Chest
Volume 130, Issue 6, December 2006, Pages 1723-1725
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Original Research: Asthma
Disproportionate Breathlessness Associated With Deep Sighing Breathing in a Patient Presenting With Difficult-To-Treat Asthma

https://doi.org/10.1378/chest.130.6.1723Get rights and content

Disproportionate breathlessness

is a term that is used synonymously with dysfunctional breathing and idiopathic hyperventilation in the absence of chest disease. In the presence of chest disease, it may not be possible to use these three terms interchangeably. We report a case of a patient with documented asthma but breathlessness that was out of proportion to the measured lung function or exercise tolerance. The breathing pattern was abnormal and was characterized by the need to take frequent deep sighs, which increased in frequency during incremental exercise, despite increasing respiratory rate and tidal volume. Treatment with physiotherapist-led breathing retraining resulted in an improvement in the sigh rate and breathlessness scores. Disproportionate breathlessness and deep sighing breathing are part of the spectrum of conditions that comprise dysfunctional breathing and can cause symptoms that may be wrongly attributed to asthma.

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Acknowledgement

The UCSD SOB questionnaire was used with permission of the UCSD Medical Center.

References (5)

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Reproduction of this article is prohibited without written permission from the American College of Chest Physicians (www.chestjournal.org/misc/reprints.shtml).

The authors have reported to the ACCP that no significant conflicts of interest exist with any companies/organizations whose products or services may be discussed in this article.

This work was funded entirely by the North West Lung Research Centre. The Lifeshirt was provided on loan by Vivometrics Inc, Ventura CA.

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