Although various cardiac monitoring methods were developed to detect subclinical arrhythmias, guidelines do not address in detail the management of subclinical atrial fibrillation and tachyarrhythmias. The European Heart Rhythm Association recently published a consensus document that addresses the clinical importance, implications, and management of device-detected subclinical atrial tachyarrhythmias. This paper comprehensively reviews the diagnostic tools to detect subclinical atrial arrhythmias and discusses the pathophysiologic link between device-detected subclinical atrial fibrillation and stroke. In this invited review, in the light of this paper and current scientific data, we aimed to summarize how to manage subclinical atrial arrhythmias.