Name
Abstract | ||
|---|---|---|
Spectral analysis of Heart Rate Variability (HRV) is used for the assessment of cardiovascular autonomic control. In this study Continuous Wavelet Transform (CWT) has been used to evaluate the effect of local anesthesia on HRV parameters in a group of fourteen patients undergoing axillary brachial plexus block. A new method which takes signal characteristics into account has been presented for the estimation of the variable boundaries associated with the low and the high frequency band of the HRV signal. The variable boundary method might be useful in cases when the power related to respiration component extends beyond the traditionally excepted range of the high frequency band (0.15-0.4 Hz). The statistical analysis (non-parametric Wilcoxon signed rank test) showed that the LF/HF ratio decreased within an hour of the application of the brachial plexus block compared to the values fifteen minutes prior to the application of the block. These changes were observed in thirteen of the fourteen patients included in this study. |
Year | DOI | Venue |
|---|---|---|
2011 | 10.1109/IEMBS.2011.6091191 | 2011 ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC) |
Keywords | Field | DocType |
haemodynamics,time frequency analysis,statistical analysis,continuous wavelet transform,anesthesia,cardiovascular system,wavelet transforms,surgery,neurophysiology,high frequency,resonant frequency,heart rate variability | Frequency band,Heart rate variability,Anesthesia,Brachial plexus block,Wilcoxon signed-rank test,Continuous wavelet transform,Time–frequency analysis,Electrocardiography,Medicine,Wavelet transform | Conference |
Volume | ISSN | Citations |
2011 | 1557-170X | 1 |
PageRank | References | Authors |
0.50 | 2 | 4 |
Name | Order | Citations | PageRank |
|---|---|---|---|
| K Shafqat | 1 | 2 | 1.20 |
| S K Pal | 2 | 5 | 1.67 |
| S Kumari | 3 | 1 | 1.17 |
| P A Kyriacou | 4 | 20 | 16.60 |