[Assisted circulation during electrostimulation of the heart]

Area of Science:

• Biomedical Engineering
• Cardiovascular Technology
• Medical Devices

Background:

• Assisted circulation devices require precise timing for optimal function.
• Electrocardiostimulation (ECS) can interfere with accurate cardiac rhythm detection.
• Maintaining cardiosynchronization during ECS is crucial for patient outcomes.

Purpose of the Study:

• To evaluate different cardiosynchronization strategies for assisted circulation devices during ECS.
• To compare R-wave detection with and without ECS artifacts.
• To assess the efficacy of using the ECS pulse itself for cardiosynchronization.

Main Methods:

• Comparative analysis of three cardiosynchronization conditions: intrinsic R-wave, artifact-removed R-wave, and ECS pulse.
• Development and testing of a novel R-wave separator system for ECS environments.
• Integration and validation of the system within an assisted circulation setup.

Main Results:

• Cardiosynchronization accuracy varies significantly across the tested conditions.
• Artifact removal improves R-wave detection but can be complex.
• Using the ECS pulse directly offers a viable, consistent synchronization method.
• The proposed R-wave separator system demonstrates robust performance.

Conclusions:

• A new system for assisted circulation achieves reliable cardiosynchronization during electrocardiostimulation.
• The system effectively handles ECS artifacts by utilizing a dedicated R-wave separator.
• This approach ensures consistent device function irrespective of cardiac rhythm status (pacing or intrinsic).