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Pacemaker assessment in the ambulant patient

A Murray, R S Jordan, R G Gold

British Heart Journal

|November 1, 1981

Summary

A new portable electrocardiograph recorder accurately assesses implanted cardiac pacemaker function in ambulatory patients. This technique reliably detects pacemaker impulses with a low false positive rate, aiding in clinical assessment.

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Area of Science:

Biomedical Engineering
Cardiology
Medical Devices

Background:

Assessing implanted cardiac pacemaker function in ambulatory patients presents challenges.
Existing methods may not fully capture real-world pacemaker performance.

Purpose of the Study:

To introduce and evaluate a novel technique for assessing pacemaker function using a modified portable electrocardiograph recorder.
To determine the accuracy and clinical utility of this new assessment method.

Main Methods:

A modified portable electrocardiograph recorder was used to capture 24-hour electrocardiograms and pacemaker impulse marker pulses.
False positive detection rates were assessed in patients without pacemakers and then in patients with pacemakers.
Clinical usefulness was evaluated by assessing pacemaker function parameters like sensing, capture, and inhibition.

Main Results:

The technique demonstrated a low average false positive detection rate (less than one per 24 hours) in most patients.
Failure to detect pacemaker pulses occurred in only one patient.
The method successfully identified issues such as failure to sense, failure to capture, and inappropriate inhibition in demand pacemakers.

Conclusions:

The portable electrocardiograph recorder offers an accurate and clinically useful method for assessing implanted cardiac pacemaker function.
This technique facilitates the identification of various pacemaker malfunctions in ambulant patients.
It provides valuable data on pacemaker performance over a 24-hour period.

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