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 |
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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 |
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Country/Territory | Spain |
City | Valencia |
Period | 9/17/06 → 9/20/06 |
ASJC Scopus subject areas
- Cardiology and Cardiovascular Medicine
- Software