Initial study on heart sounds telemetry with signal transmitted by mobile telephone

Objective To develop a method for telemetering cardiac efficiency and heart rate simultaneously. Methods Signals of cardiac efficiency and cycle were acquired with a heart sounds signals collection device, and were transmitted to a mobile telephone through a voice frequency cable, then to another mobile telephone by wireless way, finally to a computer through another voice frequency cable. Results The above transmission were accomplished successfully. The designed distances between two mobile telephones were 5m, 3km and 2000km. Conclusion Being noninvasive, convenient, rapid, low-cost and reusable, the above-mentioned method can be used to telemeter cardiac efficiency and heart rate simultaneously.