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Pacing Clin Electrophysiol. 2016 Dec;39(12):1344-1350. doi: 10.1111/pace.12977. Epub 2016 Dec 7.

Maintaining Accurate Long-Term Sensing Ability Despite Significant Size Reduction of Implantable Cardiac Monitors.

Author information

1
Department of Cardiology, West-German Heart and Vascular Center, University Hospital Essen, Essen, Germany.
2
Department of Thoracic and Cardiovascular Surgery, West-German Heart and Vascular Center, University Hospital Essen, Essen, Germany.
3
Institute of Medical Informatics, Biometry and Epidemiology, University Hospital Essen, Essen, Germany.
4
Division of Electrophysiology, Department of Internal Medicine I and Cardiology, Alfried Krupp Hospital Essen, Essen, Germany.

Abstract

BACKGROUND:

The Reveal LINQ™ implantable cardiac monitor (ICM; Medtronic, Minneapolis, MN, USA) is obviously smaller than its precursor (the Reveal XT™), but little is known about its long-term safety. Here, we investigated the long-term R-wave sensing reliability of the Reveal LINQ™ ICM.

METHODS:

We analyzed the sensing quality of the Reveal LINQ™ ICM over time between March 2014 and January 2015.

RESULTS:

A total of 30 patients underwent Reveal LINQ™ implantation. The main reason for implantation was unexplained syncope (60%). We evaluated a total of 305.8 patient-months (median, 10.7 months) of R-wave sensing quality. A comparison of baseline and follow-up R-wave sensing values revealed no difference (0.401 mV ± 0.244 mV vs 0.447 mV ± 0.323 mV; P = 0.225).

CONCLUSIONS:

The consistent detection of events is an important safety feature of an ICM and linked to secure R-wave sensing. Despite the noticeable size reduction, the Reveal LINQ™ ICM retains reliable sensing quality over time.

KEYWORDS:

R-wave sensing; implantable cardiac monitor; signal quality

PMID:
27862030
DOI:
10.1111/pace.12977
[Indexed for MEDLINE]

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