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Case Reports
. 2011:2011:146062.
doi: 10.5402/2011/146062. Epub 2011 Apr 17.

Inappropriate asystole detection in early postoperative phase after loop recorder implantation

Miriam Bortnik  1 , Eraldo Occhetta, Andrea Magnani, Anna Degiovanni, Paolo Marino
Affiliations
Case Reports

Inappropriate asystole detection in early postoperative phase after loop recorder implantation

Miriam Bortnik et al. ISRN Cardiol. 2011.

Abstract

The implantable loop recorder is a useful diagnostic tool for patients with unexplained syncope. The capability to automatically detect and store arrhythmic events, implemented in the last generations of these devices, can further improve the diagnostic yield, but this feature can be compromised by inappropriate detection of false arrhythmias. We herein report the case of a patient in which several inappropriate activations of long-lasting asystole occurred in the two days following the implant, probably because of an intermittently loose contact between the device and subcutaneous tissue for a small pocket haematoma.

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Figures

Figure 1
Figure 1
(a) and (b) inappropriate auto-detection of asystole. (a) shows an example of inappropriate long-lasting (42 seconds) asystolic pause detection from signal loss artefact recorded soon after ILR implant. (b) shows another example of inappropriate detection of a briefer pause related to undersensing of ECG signal amplitude later detected.
Figure 2
Figure 2
Inappropriate auto-activation of fast ventricular tachycardia due to oversensing from signal noise artefact.
See this image and copyright information in PMC

References

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