title: Transcatheter double-blade valvotomy for the treatment of valvar pulmonary stenosis.
abstract: A transcatheter double-blade valvotome for cutting a stenotic pulmonary valve has been devised. The valvotome consists of a retractable rhomboid structure at its tip, with a blade on each side of its proximal half. By tugging the extended blades from the pulmonary artery to the right ventricle it is possible to tear the stenotic valve. After animal experiments proved the feasibility and safety of this method, it was used in three children with pulmonary stenosis. The results were encouraging.
authors.affiliation: Department of Cardiology, Shanghai Children's Hospital, China.
authors.forename: S Y
authors.initials: SY
authors.lastname: Yang
authors.forename: C C
authors.initials: CC
authors.lastname: Qian
authors.forename: Y F
authors.initials: YF
authors.lastname: Hsia
authors.forename: Y T
authors.initials: YT
authors.lastname: Hwa
authors.forename: T C
authors.initials: TC
authors.lastname: Qian
authors.forename: D D
authors.initials: DD
authors.lastname: Xu
authors.forename: S C
authors.initials: SC
authors.lastname: Chao
authors.forename: T F
authors.initials: TF
authors.lastname: Wu
mesh_terms: D000293:Adolescent; D000818:Animals; D002404:Catheterization / Q000295:instrumentation* / Q000379:methods / Q000592:standards; D002648:Child; D002675:Child, Preschool; D002932:Cineangiography; D004285:Dogs; D005069:Evaluation Studies as Topic; D006439:Hemodynamics; D006801:Humans; D011666:Pulmonary Valve Stenosis / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000628:therapy*