title: One center experience in pulmonary artery stenting without long vascular sheath.
abstract: BACKGROUND
  Pulmonary artery stenting without a long vascular sheath has a special significance, particularly for children with low body weight. Using only a short sheath often permits the implantion of a stent of the correct size; moreover, it improves access to peripherally located stenoses. The aim of this paper is to present the results of a balloon expandable stent implantation into pulmonary arteries without using a long vascular sheath.
  
  
  METHODS
  The subjects were divided into two groups. The first group (28 patients, mean age 3.2 years) comprised patients with a single-ventricle heart after bi-directional Glenn procedure (Fontan procedure). The second group (22 patients, mean age 8.3 years) consisted of patients with a two-ventricle heart. Patients were retrospectively analyzed with regard to stenosis size widening and change in trans-stenotic pressure gradient after stenting.
  
  
  RESULTS
  In our data, no statistically significant differences between the two groups in terms of the number of complications and incorrect stent position following implantation were noted (3% and 4%). Good treatment results, with a decrease in trans-stenotic pressure gradient in the first group of 3.2 mm and in the second group of 13.4 mm of mercury, and a widening of the stenosis, were obtained in most cases in both groups (97% and 96%). The average change of the vessel's diameter was in the first group 4.2 mm and in the second 5.4 mm.
  
  
  CONCLUSIONS
  The obtained results suggest that pulmonary artery stenting with a short vascular sheath has numerous advantages and can be successfully performed in children. In the case of single-ventricle hearts after a Glenn procedure, it may indeed be the method of choice.
authors.affiliation: Department of Cardiology, Polish Mother's Memorial Hospital, Research Institute, Łódź, Poland.
authors.forename: Tomasz
authors.initials: T
authors.lastname: Moszura
authors.forename: Krzysztof W
authors.initials: KW
authors.lastname: Michalak
authors.forename: Paweł
authors.initials: P
authors.lastname: Dryzek
authors.forename: Jadwiga A
authors.initials: JA
authors.lastname: Moll
authors.forename: Jacek
authors.initials: J
authors.lastname: Moll
authors.forename: Andrzej
authors.initials: A
authors.lastname: Sysa
mesh_terms: D000293:Adolescent; D000800:Angioplasty, Balloon / Q000009:adverse effects / Q000295:instrumentation*; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000628:therapy*; D001794:Blood Pressure; D002648:Child; D002675:Child, Preschool; D003251:Constriction, Pathologic; D004867:Equipment Design; D006801:Humans; D007223:Infant; D011044:Poland; D011474:Prosthesis Design; D011651:Pulmonary Artery / Q000000981:diagnostic imaging / Q000503:physiopathology; D011859:Radiography; D012189:Retrospective Studies; D015607:Stents; D016896:Treatment Outcome; D055815:Young Adult