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Published on: May 23, 2021
[Bradycardic arrhythmias]
Insights
Pacemaker implantation is indicated for symptomatic bradycardia and some asymptomatic conditions. Reversible causes must be treated before permanent pacemaker insertion, with temporary drug therapy considered for acute symptomatic bradycardia.
Area of Science:
- Cardiology
- Electrophysiology
- Medical Devices
Context:
- Bradycardia arrhythmias, stemming from impulse formation and conduction disorders, frequently necessitate pacemaker implantation.
- Prognostic indications for pacemakers exist in asymptomatic patients, though with generally lower recommendation classes.
- Acute myocardial infarction and cardiac surgery can precipitate bradycardia, potentially requiring pacemaker implantation.
Purpose:
- To outline the indications for pacemaker implantation in bradycardia.
- To emphasize the importance of addressing reversible causes before definitive pacemaker implantation.
- To review available pacemaker systems, including temporary, permanent, multi-chamber, and emerging leadless technologies.
Summary:
- Symptomatic bradycardia due to impulse disorders typically warrants pacemaker implantation.
- Prognostic indications for pacemakers in asymptomatic individuals exist but carry weaker recommendations.
- Reversible causes of bradycardia must be treated before permanent pacemaker implantation; drug therapy is a temporary option for acute symptomatic cases.
- Pacemaker systems range from temporary to permanent, with variations in chamber configurations (one-, two-, three-chamber) and ongoing development of leadless systems.
Impact:
- Provides a comprehensive overview of pacemaker indications and system types for clinicians.
- Highlights the critical step of investigating and treating reversible causes of bradycardia.
- Informs about the evolving landscape of pacemaker technology, including leadless systems.
Abstract:
Clinically symptomatic bradycardia arrhythmias due to disorders of impulse formation and conduction usually lead to an indication for pacemaker implantation. On the other hand, there are also a number of prognostic indications for pacemaker implantation in asymptomatic patients, but often with a lower class of recommendation. After acute myocardial infarction or cardiac surgery the implantation of a pacemaker may be necessary for the occurrence of bradycardia. Prior to a definitive pacemaker implantation reversible or preventable causes must be investigated and treated. Only for acute treatment of symptomatic bradycardia as a bridging measure drug therapy can be considered. For pacemaker supply various systems are available. We distinguish temporary from permanent systems and one-, two-and three-chamber systems. In addition, leadless pacemaker systems are tested.
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