to assess the safety and efficacy of percutaneous balloon valvuloplasty in calcific aortic stenosis , balloon dilatation of critically stenosed , calcified aortic valves was performed in five postmortem hearts , in five patients intraoperatively before aortic valve replacement , and in two elderly patients percutaneously at the time of diagnostic catheterization .
C0003501
aortic valves
C0003506
aortic valve replacement