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Analysis of the respiratory dynamics during normal breathing by means of Pseudophase plots and pressure-volume loops

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Abstract
This paper reports on the analysis of tidal breathing patterns measured during noninvasive forced oscillation lung function tests in six individual groups. The three adult groups were healthy, with prediagnosed chronic obstructive pulmonary disease, and with prediagnosed kyphoscoliosis, respectively. The three children groups were healthy, with prediagnosed asthma, and with prediagnosed cystic fibrosis, respectively. The analysis is applied to the pressure-volume curves and the pseudophase-plane loop by means of the box-counting method, which gives a measure of the area within each loop. The objective was to verify if there exists a link between the area of the loops, power-law patterns, and alterations in the respiratory structure with disease. We obtained statistically significant variations between the data sets corresponding to the six groups of patients, showing also the existence of power-law patterns. Our findings support the idea that the respiratory system changes with disease in terms of airway geometry and tissue parameters, leading, in turn, to variations in the fractal dimension of the respiratory tree and its dynamics.
Keywords
CYSTIC-FIBROSIS, FORCED OSCILLATION TECHNIQUE, LUNG-TISSUE, SYSTEM, VISCOELASTICITY, INFLAMMATION, GEOMETRY, CHILDREN, MODEL, Correlation, delay, forced oscillation, fractal dimension, geometrical mapping, homothety factor, lung function test, phase plot, respiratory impedance

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Chicago
Ionescu, Clara-Mihaela, JA Tenreiro Machado, and Robain De Keyser. 2013. “Analysis of the Respiratory Dynamics During Normal Breathing by Means of Pseudophase Plots and Pressure-volume Loops.” Ieee Transactions on Systems Man and Cybernetics Part A-systems and Humans 43 (1): 53–62.
APA
Ionescu, C.-M., Tenreiro Machado, J., & De Keyser, R. (2013). Analysis of the respiratory dynamics during normal breathing by means of Pseudophase plots and pressure-volume loops. IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART A-SYSTEMS AND HUMANS, 43(1), 53–62.
Vancouver
1.
Ionescu C-M, Tenreiro Machado J, De Keyser R. Analysis of the respiratory dynamics during normal breathing by means of Pseudophase plots and pressure-volume loops. IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART A-SYSTEMS AND HUMANS. 2013;43(1):53–62.
MLA
Ionescu, Clara-Mihaela, JA Tenreiro Machado, and Robain De Keyser. “Analysis of the Respiratory Dynamics During Normal Breathing by Means of Pseudophase Plots and Pressure-volume Loops.” IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART A-SYSTEMS AND HUMANS 43.1 (2013): 53–62. Print.
@article{3117071,
  abstract     = {This paper reports on the analysis of tidal breathing patterns measured during noninvasive forced oscillation lung function tests in six individual groups. The three adult groups were healthy, with prediagnosed chronic obstructive pulmonary disease, and with prediagnosed kyphoscoliosis, respectively. The three children groups were healthy, with prediagnosed asthma, and with prediagnosed cystic fibrosis, respectively. The analysis is applied to the pressure-volume curves and the pseudophase-plane loop by means of the box-counting method, which gives a measure of the area within each loop. The objective was to verify if there exists a link between the area of the loops, power-law patterns, and alterations in the respiratory structure with disease. We obtained statistically significant variations between the data sets corresponding to the six groups of patients, showing also the existence of power-law patterns. Our findings support the idea that the respiratory system changes with disease in terms of airway geometry and tissue parameters, leading, in turn, to variations in the fractal dimension of the respiratory tree and its dynamics.},
  author       = {Ionescu, Clara-Mihaela and Tenreiro Machado, JA and De Keyser, Robain},
  issn         = {2168-2216},
  journal      = {IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS PART A-SYSTEMS AND HUMANS},
  keywords     = {CYSTIC-FIBROSIS,FORCED OSCILLATION TECHNIQUE,LUNG-TISSUE,SYSTEM,VISCOELASTICITY,INFLAMMATION,GEOMETRY,CHILDREN,MODEL,Correlation,delay,forced oscillation,fractal dimension,geometrical mapping,homothety factor,lung function test,phase plot,respiratory impedance},
  language     = {eng},
  number       = {1},
  pages        = {53--62},
  title        = {Analysis of the respiratory dynamics during normal breathing by means of Pseudophase plots and pressure-volume loops},
  url          = {http://dx.doi.org/10.1109/TSMCA.2012.2187888},
  volume       = {43},
  year         = {2013},
}

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