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Comparing Different Recording Lengths of Dynamic Cerebral Autoregulation: 5 versus 10 Minutes
We compared the dynamic cerebral autoregulation (dCA) indices between 5- and 10-minute data lengths by analyzing 37 patients with ischemic stroke and 51 controls in this study. Correlation coefficient (Mx) and transfer function analysis were applied for dCA analysis. Mx and phase shift in all freque...
Autores principales: | , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Hindawi
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5831790/ https://www.ncbi.nlm.nih.gov/pubmed/29662898 http://dx.doi.org/10.1155/2018/7803426 |
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author | Chi, Nai-Fang Wang, Cheng-Yen Chan, Lung Hu, Han-Hwa |
author_facet | Chi, Nai-Fang Wang, Cheng-Yen Chan, Lung Hu, Han-Hwa |
author_sort | Chi, Nai-Fang |
collection | PubMed |
description | We compared the dynamic cerebral autoregulation (dCA) indices between 5- and 10-minute data lengths by analyzing 37 patients with ischemic stroke and 51 controls in this study. Correlation coefficient (Mx) and transfer function analysis were applied for dCA analysis. Mx and phase shift in all frequency bands were not significantly different between 5- and 10-minute recordings [mean difference: Mx = 0.02; phase shift of very low frequency (0.02–0.07 Hz) = 0.3°, low frequency (0.07–0.20 Hz) = 0.6°, and high frequency (0.20–0.50 Hz) = 0.1°]. However, the gains in all frequency bands of a 5-minute recording were slightly but significantly higher than those of a 10-minute recording (mean difference of gain: very low frequency = 0.05 cm/s/mmHg, low frequency = 0.11 cm/s/mmHg, and high frequency = 0.14 cm/s/mmHg). The intraclass correlation coefficients between all dCA indices of 5- and 10-minute recordings were favorable, especially in Mx (0.93), phase shift in very low frequency (0.87), and gain in very low frequency (0.94). The areas under the receiver operating characteristic curve for stroke diagnosis between 5- and 10-minute recordings were not different. We concluded that dCA assessed by using a 5-minute recording is not significantly different from that using a 10-minute recording in the clinical application. |
format | Online Article Text |
id | pubmed-5831790 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Hindawi |
record_format | MEDLINE/PubMed |
spelling | pubmed-58317902018-04-16 Comparing Different Recording Lengths of Dynamic Cerebral Autoregulation: 5 versus 10 Minutes Chi, Nai-Fang Wang, Cheng-Yen Chan, Lung Hu, Han-Hwa Biomed Res Int Research Article We compared the dynamic cerebral autoregulation (dCA) indices between 5- and 10-minute data lengths by analyzing 37 patients with ischemic stroke and 51 controls in this study. Correlation coefficient (Mx) and transfer function analysis were applied for dCA analysis. Mx and phase shift in all frequency bands were not significantly different between 5- and 10-minute recordings [mean difference: Mx = 0.02; phase shift of very low frequency (0.02–0.07 Hz) = 0.3°, low frequency (0.07–0.20 Hz) = 0.6°, and high frequency (0.20–0.50 Hz) = 0.1°]. However, the gains in all frequency bands of a 5-minute recording were slightly but significantly higher than those of a 10-minute recording (mean difference of gain: very low frequency = 0.05 cm/s/mmHg, low frequency = 0.11 cm/s/mmHg, and high frequency = 0.14 cm/s/mmHg). The intraclass correlation coefficients between all dCA indices of 5- and 10-minute recordings were favorable, especially in Mx (0.93), phase shift in very low frequency (0.87), and gain in very low frequency (0.94). The areas under the receiver operating characteristic curve for stroke diagnosis between 5- and 10-minute recordings were not different. We concluded that dCA assessed by using a 5-minute recording is not significantly different from that using a 10-minute recording in the clinical application. Hindawi 2018-01-31 /pmc/articles/PMC5831790/ /pubmed/29662898 http://dx.doi.org/10.1155/2018/7803426 Text en Copyright © 2018 Nai-Fang Chi et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. |
spellingShingle | Research Article Chi, Nai-Fang Wang, Cheng-Yen Chan, Lung Hu, Han-Hwa Comparing Different Recording Lengths of Dynamic Cerebral Autoregulation: 5 versus 10 Minutes |
title | Comparing Different Recording Lengths of Dynamic Cerebral Autoregulation: 5 versus 10 Minutes |
title_full | Comparing Different Recording Lengths of Dynamic Cerebral Autoregulation: 5 versus 10 Minutes |
title_fullStr | Comparing Different Recording Lengths of Dynamic Cerebral Autoregulation: 5 versus 10 Minutes |
title_full_unstemmed | Comparing Different Recording Lengths of Dynamic Cerebral Autoregulation: 5 versus 10 Minutes |
title_short | Comparing Different Recording Lengths of Dynamic Cerebral Autoregulation: 5 versus 10 Minutes |
title_sort | comparing different recording lengths of dynamic cerebral autoregulation: 5 versus 10 minutes |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5831790/ https://www.ncbi.nlm.nih.gov/pubmed/29662898 http://dx.doi.org/10.1155/2018/7803426 |
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