如抗凝剂使用适当,机械干预时间恰当,则预后很好。[29]Palacios IF, Sanchez PL, Harrell LC, et al. Which patients benefit from percutaneous mitral balloon valvuloplasty? Prevalvuloplasty and postvalvuloplasty variables that predict long-term outcome. Circulation. 2002;105:1465-1471.http://circ.ahajournals.org/content/105/12/1465.fullhttp://www.ncbi.nlm.nih.gov/pubmed/11914256?tool=bestpractice.com 在一项研究中,12 年生存率为 82%。[30]Cannan CR, Nishimura RA, Reeder GS, et al. Echocardiographic assessment of commissural calcium: a simple predictor of outcome after percutaneous mitral balloon valvotomy. J Am Coll Cardiol. 1997;29:175-180.http://www.ncbi.nlm.nih.gov/pubmed/8996311?tool=bestpractice.com 但是,接受药物治疗、晚期症状和/或肺高压的患者,平均生存时间约为 3 年。[31]Roy SB, Gopinath N. Mitral stenosis. Circulation. 1968;38(suppl):68-76.http://www.ncbi.nlm.nih.gov/pubmed/4889600?tool=bestpractice.com