Implantable Loop Recorder in Inherited Arrhythmia Diseases: A Critical Tool for Symptom Diagnosis and Advanced Risk Stratification

The differential diagnosis between benign syncope common in a young population and life-threatening arrhythmic ones represents a major challenge in the management of patients with inherited arrhythmias (IAs) (1). In this population, ventricular arrhythmias can often be hemodynamically tolerated, adding to the complexity of the event’s adjudication (1). The probability of documenting the rhythm underlying a fainting event or a silent arrhythmia with periodic external recordings is low and inadequate to the need of long-term, real-life longitudinal monitoring. Implantable loop recorders (ILRs) have a recognized value for the evaluation of syncope and palpitations (2), but data on their role for IA are scarce. Furthermore, the advent of injectable devices increased their tolerability and acceptance, making them suitable also for children. Here, we provide retrospective data on the largest group of IA patients implanted with ILRs from a single tertiary center. Data are descriptive and expressed as percentage, median, and interquartile range (IQR).