Lung sound analysis in a patient with vocal cord dysfunction and bronchial asthma

The Journal of Asthma : Official Journal of the Association for the Care of Asthma
Yuko AmimotoHiroshi Odajima

Abstract

Vocal cord dysfunction (VCD) is a condition characterized by adduction of the vocal cords, resulting in narrowing or even closure of the glottis during inspiration. This can cause wheezing that originates at the site of narrowing. Some patients have both VCD and asthma. In such cases, an acute episode of VCD can be difficult to differentiate from that of asthma. We tested the usefulness of lung sound analysis (LSA) in such a condition. We performed an LSA in a patient with asthma and coexisting VCD diagnosed using laryngoscopy. The LSA during an acute VCD episode revealed monophonic continuous adventitious sounds that were distributed symmetrically over both lung fields. The time domain analysis revealed that the adventitious sounds originated in the neck. These LSA findings clearly indicated that the acute episode was not due to asthma but due to VCD. This case illustrates that the LSA may be a useful tool to differentiate between an acute episode of asthma and that of VCD.

References

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Citations

Nov 5, 2014·The Journal of Asthma : Official Journal of the Association for the Care of Asthma·Majdy Idrees, J Mark FitzGerald
Dec 3, 2014·La Presse médicale·Jérémie TaverneBenoit Wallaert
Oct 5, 2016·Journal of Voice : Official Journal of the Voice Foundation·Jinny YeAmanda I Gillespie
Aug 31, 2017·European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery·Ahmed GeneidP Piirilä

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