Redefining the overlap of asthma and COPD

Area of Science:

• Pulmonology
• Respiratory Medicine

Background:

• Asthma-COPD overlap (ACO) identifies patients with chronic airflow obstruction exhibiting characteristics of both asthma and chronic obstructive pulmonary disease (COPD).
• Patients with ACO often experience poorer health outcomes compared to those with asthma or COPD alone.
• Current UK guidelines lack specific recommendations for managing ACO, highlighting a clinical management gap.

Purpose of the Study:

• To explore the challenges associated with managing patients who have asthma-COPD overlap.
• To discuss the diagnostic and treatment considerations for this heterogeneous patient group.

Main Methods:

• Review of current literature and guidelines regarding asthma, COPD, and ACO.
• Analysis of consensus-based reports from organizations like GINA and GOLD.
• Discussion of clinical management strategies for patients with overlapping asthma and COPD features.

Main Results:

• The term ACO is preferred over ACOS (asthma-COPD overlap syndrome) to avoid implying a single disease entity.
• ACO represents a heterogeneous group of patients with complex respiratory conditions.
• There is a need for clearer diagnostic criteria and tailored management plans for ACO.

Conclusions:

• Managing asthma-COPD overlap presents significant challenges due to its heterogeneous nature.
• Further research and guideline development are necessary to optimize care for ACO patients.
• Collaboration between asthma and COPD management strategies is crucial for this patient population.