title: Feasibility and efficacy of stent redilatation in aortic coarctation.
abstract: OBJECTIVE
  We evaluated the efficacy and safety of stent redilation in patients with aortic coarctation (COA).
  
  
  RESULTS
  In our retrospective study of 28 stent redilation procedures on 22 patients, the interval between implantation and redilation ranged from 2.5 month to 11 years (median 18 months). Ten patients had native COAs, one had repaired interrupted aortic arch. The remaining patients had residual COAs after surgery. Stent redilation was successful in 26 procedures. Pressure gradients decreased from a mean of 26 +/- 13.8 mm Hg to 7.9 +/- 6.52 mm Hg (P < 0.001). The mean diameter of the stents increased from 9.19 +/- 3.29 mm to 12.1 +/- 3.68 mm (P < 0.001). In a patient with Williams-Beuren syndrome, massive neointimal proliferation made stent redilation impossible. One other patient developed aortic aneurysm after redilation and was operated after 3 years.
  
  
  CONCLUSIONS
  Stent redilation for aortic COA is a safe and successful procedure.
authors.affiliation: Department of Congenital Heart Disease, German Heart Institute, Berlin, Berlin, Germany.
authors.forename: Keyhan S
authors.initials: KS
authors.lastname: Zanjani
authors.forename: Titus
authors.initials: T
authors.lastname: Sabi
authors.forename: Axel
authors.initials: A
authors.lastname: Moysich
authors.forename: Stanislav
authors.initials: S
authors.lastname: Ovroutski
authors.forename: Bjoern
authors.initials: B
authors.lastname: Peters
authors.forename: Oliver
authors.initials: O
authors.lastname: Miera
authors.forename: Titus
authors.initials: T
authors.lastname: Kühne
authors.forename: Nicole
authors.initials: N
authors.lastname: Nagdyman
authors.forename: Felix
authors.initials: F
authors.lastname: Berger
authors.forename: Peter
authors.initials: P
authors.lastname: Ewert
mesh_terms: D000293:Adolescent; D001014:Aortic Aneurysm / Q000209:etiology; D001017:Aortic Coarctation / Q000000981:diagnostic imaging / Q000628:therapy*; D001027:Aortography; D002404:Catheterization / Q000009:adverse effects / Q000295:instrumentation*; D002648:Child; D002675:Child, Preschool; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011474:Prosthesis Design; D012189:Retrospective Studies; D015607:Stents; D013997:Time Factors; D016896:Treatment Outcome; D055815:Young Adult