Prevention and treatement of complications on percutaneous balloon valvuloplasty;

Effects of percutaneous balloon mitral valvuloplasty on pwave dispersion;

Effects and experiences of percutaneous balloon mitral valvuloplasty in 846 patients with rheumatic mitral stenosis;

Evaluation on clinical efficacy in 143 patients with rheumatic mitral stenosis after percutaneous balloon mitral valvuloplasty;

Application of Transesophageal Echocardiography in the Percutareous Transvenous Balloon Valvuloplasty;

Objective Quantitatively assess the immediate and long-term effect of mitral balloon valvoplasty on severe pulmonary hypertension and cardiac output.

Effects and operation method improvement of percutaneous balloon pulmonary valvuloplasty for the treatment of patients with serious congenital pulmonary valve stenosis;