Abstract
Purpose
Lumped parameter modelling has been widely used to simulate cardiac function and physiological scenarios in cardiovascular research. Whereas several patient-specific lumped parameter models have been reported for adults, there is a limited number of studies aiming to simulate cardiac function in children. The aim of this study is to simulate patient-specific cardiovascular dynamics in children diagnosed with dilated cardiomyopathy, using a lumped parameter model.
Methods
Patient data including age, gender, heart rate, left and right ventricular end-systolic and end-diastolic volumes, cardiac output, systolic and diastolic aortic pressures were collected from 3 patients at Great Ormond Street Hospital for Children, London, UK. Ventricular geometrical data were additionally retrieved from cardiovascular magnetic resonance images. 23 parameters in the lumped parameter model were optimised to simulate systolic and diastolic pressures, end-systolic and end-diastolic volumes, cardiac output and left and right ventricular diameters in the patients using a direct search optimisation method.
Results
Difference between the haemodynamic parameters in the optimised cardiovascular system models and clinical data was less than 10%.
Conclusion
The simulation results show the potential of patient-specific lumped parameter modelling to simulate clinical cases. Modelling patient specific cardiac function and blood flow in the paediatric patients would allow us to evaluate a variety of physiological scenarios and treatment options.
Lumped parameter modelling has been widely used to simulate cardiac function and physiological scenarios in cardiovascular research. Whereas several patient-specific lumped parameter models have been reported for adults, there is a limited number of studies aiming to simulate cardiac function in children. The aim of this study is to simulate patient-specific cardiovascular dynamics in children diagnosed with dilated cardiomyopathy, using a lumped parameter model.
Methods
Patient data including age, gender, heart rate, left and right ventricular end-systolic and end-diastolic volumes, cardiac output, systolic and diastolic aortic pressures were collected from 3 patients at Great Ormond Street Hospital for Children, London, UK. Ventricular geometrical data were additionally retrieved from cardiovascular magnetic resonance images. 23 parameters in the lumped parameter model were optimised to simulate systolic and diastolic pressures, end-systolic and end-diastolic volumes, cardiac output and left and right ventricular diameters in the patients using a direct search optimisation method.
Results
Difference between the haemodynamic parameters in the optimised cardiovascular system models and clinical data was less than 10%.
Conclusion
The simulation results show the potential of patient-specific lumped parameter modelling to simulate clinical cases. Modelling patient specific cardiac function and blood flow in the paediatric patients would allow us to evaluate a variety of physiological scenarios and treatment options.
Original language | English |
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Pages (from-to) | 712-724 |
Number of pages | 13 |
Journal | Cardiovascular Engineering and Technology |
Volume | 13 |
Issue number | 5 |
Early online date | 22 Feb 2022 |
DOIs | |
Publication status | Published online - 22 Feb 2022 |
Bibliographical note
Publisher Copyright:© 2022, The Author(s).
Funding Information:
The authors received no specific funding for this work. The authors declare no conflict of interest. Data was analysed in accordance with the guidelines laid out in the Declaration of Helsinki. Ethical approval was obtained for the use of image data for research purposes (UK REC 06/Q0508/124). All parents/guardians gave written informed consent to participate in this study.
Publisher Copyright:
© 2022, The Author(s).
Keywords
- Lumped parameter model
- Patient-specific cardiac function
- Dilated cardiomyopathy
- Paediatrics