التفاصيل البيبلوغرافية
| العنوان: |
Development of a Compact Home Health Monitor for Telemedicine. |
| المؤلفون: |
Gilwon Yoon, Jong Yeon Lee, Kye Jin Jeon, Kun Kook Park, Hong Sig Kim |
| المصدر: |
Telemedicine & e-Health; Dec2005, Vol. 11 Issue 6, p660-667, 8p |
| مصطلحات موضوعية: |
TELEMEDICINE, ERYTHROCYTES, BLOOD pressure, BLOOD cells |
| مستخلص: |
A compact and easy-to-use home health monitor was developed. A palm-size health monitorcontained a finger probe as sensor unit. In the finger probe, light from a light emitting diode(LED) array was illuminated on a finger nail bed, and transmitted light was measured to obtainphotoplethysmography (PPG) signals. Hematocrit, pulse, respiration rate, and saturatedoxygen in arterial blood (SpO2) were measured simultaneously from PPGs using five differentwavelengths: 569, 660, 805, 904, and 975 nm. To predict hematocrit, a dedicated algorithmwas used based on scattering theory of red blood cells using these wavelengths. Preliminaryclinical tests showed that the achieved percent errors were ± 8.2% for hematocrit when testedwith 549 persons (N = 549). Digital filtering techniques were used to extract respiratory informationfrom a single PPG signal. SpO2 was predicted on the basis of the ratio of the wavelengths660 nm and 940 nm. The accuracies were within clinically acceptable errors. In addition,the compact home health monitor included a blood pressure monitoring unit. Forconvenient and simultaneous measurement with the other previously mentioned signals,blood pressure was measured on a finger. An air cuff was installed on the same finger wherePPGs were measured. Achieved mean differences were ± 3.8 mmHg for systole and ± 5.1mmHg for diastole. One can use the palm-size monitor simply by inserting a finger into thehome health monitor that is suitable for telemedicine. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
Complementary Index |
