Analysis of Normal and Continuous Adventitious Sounds for the Assessment of Asthma

  • M. Lozano
  • J. A. Fiz
  • R. Jané
Part of the IFMBE Proceedings book series (IFMBE, volume 41)

Abstract

Assessment of asthma is a difficult procedure which is based on the correlation of multiple factors. A major component in the diagnosis of asthma is the assessment of BD response, which is performed by traditional spirometry. In this context, the analysis of respiratory sounds (RS) provides relevant and complementary information about the function of the respiratory system. In particular, continuous adventitious sounds (CAS), such as wheezes, contribute to assess the severity of patients with obstructive diseases. On the other hand, the intensity of normal RS is dependent on airflow level and, therefore, it changes depending on the level of obstruction. This study proposes a new approach to RS analysis for the assessment of asthmatic patients, by combining the quantification of CAS and the analysis of the changes in the normal sound intensity-airflow relationship. According to results obtained from three patients with different characteristics, the proposed technique seems more sensitive and promising for the assessment of asthma.

Keywords

asthma bronchodilator response continuous adventitious sound respiratory sound intensity wheezes 

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Copyright information

© Springer International Publishing Switzerland 2014

Authors and Affiliations

  • M. Lozano
    • 1
    • 4
  • J. A. Fiz
    • 2
    • 4
    • 5
  • R. Jané
    • 3
    • 4
    • 5
  1. 1.Innovation Group at Health Sciences Research Institute of the Germans Trias i Pujol Foundation (IGTP)BadalonaSpain
  2. 2.Pneumology Service at the Germans Trias i Pujol University HospitalBadalonaSpain
  3. 3.Department of Automatic Control (ESAII)Universitat Politècnica de Catalunya (UPC)BarcelonaSpain
  4. 4.Institute for Bioengineering of Catalonia (IBEC)BarcelonaSpain
  5. 5.Biomedical Research Networking Center in Bioengineering, Biomaterials, and Nanomedicine (CIBER-BBN)BarcelonaSpain

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