Oversensing of transthoracic excitation stimuli in contemporary pacemakers

Background Transthoracic impedance measurements (TIM) is primarily used for minute ventilation rate adaptive sensors in pacemakers. With elevated impedance, the TIM electrical signal itself is oversensed, causing device malfunction. Objective We report an increased incidence of TIM oversensing. Meth...

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Bibliographic Details
Published in:Pacing and clinical electrophysiology 2018-02, Vol.41 (2), p.161-166
Main Authors: Ryan, James D., Tempel, Nathan D., Engle, Dean D., Hayes, David L., Cha, Yong‐Mei, Asirvatham, Samuel J.
Format: Article
Language:English
Subjects:
Aged
Aged, 80 and over
Cardiography, Impedance
Electrocardiography
Equipment Design
Equipment Failure Analysis
Female
Heart diseases
Humans
Male
Middle Aged
minute ventilation
MV Chop
oversensing
pacemaker
pacemaker complication
Pacemaker, Artificial - adverse effects
Pacemakers
Patients
Predictive Value of Tests
rate‐adaptive pacemaker
Retrospective Studies
Signal Processing, Computer-Assisted
transthoracic impedance measurement
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Summary:Background Transthoracic impedance measurements (TIM) is primarily used for minute ventilation rate adaptive sensors in pacemakers. With elevated impedance, the TIM electrical signal itself is oversensed, causing device malfunction. Objective We report an increased incidence of TIM oversensing. Method Retrospective chart review. We review existing records of 18 patients who have demonstrated device malfunction with TIM oversensing. Results We have found a 1.8% incidence of TIM‐related oversensing in our patient population of 959 patients with contemporary Boston Scientific (Marlborough, MA, USA) pacemakers and cardiac resynchronization therapy pacemakers. One patient experienced a syncopal episode. Conclusion Oversensing with pacing inhibition is apparent with the potential of adverse effects to patients.
ISSN:0147-8389
1540-8159
DOI:10.1111/pace.13269