Key result
Regardless of clinical condition (recent acute exacerbation vs. stable), cardiac function and structure were similar between COPD patients, and exercise capacity was significantly associated with cardiac features.
Why the study?
Patients with COPD are prone to cardiac remodeling, but little is known regarding cardiac function in patients recovering from an acute exacerbation and its relationship with exercise capacity.
Are there differences in cardiac function, structure, and their relationship with exercise capacity between patients with recent acute exacerbation of COPD and those with stable COPD?
Cross-Sectional (n=40)
No
Are there differences in cardiac function, structure, and their relationship with exercise capacity between patients with recent acute exacerbation of COPD and those with stable COPD?
Cardiac function and structure are similar between patients with recent COPD exacerbation and stable COPD, and both correlate with exercise capacity.
Similar cardiac function post-exacerbation warrants no practice change; leaves open echocardiography's role in COPD exercise assessment.
OBJECTIVE: Patients with COPD are prone to cardiac remodeling; however, little is known about cardiac function in patients recovering from an acute exacerbation of COPD (AECOPD) and its association with exercise capacity. The aim of this study was to evaluate the cardiac function and structure and to compare their relationship with exercise capacity in patients with a recent AECOPD and patients with clinically stable COPD. METHODS: This was a cross-sectional study including 40 COPD patients equally divided into two groups: recent AECOPD group (AEG) and clinically stable COPD group (STG). Echocardiography was performed to assess cardiac function and chamber structure. The six-minute walk distance (6MWD) and the Duke Activity Status Index (estimated Vo2) were used in order to assess exercise capacity. RESULTS: No significant differences in cardiac function and structure were found between the groups. The 6MWD was associated with early/late diastolic mitral filling velocity ratio (r = 0.50; p < 0.01), left ventricular posterior wall thickness (r = -0.33; p = 0.03), and right atrium volume index (r = -0.34; p = 0.04), whereas Vo2 was associated with right atrium volume index (r = -0.40; p = 0.02). CONCLUSIONS: Regardless of the clinical condition (recent AECOPD vs. stable COPD), the cardiac function and structure were similar between the groups, and exercise capacity (determined by the 6MWD and Vo2) was associated with cardiac features.
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Pereira et al. (2022) conducted a cross-sectional in Chronic Obstructive Pulmonary Disease (COPD) (n=40). Recent acute exacerbation of COPD vs. Clinically stable COPD was evaluated on Differences in cardiac function and structure (echocardiography). Regardless of clinical condition (recent acute exacerbation vs. stable), cardiac function and structure were similar between COPD patients, and exercise capacity was significantly associated with cardiac features.
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