Radiofrequency-assisted balloon dilatation in patients with pulmonary valve atresia and an intact ventricular septum.

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  • Additional Information
    • Source:
      Publisher: BMJ Pub. Group [etc.] Country of Publication: England NLM ID: 0370634 Publication Model: Print Cited Medium: Print ISSN: 0007-0769 (Print) Linking ISSN: 00070769 NLM ISO Abbreviation: Br Heart J Subsets: MEDLINE
    • Publication Information:
      Original Publication: London, BMJ Pub. Group [etc.]
    • Subject Terms:
      Balloon Occlusion*; Catheter Ablation/*methods ; Catheterization/*methods ; Pulmonary Valve/*abnormalities; Catheter Ablation/adverse effects ; Congenital Abnormalities/therapy ; Female ; Heart Septum/pathology ; Humans ; Infant ; Infant, Newborn ; Male ; Prospective Studies ; Pulmonary Artery/diagnostic imaging ; Pulmonary Valve/diagnostic imaging ; Pulmonary Valve/surgery ; Radiography
    • Abstract:
      Objective: To investigate the efficacy and safety of transcatheter radiofrequency-assisted valve dilatation for infants with pulmonary valve atresia and intact ventricular septum as an alternative to the use of laser heated wires.
      Design: Prospective clinical study.
      Setting: Three paediatric cardiology centres.
      Patients: Four children (aged 5-101 days, weight 2.8 kg) with pulmonary valve atresia and intact ventricular septum underwent percutaneous radiofrequency-assisted valve dilatation.
      Methods: After delineating the atretic valve by angiography, 0.020 inch or 0.018 inch radiofrequency wires were used to perforate the atretic valve. The valve was then dilated with conventional balloon dilatation catheters up to the valve annulus diameter.
      Results: In all four cases the radiofrequency wire perforated the atretic pulmonary valve and balloon dilatation was successful. In one patient the radiofrequency wire also passed through the anterior wall of the pulmonary artery causing tamponade which required surgical repair shortly afterwards. This patient died from sepsis six days later. One patient died three weeks after the procedure from septicaemia and a paradoxical coronary embolus. Two patients were discharged after 4 and 14 days respectively.
      Conclusions: Radiofrequency-assisted valve dilatation is a promising alternative to the recently developed laser wire technique. The major advantages are a reduction in cost and improved safety for the staff performing the procedure.
    • References:
      Am J Cardiol. 1991 Feb 15;67(5):428-31. (PMID: 1994669)
    • Publication Date:
      Date Created: 19930401 Date Completed: 19930615 Latest Revision: 20190503
    • Publication Date:
      20240829
    • Accession Number:
      PMC1025051
    • Accession Number:
      10.1136/hrt.69.4.347
    • Accession Number:
      8489868