Artery Research

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Volume 10, Issue C, June 2015, Pages 38 - 41

A new teaching model of the systemic circulation that incorporates reservoir characteristics

Authors
John V. Tyberga, *, J. Christopher Bouwmeesterb, Lindsay M. Burrowesa, Kim H. Parkerc, Nigel G. Shrived, Jiun-Jr. Wange
aDepartments of Cardiac Sciences and Physiology/Pharmacology and Libin Cardiovascular Institute of Alberta, Canada
bDepartment of Surgery, Yale University, New Haven, CT, USA
cDepartment of Bioengineering, Imperial College London, UK
dDepartment of Civil Engineering, Schulich School of Engineering, University of Calgary, Canada
eDepartment of Medicine, Fu Jen Catholic University, New Taipei City, Taiwan
*Corresponding author. Cumming School of Medicine, University of Calgary, GAA18, Health Research Innovation Centre (HRIC), 3280 Hospital Drive NW, Calgary, AB T2N 4Z6, Canada. Tel.: +1 403 220 6866. E-mail address: jtyberg@ucalgary.ca (J.V. Tyberg).
Corresponding Author
John V. Tyberg
Received 8 December 2014, Revised 6 February 2015, Accepted 9 February 2015, Available Online 24 February 2015.
DOI
10.1016/j.artres.2015.02.001How to use a DOI?
Keywords
Wave intensity analysis; Hydraulic model; Systemic circulation; Arterial-ventricular coupling; Elastance; Compliance
Abstract

A hydraulic teaching model of the human systemic circulation is proposed, based on the principles of the reservoir-wave approach. Reservoir characteristics are portrayed by the arterial tall-and-narrow and venous short-and-wide columns, the relative compliances of which are signified by their diameters. Wave characteristics are represented by proximal arterial and venous resistances; rapid left ventricular ejection and rapid right atrial filling cause flow-dependent pressure drops across the respective resistances. (The value of the proximal arterial resistance is numerically equal to the characteristic impedance.) The pressure drop across the proximal arterial resistance, excess pressure, is understood to be fundamentally wave-related and has been shown to be a measure of the efficiency of cardiac-vascular coupling. Excess pressure also predicts an incremental risk of cardiovascular morbidity and largely accounts for the hysteresis evidenced by an open aortic pressure-volume loop.

Copyright
© 2015 Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved.
Open Access
This is an open access article distributed under the CC BY-NC license.

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<Previous Article In Issue
Journal
Artery Research
Volume-Issue
10 - C
Pages
38 - 41
Publication Date
2015/02/24
ISSN (Online)
1876-4401
ISSN (Print)
1872-9312
DOI
10.1016/j.artres.2015.02.001How to use a DOI?
Copyright
© 2015 Association for Research into Arterial Structure and Physiology. Published by Elsevier B.V. All rights reserved.
Open Access
This is an open access article distributed under the CC BY-NC license.

Cite this article

risenwbib
TY  - JOUR
AU  - John V. Tyberg
AU  - J. Christopher Bouwmeester
AU  - Lindsay M. Burrowes
AU  - Kim H. Parker
AU  - Nigel G. Shrive
AU  - Jiun-Jr. Wang
PY  - 2015
DA  - 2015/02/24
TI  - A new teaching model of the systemic circulation that incorporates reservoir characteristics
JO  - Artery Research
SP  - 38
EP  - 41
VL  - 10
IS  - C
SN  - 1876-4401
UR  - https://doi.org/10.1016/j.artres.2015.02.001
DO  - 10.1016/j.artres.2015.02.001
ID  - Tyberg2015
ER  -