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Development of the low-cost, smartphone-based cardiac auscultation training manikin

Karch Dominik, Kopyt Krzysztofa, Krzywon Julia, Somionka Pawel, Gorski Stanislaw, Cebula Grzegorz

Bio-Algorithms and Med-Systems

2020

Vol. 16, no. 3

art. no. 20200028

Cardiac auscultation remains a crucial part of physical examination. In preclinical training, there are multiple approaches for teaching that skill. Our goal was to find a compromise between expensive and complicated highfidelity simulators and simple devices with a lack of realism. Methods: Our project is made up of three main parts: a manikin’s torso, a specially prepared stethoscope, and a smartphone application. The position of the stethoscope’s head is recognized by Hall effect sensors inside of a manikin, and the information is sent via Bluetooth to the smartphone. Data are interpreted by the application, and proper recording is selected from sounds’ base. The user can easily adjust additional settings (e.g., main volume, playback speed, background noises). Then, the processed sound is played via a Bluetooth headset that is a part of the stethoscope. Results: The solution that we suggest is easy to use with minimal adversely affecting the quality of learning. Handling of our device is intuitive, and minimal prior training is required. The low cost of the device itself and the widespread use of smartphones make it easy to implement. Conclusions: We believe that this solution could be a complement for the currently used methods for teaching cardiac auscultation in preclinical training.