title: Effect of saphenous vein diameter on closure rate with ClosureFAST radiofrequency catheter.
abstract: OBJECTIVE
  Radiofrequency ablation (RFA) of veins >12 mm in diameter has been a controversial subject since the first-generation device was submitted for Food and Drug Administration (FDA) approval. Veins >12 mm were excluded in the initial study. Many insurance carriers used >12 mm size as reason to not approve the procedure. As the concept of tumescent anesthesia was better communicated, RFA was used for large veins. The 12-mm size limit was not used in the studies for the newer ClosureFAST catheter approval, yet remains in force with some insurance companies. Our objective was to determine whether vein diameter >12 mm had effect on closure rates with the Closure-FAST catheter.
  
  
  METHODS
  ClosureFAST RFA was used to eliminate saphenous reflux in consecutive cases in 1 center. Retrospective analysis was performed on prospectively gathered data. Veins were divided into < or =12 mm diameter (group A) or >12 mm diameter (group B). Duplex scans were scheduled for 2 to 5 days and 6 months postprocedure.
  
  
  RESULTS
  A total of 338 great and small saphenous veins were treated, 246 saphenous veins in group A (mean 8 +/- 2 mm) and 96 in group B (mean 17 +/- 4 mm). Early duplex showed complete closure in 231 veins in group A (94%) and 92 veins in group B (96%; NS). The remaining veins showed partial closure with none showing retrograde flow. Six-month duplex scans were completed in 155 veins. Complete closure was seen in 110 veins in group A (98%) and 43 veins in group B (100%; NS). All veins partially open on early scan had closed by 6 months. The 2 veins open at 6 months in group A were closed on initial scan.
  
  
  CONCLUSIONS
  Vein diameter >12 mm had no effect on closure rate with the ClosureFAST catheter.
authors.affiliation: Calcagno and Rossi Vein Treatment Center, Mechanicsburg, Pennsylvania 17050, USA. vasculardoctor@comcast.net
authors.forename: David
authors.initials: D
authors.lastname: Calcagno
authors.forename: John A
authors.initials: JA
authors.lastname: Rossi
authors.forename: Chi
authors.initials: C
authors.lastname: Ha
mesh_terms: D000328:Adult; D000368:Aged; D017115:Catheter Ablation / Q000009:adverse effects / Q000295:instrumentation; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D012501:Saphenous Vein / Q000000981:diagnostic imaging / Q000601:surgery*; D013997:Time Factors; D016896:Treatment Outcome; D018616:Ultrasonography, Doppler, Duplex; D014648:Varicose Veins / Q000000981:diagnostic imaging / Q000601:surgery*