Comparing cross-sample entropy and k-nearest-neighbor cross-predictability approaches for the evaluation of cardiorespiratory and cerebrovascular dynamic interactions
Contributo in Atti di convegno
Data di Pubblicazione:
2022
Citazione:
Comparing cross-sample entropy and k-nearest-neighbor cross-predictability approaches for the evaluation of cardiorespiratory and cerebrovascular dynamic interactions / A. Porta, V. Bari, F. Gelpi, B. Cairo, B. De Maria, D. Tonon, G. Rossato, L. Faes (IEEE ENGINEERING IN MEDICINE AND BIOLOGY ... ANNUAL CONFERENCE PROCEEDINGS). - In: 2022 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)[s.l] : IEEE Press, 2022. - ISBN 978-1-7281-2783-5. - pp. 127-130 (( Intervento presentato al 44. convegno Annual International Conference of the IEEE EMBS tenutosi a Glasgow nel 2022 [10.1109/EMBC48229.2022.9871239].
Abstract:
Quantification of the cardiorespiratory and cerebrovascular couplings is a relevant clinical issue given that their changes are considered signs of pathological status. The inherent nonlinearity of mechanisms underlying cardiorespiratory and cerebrovascular links requires nonlinear tools for their reliable evaluation. In the present study we compare two nonlinear methods for the assessment of coupling strength between two time series, namely cross-sample entropy (CSampEn) and k-nearest-neighbor cross-predictability (KNNCP). CSampEn uses a strategy that fixes the pattern length, while KNNCP optimizes the pattern length to maximize cross-predictability. CSampEn and KNNCP were applied to the beat-to-beat series of heart period (HP) and respiration (R) during a controlled breathing protocol with the aim at assessing cardiorespiratory coupling and to the beat-to-beat series of mean cerebral blood flow (MCBF) and mean arterial pressure (MAP) during an orthostatic stressor with the aim at evaluating cerebrovascular coupling. Although both the methods have the possibility to quantify the degree of HP-R and MCBF-MAP association, they exhibited different statistical power and even diverse trends in response to the considered physiological challenges. CSampEn and KNNCP are not interchangeable and should be utilized in association more than in alternative for the quantification of the HP-R and MCBF-MAP coupling strength. Clinical Relevance - This study proves that cross-entropy and cross-predictability might lead to different conclusions about cardiorespiratory and cerebrovascular couplings.
Tipologia IRIS:
03 - Contributo in volume
Elenco autori:
A. Porta, V. Bari, F. Gelpi, B. Cairo, B. De Maria, D. Tonon, G. Rossato, L. Faes
Link alla scheda completa:
Titolo del libro:
2022 44th Annual International Conference of the IEEE Engineering in Medicine & Biology Society (EMBC)