Table 2.

Summary of 2016 ESC Guidelines for the diagnosis and treatment of acute and chronic heart failure relating to CRT and RV pacing in patients with high-degree AV Block. Adapted from 2016 ESC Guidelines for the Diagnosis and Treatment of Acute and Chronic Heart Failure [61••]

ESC recommendation	Class	Level
CRT is recommended over RV pacing for patients in sinus rhythm or AF, with HFrEF of any NYHA functional class, who have an indication for ventricular pacing and high-degree AV block, in order to reduce morbidity.	I	A
CRT is recommended over RV pacing in patients with HFrEF who require pacing with a high-degree of AV block.	I	A
Pacing modes that avoid inducing or worsening ventricular dyssynchrony should be considered for patients with HFrEF who require ventricular pacing without high-degree AV block.	IIa	C

ESC European Society of Cardiology, CRT cardiac resynchronization therapy, HFrEF heart failure with reduced ejection fraction, NYHA New York Heart Association, AV atrioventricular, RV right ventricular