1. Volume 9, Issue 1, Pages 34-39 (January 2012)
Does cardiac resynchronization therapy provide unrecognized benefit in patients with prolonged PR intervals? The impact of restoring atrioventricular synchrony: An analysis from the COMPANION Trial 
Brian Olshansky, MD, FHRS, John D. Day, MD, FHRS, Renee M. Sullivan, MD, Patrick Yong, MSEE, Elizabeth Galle, MS, Jonathan S. Steinberg, MD, FHRS 
Heart Rhythm 
Volume 9, Issue 1, Pages (January 2012)
DOI: /j.hrthm
Copyright © 2012 Heart Rhythm Society Terms and Conditions

2. Figure 1
A: Differences in outcome by PR interval in the OPT group. B: Outcome in the normal PR interval group: OPT versus CRT. C: Outcome in the prolonged PR interval group: OPT versus CRT. D: Differences in outcome by PR interval in the CRT group. CRT = cardiac resynchronization therapy; HF = heart failure; HR = hazard ratio; OPT = optimal pharmacological therapy.
Heart Rhythm 2012 9, 34-39DOI: ( /j.hrthm )
Copyright © 2012 Heart Rhythm Society Terms and Conditions