A Rare Case of Rapid Eye Movement Sleep-Related Bradyarrhythmia Syndrome with High-Grade AV Block, a case report

The mechanism behind such bradyarrhythmias is not well established. However, features of autonomic lability were observed on the patient's electrocardiogram monitoring during stress testing. Such autonomic lability with vagal predominance may be the driver of the bradyarrhythmias. It is unknown whether they represent a benign incidental finding or not due to limited case numbers. Furthermore, there is currently no clear consensus on their management. This stresses the need for further research to confirm their pathophysiological basis and develop clearer management strategies.