[Development of heart sound signal detection system based on USB interface]

Area of Science:

• Cardiology
• Biomedical Engineering
• Signal Processing

Context:

• Accurate assessment of cardiac contractility is crucial for diagnosing and managing heart disease.
• Existing methods for cardiac function evaluation can be invasive, time-consuming, or expensive.
• There is a need for accessible and efficient tools for real-time cardiac monitoring.

Purpose:

• To introduce a novel system for heart sound recording, analysis, and processing.
• To develop a noninvasive, convenient, and rapid method for evaluating cardiac contractility.
• To provide a reliable technical platform for assessing cardiac contractility reserve.

Summary:

• The developed system utilizes a high-performance sensor for heart sound sampling, integrated with preprocessing circuits, an A/D conversion module, and a USB interface for high-speed computer communication.
• Experimental results demonstrate the system's capability for noninvasive, convenient, inexpensive, and rapid detection of cardiac contractility.
• The system effectively differentiates cardiac function in both healthy subjects and patients with heart disease.

Impact:

• This system offers a reliable and cost-effective platform for evaluating cardiac contractility reserve, potentially improving early diagnosis and patient management.
• The technology facilitates widespread application in clinical settings and research for cardiac health assessment.
• Enables enhanced understanding and monitoring of cardiovascular function through accessible technology.