title: Comparison of immediate and long-term results between the single balloon and inoue balloon techniques for percutaneous pulmonary valvuloplasty.
abstract: BACKGROUND
  This study was undertaken to compare the immediate and long-term follow-up results of balloon pulmonary valvuloplasty (BPV) between the single balloon and Inoue balloon for isolated pulmonary valve stenosis (PS).
  
  
  METHODS
  A retrospective analysis of outcomes following BPV in 38 children using the single balloon and 42 adults using the Inoue balloon at a single institution was performed.
  
  
  RESULTS
  The majority of children (76.3%) were asymptomatic while 26 adults (61.9%) presented with symptoms. The ratio of balloon size to pulmonary valve annulus was 1.23 ± 0.12 in the children group and 1.22 ± 0.10 in the adult group (P=0.641). The children group had a right ventricle-pulmonary artery systolic gradient of 52.79 ± 35.08 mmHg that decreased to 22.55 ± 12.92 mmHg following BPV (P<0.001). The adult group had a gradient of 94.79 ± 42.19 mmHg that decreased to 34.02 ± 15.00 mmHg following BPV (P<0.001). Mild pulmonary regurgitation occurred in eight children (21.1%) and 10 adults (23.8%) (P=0.768). During a median follow-up of 15 years, gradients were not significantly different from that obtained at one-month follow-up in children (P=0.280) and adults (P=0.373).
  
  
  CONCLUSIONS
  Adults can be treated with BPV using the Inoue balloon with encouraging immediate and long-term follow-up results that are similar to those in children using the single balloon.
authors.affiliation: Department of Cardiology, Changhai Hospital, Second Military Medical University, Shanghai, China.
authors.forename: Suxuan
authors.initials: S
authors.lastname: Liu
authors.affiliation: Department of Cardiology, Changhai Hospital, Second Military Medical University, Shanghai, China.
authors.forename: Xudong
authors.initials: X
authors.lastname: Xu
authors.affiliation: Department of Radiology, Changhai Hospital, Second Military Medical University, Shanghai, China.
authors.forename: Guanzhong
authors.initials: G
authors.lastname: Liu
authors.affiliation: Department of Cardiology, Changhai Hospital, Second Military Medical University, Shanghai, China; Department of Cardiology, 117 Hospital of the Chinese People's Liberation Army, Hangzhou, Zhejiang Province, China.
authors.forename: Xueyan
authors.initials: X
authors.lastname: Ding
authors.affiliation: Department of Cardiology, Changhai Hospital, Second Military Medical University, Shanghai, China. Electronic address: chcardiovasology@foxmail.com.
authors.forename: Xianxian
authors.initials: X
authors.lastname: Zhao
authors.affiliation: Department of Cardiology, Changhai Hospital, Second Military Medical University, Shanghai, China. Electronic address: qin.yongwen@foxmail.com.
authors.forename: Yongwen
authors.initials: Y
authors.lastname: Qin
mesh_terms: D000293:Adolescent; D000328:Adult; D000367:Age Factors; D000368:Aged; D063126:Balloon Valvuloplasty; D001794:Blood Pressure; D002648:Child; D002675:Child, Preschool; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D008297:Male; D008875:Middle Aged; D011651:Pulmonary Artery / Q000503:physiopathology*; D011666:Pulmonary Valve Stenosis / Q000503:physiopathology* / Q000628:therapy*
keywords: Balloon valvuloplasty; Catheterisation; Congenital heart disease; Follow-up studies; Pulmonary valve stenosis