Abstract
Simulations are performed in order to analyze the tendency of oscillating peripheral vascular districts (PVDs) to maintain equal phases thus inducing low frequency (LF) waves in systemic arterial pressure (AP). A PVD model regulating the local flow by means of a delayed non-linear feedback displayed spontaneous oscillations with a 12 sec period in the pressure range (40 -150 mmHg) of active flow compensation. Two identical PVDs loading the same Windkessel compartment could oscillate in phase inducing significant (10% of mean) AP waves; however, this behavior was unstable. On the contrary, phase opposition (without AP waves) was stable and corresponded to an energetic minimum (-9% compared to the unstable solution). The introduction of either baroreflex mechanisms or a central drive was able to steadily align the PVD phases. Vasomotion synchronization can be a powerful modulation mechanism of LF waves in systemic AP.
| Original language | English |
|---|---|
| Title of host publication | Computers in Cardiology |
| Editors | A. Murray |
| Pages | 49-52 |
| Number of pages | 4 |
| Volume | 29 |
| Publication status | Published - 2002 |
| Event | Computers in Cardiology 2002 - Memphis, TN, United States Duration: Sep 22 2002 → Sep 25 2002 |
Other
| Other | Computers in Cardiology 2002 |
|---|---|
| Country | United States |
| City | Memphis, TN |
| Period | 9/22/02 → 9/25/02 |
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ASJC Scopus subject areas
- Software
- Cardiology and Cardiovascular Medicine
Cite this
Simulating the interactions among vasomotion waves of peripheral vascular districts. / Baselli, Giuseppe; Porta, A.
Computers in Cardiology. ed. / A. Murray. Vol. 29 2002. p. 49-52.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Simulating the interactions among vasomotion waves of peripheral vascular districts
AU - Baselli, Giuseppe
AU - Porta, A.
PY - 2002
Y1 - 2002
N2 - Simulations are performed in order to analyze the tendency of oscillating peripheral vascular districts (PVDs) to maintain equal phases thus inducing low frequency (LF) waves in systemic arterial pressure (AP). A PVD model regulating the local flow by means of a delayed non-linear feedback displayed spontaneous oscillations with a 12 sec period in the pressure range (40 -150 mmHg) of active flow compensation. Two identical PVDs loading the same Windkessel compartment could oscillate in phase inducing significant (10% of mean) AP waves; however, this behavior was unstable. On the contrary, phase opposition (without AP waves) was stable and corresponded to an energetic minimum (-9% compared to the unstable solution). The introduction of either baroreflex mechanisms or a central drive was able to steadily align the PVD phases. Vasomotion synchronization can be a powerful modulation mechanism of LF waves in systemic AP.
AB - Simulations are performed in order to analyze the tendency of oscillating peripheral vascular districts (PVDs) to maintain equal phases thus inducing low frequency (LF) waves in systemic arterial pressure (AP). A PVD model regulating the local flow by means of a delayed non-linear feedback displayed spontaneous oscillations with a 12 sec period in the pressure range (40 -150 mmHg) of active flow compensation. Two identical PVDs loading the same Windkessel compartment could oscillate in phase inducing significant (10% of mean) AP waves; however, this behavior was unstable. On the contrary, phase opposition (without AP waves) was stable and corresponded to an energetic minimum (-9% compared to the unstable solution). The introduction of either baroreflex mechanisms or a central drive was able to steadily align the PVD phases. Vasomotion synchronization can be a powerful modulation mechanism of LF waves in systemic AP.
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M3 - Conference contribution
AN - SCOPUS:0036950825
VL - 29
SP - 49
EP - 52
BT - Computers in Cardiology
A2 - Murray, A.
ER -