RT Journal Article SR Electronic A1 Zarifyan, Alla T1 CREDO JF MD Conference Express YR 2015 FD SAGE Publications VO 15 IS 12 SP 14 OP 14 DO 10.1177/1559897715593521 UL http://mdc.sagepub.com/content/15/12/14.abstract AB The observational CREDO study of Riata silicone endocardial defibrillation leads demonstrates that the average rate of electrical failure for 7 French and 8 French Riata leads was 5.9% over a mean follow-up of 7.5 years, with a trend toward a higher failure rate with cable externalization with 8 Fr leads.