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Cognitive and functional deterioration in patients with severe COPD.
Cengiz Ozge1, Aynur Ozge, Ozgür Unal
1Department of Chest Disease, Mersin University School of Medicine, Mersin, Turkey. cengizozge@mersin.edu.tr
Behavioural Neurology
|July 29, 2006
Summary
Patients with Chronic Obstructive Pulmonary Disease (COPD) often experience cognitive and functional impairments. These neurological abnormalities are linked to COPD duration and hypoxemia, impacting daily life.
Area of Science:
- Neurology
- Pulmonology
- Geriatrics
Background:
- Chronic Obstructive Pulmonary Disease (COPD) is a progressive lung disease.
- Neurological complications, including cognitive decline, are increasingly recognized in COPD patients.
- The relationship between COPD severity, hypoxemia, and cognitive function requires further elucidation.
Purpose of the Study:
- To investigate the association between COPD duration, hypoxemia, and neurological abnormalities.
- To assess cognitive functioning and functional status in severe COPD patients.
- To determine the prevalence of cognitive impairment and dementia in COPD.
Main Methods:
- Fifty-four severe COPD patients and 24 controls underwent pulmonary function tests.
- Cognitive function was evaluated using the Mini-mental State Examination (MMSE) and other scales (BDS, GDS, CDR).
- Functional status was assessed using PSMS, MADL, and IADL scales; depression was measured by CSDD.
Main Results:
- 64% of COPD patients exhibited MMSE abnormalities, particularly in memory, attention, and language.
- Cognitive and functional impairments were significantly correlated.
- 77.7% of COPD patients showed cognitive disturbance, with 72.2% classified as having questionable or mild dementia.
Conclusions:
- Severe COPD patients demonstrate significant cognitive and functional impairments.
- These impairments are associated with COPD duration and hypoxemia.
- Cognitive decline in COPD is not solely attributable to depression.