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Author:

Xu, Ke (Xu, Ke.) | Li, Bao (Li, Bao.) | Liu, Jincheng (Liu, Jincheng.) | Chen, Mingyan (Chen, Mingyan.) | Zhang, Liyuan (Zhang, Liyuan.) | Mao, Boyan (Mao, Boyan.) | Xi, Xiaolu (Xi, Xiaolu.) | Sun, Hao (Sun, Hao.) | Zhang, Zhe (Zhang, Zhe.) | Liu, Youjun (Liu, Youjun.)

Indexed by:

EI Scopus SCIE

Abstract:

Background and Objectives: The treatment benefits of enhanced external counterpulsation (EECP) heavily depends on hemodynamics. Global hemodynamics of EECP can cause blood flow redistribution in the circulatory system whereas local hemodynamic effects act on vascular endothelial cells (VECs). Local hemodynamic effects of EECP on VECs are important in the treatment of atherosclerosis, but currently cannot be not evaluated. Herein we aim to establish evaluation models of local hemodynamic effects based on the global hemodynamic indicators. Methods: We established 0D/3D geometric multi-scale hemodynamic models of the coronary and cerebral artery of two healthy individuals to calculate the global hemodynamic indicators and the local hemodynamic effects. Clinical EECP trials were performed to verify the accuracy of the multi-scale hemodynamic model. The global hemodynamic indicators included diastolic blood pressure/systolic blood pressure (Q = D/S), mean arterial pressure (MAP), internal carotid artery flow (ICAF) and cerebral blood flow (CBF), whereas local hemodynamic effects focused on time-averaged wall shear stress (TAWSS). The correlation between these indicators was analyzed via Pearson correlation coefficient. Significantly related indicators were selected for curve-fitting to establish evaluation models of the coronary and cerebral artery. Moreover, clinical data of a coronary heart disease patient and a cerebral ischemic stroke patient were collected to verify the effectiveness of the application of the established evaluation models to real patients. Results: For coronary artery, TAWSS was correlated to Q = D/S and ICAF (P < 0.05), whereas for cerebral artery, TAWSS was correlated to MAP and CBF (P < 0.05). The mean square error (MSE) between the evaluated values using evaluation model and the calculated values using 0D/3D model of TAWSS of the coronary and cerebral artery were 5.4% and 1.0%, respectively. The MSE of evaluation model applied to real patients was greater than that applied to healthy individuals, but within an acceptable range. Conclusions: The presented error demonstrated validity and accuracy of the evaluation models in clinical patients. Based on the evaluation models, global hemodynamic indicators could be used to evaluate the local hemodynamic effects under the current counterpulsation mode. With TAWSS range of 4-7 Pa as the target range, EECP strategies can further be optimized. (C) 2021 Elsevier B.V. All rights reserved.

Keyword:

Enhanced external counterpulsation Local hemodynamic effects Global hemodynamic indicators Geometric multi-scale hemodynamic model Evaluation model

Author Community:

  • [ 1 ] [Xu, Ke]Beijing Univ Technol, Dept Biomed Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Li, Bao]Beijing Univ Technol, Dept Biomed Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Liu, Jincheng]Beijing Univ Technol, Dept Biomed Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Chen, Mingyan]Beijing Univ Technol, Dept Biomed Engn, Beijing 100124, Peoples R China
  • [ 5 ] [Zhang, Liyuan]Beijing Univ Technol, Dept Biomed Engn, Beijing 100124, Peoples R China
  • [ 6 ] [Xi, Xiaolu]Beijing Univ Technol, Dept Biomed Engn, Beijing 100124, Peoples R China
  • [ 7 ] [Sun, Hao]Beijing Univ Technol, Dept Biomed Engn, Beijing 100124, Peoples R China
  • [ 8 ] [Liu, Youjun]Beijing Univ Technol, Dept Biomed Engn, Beijing 100124, Peoples R China
  • [ 9 ] [Mao, Boyan]Beijing Univ Chinese Med, Beijing 100029, Peoples R China
  • [ 10 ] [Zhang, Zhe]Peking Univ Third Hosp, Beijing 100080, Peoples R China

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Source :

COMPUTER METHODS AND PROGRAMS IN BIOMEDICINE

ISSN: 0169-2607

Year: 2022

Volume: 214

6 . 1

JCR@2022

6 . 1 0 0

JCR@2022

ESI Discipline: COMPUTER SCIENCE;

ESI HC Threshold:46

JCR Journal Grade:1

CAS Journal Grade:2

Cited Count:

WoS CC Cited Count: 3

SCOPUS Cited Count: 5

ESI Highly Cited Papers on the List: 0 Unfold All

WanFang Cited Count:

Chinese Cited Count:

30 Days PV: 2

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