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Expiratory flow limitation in patients with pleural effusion
D Spyratos1, L Sichletidis, K Manika
1Pulmonary Clinic, G. Papanicolaou Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece.
Respiration; International Review of Thoracic Diseases
|March 31, 2007
Summary
Therapeutic thoracentesis significantly improves expiratory flow limitation (EFL) in most patients with pleural effusion. This suggests EFL may contribute to dyspnea in these individuals.
Area of Science:
- Pulmonary Medicine
- Respiratory Physiology
Background:
- Expiratory flow limitation (EFL) is a key cause of dyspnea in COPD.
- EFL has not been previously studied in patients with pleural effusion.
Purpose of the Study:
- To determine if patients with pleural effusion exhibit EFL.
- To assess the impact of therapeutic thoracentesis on EFL.
Main Methods:
- 21 patients with pleural effusion underwent thoracentesis.
- Spirometry and negative expiratory pressure technique measured EFL before and after thoracentesis.
- Pleural pressure (PP) was monitored.
Main Results:
- 14 of 21 patients showed EFL before thoracentesis; 7 showed EFL after.
- Significant improvement in EFL was observed post-thoracentesis.
- No correlation found between EFL improvement and lung function changes or fluid parameters.
Conclusions:
- Thoracentesis leads to improvement in EFL for most patients with pleural effusion.
- EFL is a potential contributor to dyspnea in pleural effusion.
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