A low-cost, high-fidelity FM wireless precordial radiostethoscope for continuous monitoring of heart and breath sounds
| Autor: | Jonathan L. Benumof, George T. Ozaki, Alan R. Mizutani |
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| Rok vydání: | 1990 |
| Předmět: |
Stethoscope
Computer science Radio Waves Acoustics Health Informatics Precordial examination Critical Care and Intensive Care Medicine law.invention High fidelity Signal-to-noise ratio law Wireless Humans Telemetry Sound quality Respiratory Sounds business.industry Continuous monitoring General Engineering Equipment Design Anesthesiology and Pain Medicine Heart Sounds Precordial stethoscope business Filtration Heart Auscultation |
| Zdroj: | Journal of clinical monitoring. 6(1) |
| ISSN: | 0748-1977 |
| Popis: | We constructed and tested an inexpensive (less than S50) FM wireless, acoustically shielded, precordial radiostethoscope that enables the anesthetist to follow the heart tones and breath sounds of the patient regardless of the anesthetist’s location in the operating room. We compared our acoustically shielded device with a similar, but acoustically unshielded, commercially available device. We found the sound quality of our radiostethoscope to be superior to that of the commercial device; the signal-to-noise ratio of our device was 7.6 for heart tones and 8.4 for breath sounds, whereas the commercial device had a signal-to-noise ratio of 2.7 and 3.9 for heart tones and breath sounds, respectively. Our device offers all of the advantages of a radiostethoscope and has the added advantages of low cost and high fidelity. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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