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Troubleshooting pacemakers 

Troubleshooting pacemakers
Troubleshooting pacemakers

Jonathan Timperley

, Paul Leeson

, Andrew RJ Mitchell

, and Timothy Betts

Page of

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date: 27 September 2020

General principles 132

High threshold 134

Oversensing 138

Undersensing 144

Generator failure 148

Diaphragmatic stimulation 150

Skeletal muscle stimulation 150

Pacemaker-mediated tachycardia 150

Suspected pacemaker malfunction with and without visible pacing stimuli on ECG 152

Pacemakers usually fail to work appropriately due to an inability to pace or an inability to sense correctly. This may be a consequence of mechanical failure (e.g. lead fracture), surgical complications (e.g. lead displacement), or programming (incorrect pacing mode, sensitivity, or output, etc.). Other complications include diaphragmatic stimulation, muscle stimulation, tracking of atrial arrhythmias (...

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