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Speech breathing in patients with lung disease
L Lee1, R G Loudon, B H Jacobson
1Department of Communication Sciences and Disorders, University of Cincinnati, Ohio 45221.
The American Review of Respiratory Disease
|May 1, 1993
Summary
Speech breathing patterns differ significantly in patients with lung diseases like asthma, emphysema, and sarcoidosis. These distinct breathing patterns can help identify specific lung conditions.
Area of Science:
- Pulmonary Medicine
- Speech Science
Background:
- Speech breathing differs from quiet respiration.
- These differences may be altered by lung diseases.
Purpose of the Study:
- To investigate if speech breathing patterns vary across different lung diseases (asthma, emphysema, sarcoidosis) and healthy individuals.
- To determine if these patterns are specific to the disease and task.
Main Methods:
- 41 patients with lung diseases and 16 healthy subjects performed speech tasks (conversation, counting).
- Respiratory volumes, times, and flow rates were measured, yielding 16 variables.
- Statistical analyses included discriminant function and regression analyses.
Main Results:
- Speech breathing alterations were disease and task specific, with >50% accurate classification of subjects by disease.
- Patients exhibited faster respiratory rates and longer inspiratory times (Ti/Ttot) during conversation compared to controls.
- During counting, patients prioritized communication, often appearing more breathless.
Conclusions:
- Speech breathing patterns are significantly altered in patients with asthma, emphysema, and sarcoidosis.
- These altered patterns are disease-specific and can be used for classification.
- The severity of lung disease influences speech production distinctly from the diagnostic category.