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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...

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Autores principales: Chi, Nai-Fang, Wang, Cheng-Yen, Chan, Lung, Hu, Han-Hwa
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2018
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.
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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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