Cognitive dysfunction in patients with chronic obstructive pulmonary disease--a systematic review

Area of Science:

• Pulmonary Medicine
• Neuropsychology
• Healthcare Management

Background:

• Chronic obstructive pulmonary disease (COPD) consumes significant healthcare resources.
• Patient self-care is encouraged but must consider cognitive abilities.
• Cognitive dysfunction in COPD patients requires further investigation.

Purpose of the Study:

• To determine the prevalence and severity of cognitive dysfunction in COPD patients.
• To assess the relationship between COPD severity and cognitive function levels.

Main Methods:

• Systematic review of studies up to July 2010.
• Searched multiple databases including Medline, PsychINFO, and EMBASE.
• Included studies with COPD patients, cognitive function assessment, and COPD severity measures.

Main Results:

• Fifteen studies (655 COPD patients, 394 controls) were analyzed.
• COPD patients exhibited cognitive impairment compared to controls, but less than Alzheimer's patients.
• Severe COPD patients showed a significant association between disease severity and cognitive dysfunction.

Conclusions:

• Cognitive impairment is identifiable in severe COPD.
• The clinical significance of this cognitive dysfunction remains unclear.
• Future research should explore the impact on daily living and the need for support in self-care strategies.