Focused Update: Device Treatment of Cardiac Rhythm Disorders

New recommendations draw upon recent research to refine the indications for cardiac resynchronization therapy.

Sponsoring Organizations: American College of Cardiology, American Heart Association, Heart Rhythm Society

Background and Purpose: After a careful review of study results reported since the publication of the “ACC/AHA/HRS 2008 Guidelines for Device-Based Therapy of Cardiac Rhythm Abnormalities” (JW Cardiol Jun 11 2008), the guideline writing group determined that updated recommendations were necessary, especially with regard to cardiac resynchronization therapy (CRT).

Key Points:

1. The Class I indication for CRT is now restricted to patients with left bundle branch block (LBBB), and the threshold QRS duration has been raised from >120 ms to ≥150 ms. The Class I indication has also been expanded to include patients with New York Heart Associat…

Reviewing Author

Hugh Calkins, MD

Focused Update: Device Treatment of Cardiac Rhythm Disorders

Topics

Key Points:

Reviewing Author