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Expiratory flow limitation and obstruction in the elderly
C de Bisschop1, M L Marty, J F Tessier
1Laboratoire des Adaptations Physiologiques aux Activités Physiques, Faculté des Sciences du Sport, 4 allée Jean Monnet 86000 Poitiers, France. Claire.de-Bisschop@mshs.univ-poitiers.fr
The European Respiratory Journal
|October 6, 2005
Summary
Elderly individuals often experience dyspnoea due to expiratory flow limitation (EFL). Measuring EFL alongside standard spirometry aids in understanding breathlessness in older adults.
Area of Science:
- Gerontology
- Respiratory Medicine
- Pulmonary Physiology
Background:
- Dyspnoea is a common complaint among the elderly.
- Expiratory flow limitation (EFL) is a potential underlying cause of dyspnoea in this population.
- The relationship between EFL and traditional spirometric indices in the elderly requires further investigation.
Purpose of the Study:
- To investigate the relationship between expiratory flow limitation (EFL) and spirometric indices in an elderly French population.
- To assess the prevalence of EFL in elderly individuals with and without respiratory symptoms.
- To determine the clinical utility of EFL measurements in interpreting dyspnoea in older adults.
Main Methods:
- A study was conducted on 750 elderly individuals (aged 66-88) from a French population.
- Expiratory flow limitation (EFL) was assessed using the negative expiratory pressure method.
- Standard spirometric indices, including forced expiratory volume in one second (FEV1) and forced vital capacity (FVC), were measured.
- Participants completed questionnaires on medical history, smoking status, and respiratory symptoms.
Main Results:
- 47% of the elderly participants exhibited expiratory flow limitation (EFL+).
- EFL prevalence was higher in females and increased with the severity of dyspnoea.
- EFL correlated with age but did not correlate with the FEV1/FVC ratio, a common index for obstruction.
- Elderly individuals with dyspnoea but no medical history, particularly females with low FVC, showed greater EFL than healthy controls.
Conclusions:
- Expiratory flow limitation (EFL) is prevalent in the elderly population, particularly in those with dyspnoea.
- EFL measurements provide valuable information for interpreting dyspnoea in the elderly, complementing standard spirometric indices like FEV1/FVC.
- Further research may elucidate the specific mechanisms and clinical implications of EFL in geriatric respiratory health.