283
LAFB vs. no IVCD	0.139	1.492	0.878	2.535

AMI, acute myocardial infarction; CI, confidence interval; eGFR, estimated glomerular filtration rate (MDRD method); HR, hazard ratio; ICD, implantable cardioverter-defibrillator; IVCD, intraventricular conduction defect; LA, left atrial; LAFB, left anterior fascicular block; RAAS blockade: renin–angiotensin–aldosterone system blockade; RBBB: right bundle branch block.

^aAdjusted for: age, ICD, CRT, signs of left HF, signs of right HF, LVEF, diabetes mellitus, prior AMI, LV mass index, haemoglobin, eGFR, and loop diuretics.

^bAdjusted for: age, ICD, CRT, signs of left HF, signs of right HF, LVEF, diabetes mellitus, prior AMI, LV mass index, indexed LA diameter, mitral valve regurgitation III/IV, haemoglobin, beta-blockers, and RAAS blockade.

^cAdjusted for: age, ICD, CRT, signs of left HF, signs of right HF, LVEF, diabetes mellitus, LV mass index, indexed LA diameter, haemoglobin, eGFR, beta-blockers, and RAAS blockade.