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Patient-specific Modeling of the Heart: Estimation of Ventricular Fiber Orientations
Published on: January 8, 2013
Assessment of ventricular contractility and ventricular-arterial coupling with a model-based sensor
Thomas Desaive1, Bernard Lambermont, Nathalie Janssen
1Cardiovascular Research Center, University of Liege, Liege, Belgium. tdesaive@ulg.ac.be
Computer Methods and Programs in Biomedicine
|February 7, 2012
Summary
This study developed a model to assess right ventricular arterial coupling in septic shock, offering a less invasive alternative to traditional methods. The model shows good agreement with clinical assessments, paving the way for real-time monitoring in ICUs.
Area of Science:
- Cardiovascular Physiology
- Critical Care Medicine
- Biomedical Engineering
Background:
- Assessing ventricular contractility and coupling is vital for critically ill patients.
- Current methods are invasive and not ICU-friendly.
Purpose of the Study:
- To evaluate right ventricular arterial coupling in septic shock using a validated cardiovascular model.
- To compare model-based assessments with gold-standard clinical methods.
Main Methods:
- Utilized a validated cardiovascular system model and parameter identification.
- Induced septic shock in pigs via endotoxin infusion.
- Compared model-derived metrics (E(esrvf), E(pa), R(pulin)) with conductance catheter data.
Main Results:
- Model-based right ventricular elastance (E(esrvf)) showed good correlation with the gold standard (R(2)=0.69).
- Non-invasive coupling metrics followed similar trends to clinical assessments (R(2)=0.37).
Conclusions:
- Model-based assessment of ventricular arterial coupling is feasible and accurate.
- This approach holds potential for developing real-time, non-invasive monitoring tools in clinical settings.
