Prevalence of asthma—chronic obstructive pulmonary disease overlap in patients with airflow limitation

Abstract Background Asthma-COPD overlap (ACO) according to GINA and GOLD is not a single disease described by persistent airflow limitation with several features usually associated asthma COPD. Some different protocols were proposed diagnose ACO, besides those reported in guidelines. Despite the discrepancy between all diagnostic protocols, diagnosis of ACO still worthy as it may lead more appropriate treatment plan. In Egypt, prevalence hardly estimated due lack database patients. Our aim work was detect patients diagnosed having chronic limiting disease. Results group (75 patients), 53.3% (40 patients) 3 statistically significant favoring criteria; post-BDR test FEV1/FVC < 70%, longer duration, sputum neutrophilia ≥ 57%. While COPD 42.7% (32 four higher BDR, presence personal history either or atopy eosinophils > 1%. Conclusions has an underestimated among More consensus guidelines are needed focus on effective practical criteria such hidden