Implantable Loop Recorders

Class I

•high-risk patients where complete evaluation did not demonstrate a cause of syncope (A)

•Early evaluation phase of recurrent syncope where

-No need for immediate action/hospitilisation (A)

-There is likely to be a recurrence in device battery longevity (A)

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Class IIa

•Infrequent severe symptoms, where bradycardia or ventricular arrhythmias are suspected (B)

Class IIb

•transient LOC of uncertain syncopal origin in order to definitely exclude an arrhythmic mechanism (C)