An Evaluation Method for Heart Rate Variability, by Using Acceleration Plethysmography
| Autor: | Kazuo Okino, Yumiko Niwa, Haruko Takada |
|---|---|
| Rok vydání: | 2004 |
| Předmět: | |
| Zdroj: | Health evaluation and promotion. 31:547-551 |
| ISSN: | 1884-4103 1347-0086 |
| DOI: | 10.7143/jhep.31.547 |
| Popis: | Objects We have recently developed a new type of acceleration plethysmography (APG) machine and software. This APG system functions to indicate heart rate variability, by using the coefficient of the variation of the a-a intervals (CVaa%) . We tried to evaluate the validity of the APG system to estimate heart rate variability, instead of using ECG.Methods We simultaneously recorded an ECG and an APG by using a 2-channel APG system. We examined the difference between the a-a intervals (Taa) of an APG and the R-R interval of an ECG. Next, APG waveforms of 121 healthy people and 26 diabetics were recorded, and the mean CVaa% in each age category for healthy people and diabetics were calculated.Results 1) All differences between the Taa and the R-R interval were within 10 msec., and the multiple correlation coefficient was 0.999175.2) The mean CVaa% was 0.2 to 1.5% bigger than the mean coefficient of the variation of the R-R intervals (CVRR%) in all age categories. 3) The mean CVaa% decreased by age. 4) In ages 40-60, mean CVaa% of diabetics was significantly lower than that of healthy people.Conclusion The APG system is suitable to estimate heart rate variability. And, when we want to evaluate heart rate variability by CVaa% of an APG in stead of CVRR% of an ECG, a standard value of CVaa% in each age is necessary. The APG system has some possibilities for explanation of a mechanism of autonomic-nerve-related diseases. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|