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Related Experiment Videos

Initial clinical experience with implantable loop recorders.

H Mieszczanska1, B Ibrahim, T J Cohen

  • 1Director of Electrophysiology, Winthrop University Hospital, 259 First St., Mineola, NY 11501, USA.

The Journal of Invasive Cardiology
|December 4, 2001
PubMed
Summary
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Implantable Loop Recorders (ILR) offer a safe and effective method for diagnosing recurrent unexplained syncope. This study found ILRs helped identify the cause of fainting in 42% of patients, leading to appropriate treatment.

Area of Science:

  • Cardiology
  • Neurology
  • Medical Devices

Background:

  • Recurrent unexplained syncope poses a diagnostic challenge.
  • Previous evaluations including tilt table tests, electrophysiologic studies, and neurologic work-ups were inconclusive in these patients.
  • Implantable Loop Recorders (ILRs) offer continuous cardiac monitoring.

Purpose of the Study:

  • To review the initial experience with Implantable Loop Recorders (ILRs) at a university hospital.
  • To assess the utility of ILRs in diagnosing recurrent unexplained syncope or presyncope.
  • To evaluate the safety and efficacy of ILR implantation.

Main Methods:

  • Twelve patients with a history of recurrent syncope or presyncope of unknown etiology underwent ILR implantation.
  • The Reveal ILR device was used, implanted subcutaneously below the clavicle.

Related Experiment Videos

  • Patients were followed for a mean of 7.2 months, with a mean of 6.0 prior syncopal events.

    • Main Results:

    • No significant complications were reported following ILR implantation.
    • In 5 out of 12 patients (42%), the ILR successfully diagnosed the etiology of syncope.
    • Diagnoses included asystole (3 patients), junctional bradycardia (1 patient), and seizure activity (1 patient).

    Conclusions:

    • ILR implantation is a simple, useful, and safe procedure for diagnosing recurrent unexplained syncope.
    • ILRs are particularly valuable after inconclusive electrophysiologic and neurologic evaluations.
    • Documented bradyarrhythmias led to successful permanent pacemaker implantation in 4 patients.