Currently, mitral valve disease is one of the most common cardiovascular diseases. The disease seriously affects the function and activity of the heart, causing dangerous consequences for the patient's health, and can even cause death after many years if not treated promptly.

Valve replacement or valve repair in patients with mitral valve disease can be accomplished with minimally invasive open-heart surgery. This is an effective, highly aesthetic treatment method, especially for patients with mitral valve disease.

According to statistics in Vietnam, the number of patients with mitral valve stenosis is quite large. This is a phenomenon of the mitral valve being narrowed, limiting the amount of blood flowing through. Although it is a cardiovascular disease, some patients with the disease also have the condition of coughing up blood. So why does heart valve stenosis lead to this phenomenon?