Chronic obstructive pulmonary disease in the community of Thua Thien Hue

Aims: To determine the rate of chronic obstructive pulmonary disease in people ≥ 40 years old and some related factors in Thua Thien Hue province in the 2021 - 2022 period. Clinical and paraclinical characteristics and risk stratification in patients with chronic obstructive pulmonary disease. Methods: 1600 people, aged ≥ 40 years old, selected randomly from among the residents area of Thua Thien Hue. Agree to participate in the study after being provided with information. Results: The prevalence of COPD in Thua Thien Hue province is 5,4%. Age, gender, education, history of asthma and chronic bronchitis, using of straw and firewood stoves, and smoking are factors independently associated with COPD. History of allergy was 17,2%, ENT disease was 18,4%, gastroesophageal reflux disease was 16,1%. The most common symptoms were chronic cough (80,5%), expectoration (74,7%), and dyspnea (66,7%). 52,9% of patients had all 3 of the above symptoms. The rate of current smoking was 64,4%. X-ray symptoms in patients were very rare (1,1%). The ratio of FEV1/FVC < 30% was very rare (2,3%). The FEV1/FVC ratio from 50% - 80% accounted for the highest rate (37,9%), followed by the 30% - 50% group (21,8%). The majority of patients were detected at moderate obstruction level, accounting for 37,9%; the rate of patients detected with COPD at mild obstruction stage was 21,8%. The risk stratification of COPD exacerbation by type A was 29,9%, type B was 1,1%, type C was 59,8%, type D was 9,2%. Conclusion: The rate of chronic obstructive pulmonary disease is quite high in the Thua Thien Hue community. A screening strategy is needed to detect chronic obstructive pulmonary disease early in the whole province. Pay attention to subjects who are male, illiterate or only literate, have asthma and chronic bronchitis, using the straw, firewood or coal stoves, smoke or have quit smoking