Cardiac Resynchronization Therapy for Congestive Heart Failure Cardiac Resynchronization Therapy This outdated information has been archived and is available for reference purposes only. To access the archived document, please go to: http://archive.ahrq.gov/clinic/epcarch.htm. Current as of August 2012 Internet Citation: Cardiac Resynchronization Therapy for Congestive Heart Failure. August 2012. Agency for Healthcare Research and Quality, Rockville, MD. http://www.ahrq.gov/redirects/resyn.html