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Orthotripsy mimicking asystole.

Stephen C Vlay¹

¹Stony Brook Arrhythmia Study and Sudden Death Prevention Center, Division of Cardiology, Department of Medicine, Stony Brook University, New York, USA. svlay@notes.cc.sunysb.edu

Pacing and Clinical Electrophysiology : PACE

|April 14, 2004

Summary

An implantable loop recorder (ILR) can detect apparent arrhythmias during procedures like orthotripsy. However, electrostatic discharge can cause artifact, mimicking serious cardiac events like ventricular asystole.

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Area of Science:

Cardiology
Medical Devices
Electrophysiology

Background:

Implantable loop recorders (ILRs) are used for long-term cardiac monitoring.
Orthotripsy procedures can potentially interfere with cardiac monitoring devices.

Purpose of the Study:

To evaluate an apparent arrhythmia detected by an ILR during an orthotripsy procedure.
To differentiate true arrhythmias from device-related artifacts.

Main Methods:

An ILR was implanted to investigate dizziness.
The ILR recorded an event during an orthotripsy procedure.
Cardiac tracing analysis was performed to identify the event's origin.

Main Results:

An apparent arrhythmia was documented by the ILR during orthotripsy.
Review of the tracing identified the event as artifact.
The artifact was attributed to electrostatic discharge.

Conclusions:

Electrostatic discharge during orthotripsy can create artifactual signals.
These artifacts may mimic serious arrhythmias such as ventricular asystole.
Careful review of ILR tracings is crucial to avoid misinterpretation of procedural artifacts.

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