Dyspnea and Adverse Events During Sputum Induction in COPD Patients
Author Information
Author(s): Makris Demosthenes, Tzanakis Nikolaos, Moschandreas Joanna, Siafakas Nikolaos M
Primary Institution: Department of Thoracic Medicine, University of Crete, Medical School, Heraklion, Greece
Hypothesis
The inhalation of saline during sputum induction may lead to dyspnea and lung function deterioration in COPD patients.
Conclusion
COPD patients undergoing sputum induction following a safety protocol do not experience major adverse events, but those with advanced disease are more likely to experience dyspnea and oxygen desaturation.
Supporting Evidence
- 40 subjects experienced changes in Borg scores during sputum induction.
- 16 patients had to stop the procedure due to dyspnea.
- Patients with advanced COPD had greater changes in Borg scores and oxygen saturation.
Takeaway
When COPD patients breathe in saline to help collect mucus, they might feel short of breath, especially if their disease is severe, but serious problems are rare.
Methodology
Sputum was induced using normal and hypertonic saline in COPD patients, with dyspnea assessed using the Borg scale and lung function measured by spirometry.
Potential Biases
Potential bias in self-reported symptoms and the subjective nature of dyspnea assessment.
Limitations
The study may not generalize to all COPD patients, especially those with acute exacerbations or other comorbidities.
Participant Demographics
65 patients with stable COPD, including 21 current smokers and 44 ex-smokers.
Statistical Information
P-Value
0.001
Confidence Interval
95% CI 1.4–6
Statistical Significance
p<0.05
Digital Object Identifier (DOI)
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