Bronchiectasis is secondary right ventricular dilatation and hypertrophy. The cause of the disease is due to increased pulmonary artery pressure causing diseases that damage the function or structure of the lungs.

Asthma is a common chronic respiratory disease in the population with symptoms of cough, wheezing, shortness of breath and phlegm. If asthma is not controlled effectively, in the long term, asthma will cause many different complications, impair health, and affect the patient's quality of life.

Cor pulmonale is a lung disease that leads to secondary right heart failure. The incidence of the disease increases in countries with many smokers and polluted environments because this is a risk factor for chronic lung disease. If chronic cor pulmonale is properly monitored and treated, the prognosis is good and the disease progresses more slowly.

According to statistics, chronic cor pulmonale is the most common cardiovascular disease after ischemic heart disease and hypertension. Chronic cor pulmonale is very dangerous, so diagnosis is necessary to have appropriate treatment methods. Some methods to diagnose chronic cor pulmonale are X-ray, echocardiography, ... or based on clinical symptoms.