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Pacemaker syndrome: definition and evaluation
Cardiology Clinics
|November 1, 1985
Summary
Pacemaker syndrome, a disorder from ventricular pacing, causes symptoms like fatigue and syncope due to loss of atrioventricular synchrony. Restoring this synchrony through appropriate pacing modes can resolve the condition.
Area of Science:
- Cardiology
- Biomedical Engineering
- Medical Devices
Background:
- Pacemaker syndrome is an iatrogenic condition arising from ventricular pacing.
- It is characterized by hemodynamic disturbances resulting from the stimulation of heart ventricles by a pulse generator.
Purpose of the Study:
- To elucidate the mechanisms underlying pacemaker syndrome.
- To discuss preventative strategies and treatment outcomes for pacemaker syndrome.
Main Methods:
- Review of postulated pathophysiological mechanisms including loss of atrioventricular synchrony, vasodepressor reflexes, and retrograde atrial activation.
- Analysis of clinical manifestations ranging from fatigability to syncope.
Main Results:
- Symptoms of pacemaker syndrome are temporally linked to ventricular stimulation by the pulse generator.
- Key proposed mechanisms involve disruptions in normal cardiac electrical activation and hemodynamic function.
Conclusions:
- Prevention strategies focus on selecting the optimal pacing mode tailored to individual patient needs.
- Restoration of atrioventricular synchrony is the primary method for achieving remission of pacemaker syndrome.