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Medical Devices for Respiratory Dysfunction: Principles and Modeling of Continuous Positive Airway Pressure (CPAP)

By
Ahmed M. Al-Jumaily
Ahmed M. Al-Jumaily
Institute of Biomedical Technologies,
Auckland University of Technology
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ISBN:
9780791859773
No. of Pages:
248
Publisher:
ASME Press
Publication date:
2012

This chapter provides an introduction to the structure, function, and mechanics of the respiratory system, before proceeding to discuss existing models in the literature that have been developed to answer a variety of questions on respiratory performance. The procedure of developing a validated lumped parameter mathematical model of a non-linear biological system such as the lung is described, and its implementation in the Simulink™ environment is also elaborated on. This is followed by an explanation of how such a model can be integrated with a model of a respiratory device (such as the Bubble CPAP system developed in Chapter 8)...

9.1 Respiratory System Structure and Function
9.1.1 Anatomy
9.1.2 Inspiration, Expiration, and the Respiratory Muscles
9.1.3 Respiratory Volumes and Capacities
9.2 Respiratory Mechanics
9.2.1 Airway Resistance
9.2.2 Compliance
9.2.3 Impedance
9.2.4 Alveolar Surface Tension
9.2.5 Work of Breath
9.3 Modeling Respiratory System Dynamics
9.3.1 Morphometric Models
9.3.2 Mechanical Models
9.3.3 Summary
9.4 Model Development
9.4.1 Model Assumptions
9.4.2 Model Derivation
9.4.3 Mass Flow Rate Expressions
9.4.4 Lobe Dynamics
9.4.5 The Pleural Compartment and Chest Wall
9.5 Simulink™ Model
9.6 Model Validation
9.7 Predictions of Pressure Oscillation Transmission Through the Tracheobronchial Tree
9.8 Closure
References
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