This document represents the 2008 ACC/AHA/HRS Guidelines for Device-Based Therapy of Cardiac Rhythm Abnormalities.
6% VVI(R) to DDD(R): 3.1% DDD(R) dropout: 8.3% R*added to pacing mode designation indicates rate-responsive pacemakers implanted in all patients. (R)
Epstein et al. (Fri,) studied this question.