P- and R-Wave Amplitude Sensed By Reveal LINQ™ Loop Recorder in Pediatric Patients

Abstract

Implantable loop recorders are commonly used to sense arrhythmias. The purpose of this study is to assess the P-and R-wave amplitudes at implantation (I) and follow-up (F) following insertion of the Reveal LINQt Insertable Cardiac Monitor (Medtronic, Minneapolis, MN) in an institutional review board-approved, multicenter study performed on pediatric patients younger than 18 years old. Collected data included demographics, presence of congenital heart disease (CHD), P-and R-wave-sensed amplitude at I and F, and the method of implant (i.e. mapping or standard.) P waves were manually measured and R-wave sensing was recorded by the device. A total of 87 patients had a Reveal LINQt (Medtronic, Minneapolis, MN) device implanted; the mean patient age was 11.8 years (0.5 years to 18 years) with 48% of patients being female and 19% of patients having CHD; mapping was used in 43% of patients.