Cognitive impairment in chronic obstructive pulmonary disease

Area of Science:

• Pulmonology
• Neurology
• Cognitive Science

Background:

• Severe Chronic Obstructive Pulmonary Disease (COPD) is frequently linked to cognitive deficits.
• The Montreal Cognitive Assessment (MoCA) test is a tool for assessing cognitive impairment across various domains.
• Understanding the impact of COPD stages on cognition is crucial for patient management.

Purpose of the Study:

• To evaluate the effect of stable COPD and acute exacerbations (AECOPD) on cognitive status.
• To assess cognitive function using the MoCA questionnaire in COPD patients.
• To explore correlations between cognitive scores and inflammatory markers in COPD.

Main Methods:

• Compared MoCA scores among 30 stable COPD patients, 9 AECOPD patients, and 13 healthy controls.
• Ensured comparable education levels and anthropometric measurements between groups.
• Analyzed correlations between MoCA scores, pulmonary function (e.g., FEV), and inflammatory markers (e.g., CRP, ESR).

Main Results:

• AECOPD patients exhibited significantly lower MoCA scores (14.6±3.4) compared to stable COPD (20.2±2.4) and controls (24.2±5.8).
• Cognitive domains most affected were language, abstraction, attention, delayed recall, and orientation.
• MoCA scores correlated with FEV and inversely with CRP, fibrinogen, ESR, and partial pressure of CO2.

Conclusions:

• COPD significantly diminishes cognitive status in both advanced and acute disease stages.
• Cognitive impairment in COPD is associated with disease severity and inflammatory processes.
• MoCA is a valuable tool for detecting cognitive deficits in COPD patients.