Sinus bradycardia treated by long-term atrial pacing

Area of Science:

• Biomedical Engineering
• Cardiology
• Medical Devices

Background:

• Pathological sinus bradycardia can lead to low cardiac output, often managed with drug therapy.
• Current pacemaker systems may require surgical intervention for battery replacement.
• Patient-initiated heart rate control is desirable for managing bradycardia symptoms.

Purpose of the Study:

• To describe a novel technique for long-term atrial pacing.
• To evaluate the feasibility of wireless power transfer for pacemaker systems.
• To assess the potential of this pacing method as an alternative to pharmacological treatment for bradycardia.

Main Methods:

• A system for long-term atrial pacing utilizing external inductive-coupling for power transfer through intact skin.
• The system allows for wireless battery changes, removing the need for further surgical procedures.
• Patient control over heart rate adjustment within a wide range was implemented.

Main Results:

• Successful long-term atrial pacing was achieved using the described inductive-coupling system.
• Two patients with low cardiac output due to pathological sinus bradycardia were successfully treated with this method.
• The system demonstrated the potential for patient self-management of heart rate.

Conclusions:

• The described inductive-coupling pacing technique offers a viable, non-surgical solution for long-term atrial pacing.
• This approach may provide a preferable alternative to drug therapy for managing low cardiac output secondary to pathological sinus bradycardia.
• The system empowers patients with control over their heart rate, improving quality of life.