An Engineering Perspective of External Cardiac Loop Recorder: A Systematic Review

Area of Science:

• Biomedical Engineering
• Cardiovascular Monitoring
• Medical Device Design

Background:

• Diagnosing infrequent heart palpitations requires long-term cardiac monitoring.
• External Cardiac Loop Recorders (ELRs) provide continuous ECG monitoring but are prohibitively expensive.
• Limited availability of affordable ELRs hinders diagnosis in developing countries, such as India.

Approach:

• A comparative review of essential ELR components (ECG electrodes, instrumentation amplifier, ADC, signal processing) was conducted.
• The review analyzed various design choices for each component to identify cost-effective and low-power options.
• This systematic approach aims to facilitate the development of a compact and affordable ELR.

Key Points:

• Component-level analysis is crucial for optimizing ELR design.
• Cost-effectiveness and low power consumption are primary design considerations.
• Selection of appropriate ECG electrodes, amplifiers, ADCs, and processing units impacts overall device performance and affordability.

Conclusions:

• Developing a cost-effective ELR is feasible through careful component selection and design.
• This research provides a roadmap for creating accessible cardiac monitoring solutions for underserved populations.
• The proposed design aims to enhance the availability of crucial diagnostic tools in rural India.