Breakdown of scaling properties in abnormal heart rate variability
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| Format: | Artículo científico |
| Sprache: | en |
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Universidad Nacional Autónoma de México
2006
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| _version_ | 1876454886891061248 |
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| author | M. Meraz |
| author_facet | M. Meraz |
| contents | Breakdown of scaling properties in abnormal heart rate variability M. Meraz E. Rodríguez A. De Luca J. Alvarez Ingeniería Breakdown Scaling Properties Frequency Response Heart Rate Variability The heart rate variability (HRV) of subjects with normal sinus rhythm (NSR) and subjects with congestive heart failure(CHF) is compared by using a structure function borrowed from turbulence studies. Firstly, it is shown that the HRV ofsubjects with NSR displays a power law scaling property, which indicates the presence of structured heartbeat controlmechanisms. Secondly, it is found that such a scaling property is partially lost for subjects with CHF. The absence ofscaling properties is associated to the presence of uncorrelated (i.e., noise-like) heart rate variations. In order to gaininsights on the source of the scaling property, the HRV is analyzed from a systemic (i.e., feedback control) viewpoint inthe frequency domain. It is found that the HRV of subjects with NSR is governed by a stable adaptive control mechanismpresumably located in the autonomic nervous system. In the case of subjects with CHF, the results show that thisregulation mechanism is partially or totally absent, which is interpreted as the cause of the breakdown of the scalinglaw property. 2006 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47440107 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.1 Vol.4 |
| format | Artículo científico |
| id | redalyc_47440107 |
| institution | Redalyc |
| language | en |
| publishDate | 2006 |
| publisher | Universidad Nacional Autónoma de México |
| spellingShingle | Breakdown of scaling properties in abnormal heart rate variability M. Meraz Ingeniería Breakdown Scaling Properties Frequency Response Heart Rate Variability Breakdown of scaling properties in abnormal heart rate variability M. Meraz E. Rodríguez A. De Luca J. Alvarez Ingeniería Breakdown Scaling Properties Frequency Response Heart Rate Variability The heart rate variability (HRV) of subjects with normal sinus rhythm (NSR) and subjects with congestive heart failure(CHF) is compared by using a structure function borrowed from turbulence studies. Firstly, it is shown that the HRV ofsubjects with NSR displays a power law scaling property, which indicates the presence of structured heartbeat controlmechanisms. Secondly, it is found that such a scaling property is partially lost for subjects with CHF. The absence ofscaling properties is associated to the presence of uncorrelated (i.e., noise-like) heart rate variations. In order to gaininsights on the source of the scaling property, the HRV is analyzed from a systemic (i.e., feedback control) viewpoint inthe frequency domain. It is found that the HRV of subjects with NSR is governed by a stable adaptive control mechanismpresumably located in the autonomic nervous system. In the case of subjects with CHF, the results show that thisregulation mechanism is partially or totally absent, which is interpreted as the cause of the breakdown of the scalinglaw property. 2006 artículo científico 1665-6423 https://www.redalyc.org/articulo.oa?id=47440107 en http://www.redalyc.org/revista.oa?id=474 Journal of Applied Research and Technology application/pdf Universidad Nacional Autónoma de México Journal of Applied Research and Technology (México) Num.1 Vol.4 |
| title | Breakdown of scaling properties in abnormal heart rate variability |
| topic | Ingeniería Breakdown Scaling Properties Frequency Response Heart Rate Variability |
| url | https://www.redalyc.org/articulo.oa?id=47440107 |