Abstract

Objectives: To survey on the degree of airway obstruction and risk stratification of chronic obstructive pulmonary disease in people ≥ 40 years old in Thua Thien Hue province.

Methods: A cross - sectional descriptive study on 1600 people aged 40 years and over, randomly selected from the population to be included in the study when people agreed to participate. Non - proportional stratified sampling,representative of the regions of Thua Thien Hue province. The study participants were interviewed according to a set of questionnaires, clinical examination and measurement of ventilation function to detect subjects patients with chronic obstructive pulmonary disease and obtain personal information related to the disease. Data processing using SPSS 20.0 software.

Results: The degree of obstruction in stage 2 (50% ≤ FEV1 < 80%) accounted for the highest rate of 45,5%. The lowest was stage 4 (FEV1 < 30%) with a rate of 4,0%. The majority of patients were found to have moderate obstruction GOLD 2, accounting for 36,6%; the rate of detected COPD in the stage of mild obstruction GOLD 1 accounted for 21,8%. The rate of CAT scale ≥ 10 points accounted for 68,3%, mMRC ≥ 2 points was 74,3%. The risk stratification of COPD exacerbations according to group A was 33,7%, group B was 2,0%, group C was 55,4%, group D was 8,9%.

Conclusion: In our study, the majority of COPD patients had moderate airway obstruction. Health status can be a precursor to exacerbations, and CAT scores can be useful tools for predicting COPD exacerbations. Keywords: Chronic obstructive pulmonary disease, degree of airway obstruction, risk stratification.