RT Journal Article SR Electronic A1 Nichols, Emma Hitt T1 LEADLESS II JF MD Conference Express YR 2015 FD SAGE Publications VO 15 IS 28 suppl 2 SP 7 OP 8 DO 10.1177/1559897715612464 UL http://mdc.sagepub.com/content/15/28_suppl_2/7.abstract AB In the LEADLESS II trial, a leadless cardiac pacemaker was demonstrated to be safe and effective. At 6 months, the serious device-related adverse events occurred in 5.7% of patients, and the primary efficacy end point of acceptable pacing capture threshold and therapeutically acceptable sensing amplitude was achieved in 90% of patients.