Indications for Loop Recorder Implantation in ESUS with SVT

Introduction to ESUS and Loop Recorder Implantation

ESUS (Embolic Stroke of Undetermined Source) is a subtype of cryptogenic stroke where no clear cause is found despite standardized diagnostics, although an embolic origin is suspected, according to the American Heart Association 1, 3
The American Heart Association recommends the use of an implantable loop recorder in patients with embolic stroke of undetermined source when the cause remains unclear and there is a suspicion of paroxysmal atrial fibrillation 2

Frequent supraventricular tachycardia (SVT) episodes can be precursors or indicators of paroxysmal atrial fibrillation, as noted by the European Society of Cardiology 1
Elevated BNP levels are associated with an increased risk of atrial fibrillation, as indicated by studies published in the European Heart Journal 1

Implantable loop recorders have a significantly higher detection rate for atrial fibrillation compared to conventional monitoring (52% vs. 20%) in patients with cryptogenic stroke, according to the American College of Cardiology 2
Continuous EKG recording for up to 24 months with high signal quality can be achieved with loop recorders, as reported in the European Heart Journal 4, 5

Early detection of atrial fibrillation and initiation of oral anticoagulation can reduce the risk of further embolic events in patients with ESUS, as recommended by the American Heart Association 2

The implantation of a loop recorder requires a small surgical procedure, as noted in the European Heart Journal 4, 2
The cost of the implantable device is relatively high but can be cost-effective if a symptom-EKG correlation is achieved within 12 months, according to the European Society of Cardiology 4, 2