Abstract
The Modelflow method (MM) requires the recording of the aortic pressure signal, to compute cardiac output (CO) by simulating a non-linear three-element model of aortic input impedance. We propose an extended MM to be applied to the intraventricular pressure signal, to obtain an independent estimation of CO in the setting of conductance measurements. Hemodynamic tests were performed in 21 patients with heart failure during atriobiventricular pacing. Comparing CO by extended MM simulation with standard MM, the bias was -0.04 (0.36) l/min, with limits of agreement of -0.77 and 0.70 l/min, and a coefficient of variation of 8.4%. In patients without mitral and aortic abnormalities, the continuous CO estimation with the proposed method seems reliable. This method presents an acceptable precision to replace conventional aortic MM estimation in subjects undergoing intraventricular pressure acquisition, such as during conductance catheter evaluation.
| Original language | English |
|---|---|
| Title of host publication | Computers in Cardiology |
| Pages | 885-888 |
| Number of pages | 4 |
| Volume | 33 |
| Publication status | Published - 2006 |
| Event | 2006 Computers in Cardiology, CIC - Valencia, Spain Duration: Sep 17 2006 → Sep 20 2006 |
Other
| Other | 2006 Computers in Cardiology, CIC |
|---|---|
| Country | Spain |
| City | Valencia |
| Period | 9/17/06 → 9/20/06 |
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ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
- Software
Cite this
Estimation of cardiac output from left ventricular pressure by a modified modelflow method. / Valsecchi, Sergio; Perego, G. B.; Censi, F.; Schreuder, J. J.
Computers in Cardiology. Vol. 33 2006. p. 885-888 4511994.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Estimation of cardiac output from left ventricular pressure by a modified modelflow method
AU - Valsecchi, Sergio
AU - Perego, G. B.
AU - Censi, F.
AU - Schreuder, J. J.
PY - 2006
Y1 - 2006
N2 - The Modelflow method (MM) requires the recording of the aortic pressure signal, to compute cardiac output (CO) by simulating a non-linear three-element model of aortic input impedance. We propose an extended MM to be applied to the intraventricular pressure signal, to obtain an independent estimation of CO in the setting of conductance measurements. Hemodynamic tests were performed in 21 patients with heart failure during atriobiventricular pacing. Comparing CO by extended MM simulation with standard MM, the bias was -0.04 (0.36) l/min, with limits of agreement of -0.77 and 0.70 l/min, and a coefficient of variation of 8.4%. In patients without mitral and aortic abnormalities, the continuous CO estimation with the proposed method seems reliable. This method presents an acceptable precision to replace conventional aortic MM estimation in subjects undergoing intraventricular pressure acquisition, such as during conductance catheter evaluation.
AB - The Modelflow method (MM) requires the recording of the aortic pressure signal, to compute cardiac output (CO) by simulating a non-linear three-element model of aortic input impedance. We propose an extended MM to be applied to the intraventricular pressure signal, to obtain an independent estimation of CO in the setting of conductance measurements. Hemodynamic tests were performed in 21 patients with heart failure during atriobiventricular pacing. Comparing CO by extended MM simulation with standard MM, the bias was -0.04 (0.36) l/min, with limits of agreement of -0.77 and 0.70 l/min, and a coefficient of variation of 8.4%. In patients without mitral and aortic abnormalities, the continuous CO estimation with the proposed method seems reliable. This method presents an acceptable precision to replace conventional aortic MM estimation in subjects undergoing intraventricular pressure acquisition, such as during conductance catheter evaluation.
UR - http://www.scopus.com/inward/record.url?scp=50149113688&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=50149113688&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:50149113688
SN - 1424425328
SN - 9781424425327
VL - 33
SP - 885
EP - 888
BT - Computers in Cardiology
ER -