التفاصيل البيبلوغرافية
| العنوان: |
Development of a Smartphone App for Visualizing Heart Sounds and Murmurs. |
| المؤلفون: |
Mamorita, Noritaka, arisaka, Naoya, Isonaka, Risa, Kawakami, Tadashi, Takeuchi, akihiro |
| المصدر: |
Cardiology; Jun2017, Vol. 137 Issue 3, p193-200, 8p, 1 Color Photograph, 2 Black and White Photographs, 1 Diagram, 2 Graphs |
| مصطلحات موضوعية: |
HEART sounds, HEART murmurs, SMARTPHONE software, HEART auscultation, SOUND waves, MOBILE apps, DIAGNOSIS |
| مستخلص: |
Background: Auscultation is one of the basic techniques for the diagnosis of heart disease. However, the interpretation of heart sounds and murmurs is a highly subjective and difficult skill. Objectives: To assist the auscultation skill at the bedside, a handy phonocardiogram was developed using a smartphone (Samsung Galaxy J, Android OS 4.4.2) and an external microphone attached to a stethoscope. Methods and Results: The Android app used Java classes, "AudioRecord," "AudioTrack," and "View," that recorded sounds, replayed sounds, and plotted sound waves, respectively. Sound waves were visualized in real-time, simultaneously replayed on the smartphone, and saved to WAV files. To confirm the availability of the app, 26 kinds of heart sounds and murmurs sounded on a human patient simulator were recorded using three different methods: a bell-type stethoscope, a diaphragm-type stethoscope, and a direct external microphone without a stethoscope. The recorded waveforms were subjectively confirmed and were found to be similar to the reference waveforms. Conclusions: The realtime visualization of the sound waves on the smartphone may help novices to readily recognize and learn to distinguish the various heart sounds and murmurs in real-time. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
