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A Review on Human Respiratory Modeling.

Pardis Ghafarian1, Hamidreza Jamaati2, Seyed Mohammadreza Hashemian3

  • 1Chronic Respiratory Diseases Research Center, National Research Institute of Tuberculosis and Lung Diseases (NRITLD), Shahid Beheshti University of Medical Sciences, Tehran, Iran,; PET/CT and Cyclotron Center, NRITLD, Shahid Beheshti University of Medical Sciences, Tehran, Iran.

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Summary

This review explores electromechanical models of respiratory impedance measured by the forced oscillation technique (FOT). It examines various models for assessing obstructive, restrictive diseases, and Acute Respiratory Distress Syndrome (ARDS).

Keywords:
ComplianceForced oscillation techniqueRespiratory impedanceRespiratory modelingRespiratory reactanceRespiratory resistance

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Area of Science:

  • Pulmonary Physiology
  • Biomedical Engineering
  • Respiratory Mechanics

Background:

  • The input impedance of the respiratory system is commonly measured using the forced oscillation technique (FOT).
  • Electromechanical models are frequently employed to interpret respiratory impedance data, drawing parallels between respiratory mechanics and electrical circuits.
  • Existing models may simplify the complex pulmonary-chest wall anatomy, potentially using fewer elements than anatomically required.

Approach:

  • This article reviews established electromechanical models of the respiratory system.
  • The review focuses on models used to analyze data from both children and adults.
  • Specific attention is given to models relevant for obstructive diseases, restrictive diseases, and Acute Respiratory Distress Syndrome (ARDS).

Key Points:

  • Respiratory system impedance can be modeled using electrical circuit analogies (series and parallel combinations).
  • Model complexity is often constrained by the intricate nature of pulmonary-chest wall anatomy.
  • A variety of models exist to assess respiratory system function in different patient populations and conditions.

Conclusions:

  • The review synthesizes knowledge on electromechanical modeling of respiratory impedance.
  • Understanding these models is crucial for diagnosing and managing various respiratory conditions.
  • This work provides a foundation for further research into more accurate and comprehensive respiratory models.