Guidelines of the European Society of Cardiology (ESC) entitled Cardiac Pacing and Cardiac Resynchronization Therapy (ESC Clinical Practice Guidelines, 2013), CRT has

# The Author(s) 2014. This article is published with open access at Springerlink.com Cardiac resynchronisation therapy (CRT) emerged more than a decade ago as a useful form of device therapy for heart failure associated with abnormal ventricular conduction indi-cated by a wide QRS complex [1, 2]. According to th