经皮球囊肺动脉瓣成形术(percutaneous balloon pulmonary valvuloplasty,PBPV)临床有效率为()A: 95%B: 85%C: 75%D: 65%E: 50%

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经皮球囊肺动脉瓣成形术(percutaneous balloon pulmonary valvuloplasty,PBPV)临床有效率为()

  • A: 95%
  • B: 85%
  • C: 75%
  • D: 65%
  • E: 50%

请帮忙给出正确答案和分析,谢谢!