If the patient has mitral stenosis which is mild and progressing to moderate, it will take a year or even longer.

Because if mild cases are aggressively managed with medication, it can slow the further progression of the disease. Mitral stenosis is a type of rheumatic heart disease or heart valve disease, mainly causing symptoms such as palpitations, chest tightness, and shortness of breath, with severe cases also presenting with swelling of the lower limbs.

For mild mitral stenosis, it is necessary to have regular hospital check-ups, particularly to actively prevent upper respiratory tract infections, as sometimes these conditions can occur after catching cold, and actively controlling respiratory inflammation can improve symptoms.