Abstract
Arterial Windkessel mechanisms and arterial pressure (AP) low frequency (LF) waves were investigated by means of simple lumped models of a compliant resistant/arterial tree and of flow regulation in peripheral vascular districts (PVDs) with three types of feedback: 1) delay, 2) Van der Pol oscillator, 3) relay; all were able to actively compensate flow changes and to simulate peripheral LF vasomotion. Each PVD connected to a Windkessel compartment displayed a reduction and a disappearance of oscillations with low compliance, when the Windkessel equivalent time constant Teq fall below 2s. Two PVDs connected to the same Windkessel tended to phase opposition with a negative interference canceling their LF oscillations from AP, With a modest neural drive, cancellation was imperfect and AP waves appeared. Vasomotion, arterial compliances and neural triggers are all essential in forming LF AP variability.
| Original language | English |
|---|---|
| Title of host publication | Computers in Cardiology |
| Editors | A. Murray |
| Pages | 41-44 |
| Number of pages | 4 |
| Volume | 30 |
| Publication status | Published - 2003 |
| Event | Computers in Cardiology 2003 - Thessaloniki Chalkidiki, Greece Duration: Sep 21 2003 → Sep 24 2003 |
Other
| Other | Computers in Cardiology 2003 |
|---|---|
| Country | Greece |
| City | Thessaloniki Chalkidiki |
| Period | 9/21/03 → 9/24/03 |
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ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
- Software
Cite this
Modeling the role of arterial windkessel in the enhancement and synchronization of low frequency vasomotor activity. / Baselli, Giuseppe; Porta, A.; Pagani, M.
Computers in Cardiology. ed. / A. Murray. Vol. 30 2003. p. 41-44.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Modeling the role of arterial windkessel in the enhancement and synchronization of low frequency vasomotor activity
AU - Baselli, Giuseppe
AU - Porta, A.
AU - Pagani, M.
PY - 2003
Y1 - 2003
N2 - Arterial Windkessel mechanisms and arterial pressure (AP) low frequency (LF) waves were investigated by means of simple lumped models of a compliant resistant/arterial tree and of flow regulation in peripheral vascular districts (PVDs) with three types of feedback: 1) delay, 2) Van der Pol oscillator, 3) relay; all were able to actively compensate flow changes and to simulate peripheral LF vasomotion. Each PVD connected to a Windkessel compartment displayed a reduction and a disappearance of oscillations with low compliance, when the Windkessel equivalent time constant Teq fall below 2s. Two PVDs connected to the same Windkessel tended to phase opposition with a negative interference canceling their LF oscillations from AP, With a modest neural drive, cancellation was imperfect and AP waves appeared. Vasomotion, arterial compliances and neural triggers are all essential in forming LF AP variability.
AB - Arterial Windkessel mechanisms and arterial pressure (AP) low frequency (LF) waves were investigated by means of simple lumped models of a compliant resistant/arterial tree and of flow regulation in peripheral vascular districts (PVDs) with three types of feedback: 1) delay, 2) Van der Pol oscillator, 3) relay; all were able to actively compensate flow changes and to simulate peripheral LF vasomotion. Each PVD connected to a Windkessel compartment displayed a reduction and a disappearance of oscillations with low compliance, when the Windkessel equivalent time constant Teq fall below 2s. Two PVDs connected to the same Windkessel tended to phase opposition with a negative interference canceling their LF oscillations from AP, With a modest neural drive, cancellation was imperfect and AP waves appeared. Vasomotion, arterial compliances and neural triggers are all essential in forming LF AP variability.
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UR - http://www.scopus.com/inward/citedby.url?scp=4143050195&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:4143050195
VL - 30
SP - 41
EP - 44
BT - Computers in Cardiology
A2 - Murray, A.
ER -