title: Early recovery of left ventricular function after stentless versus stented aortic valve replacement for pure aortic stenosis and severe cardiac dysfunction.
abstract: OBJECTIVE
  The aim of this study was to evaluate early recovery of systolic function after stentless aortic valve replacement (AVR) versus stented AVR.
  
  
  METHODS
  Fifty-four consecutive patients with pure aortic stenosis and impaired left ventricular function (LVEF < or = 35%) were studied retrospectively. Aortic regurgitation, concomitant valvular or coronary artery surgery, atrial fibrillation, and a previous AVR were exclusion criteria. Twenty-two patients (mean age, 70.0 +/- 6.5 years) received a stentless bioprosthesis and 32 (mean age, 58.9 +/- 6.2 years, P =.031 between groups) a mechanical or stented biologic valve. Patients underwent echocardiography preoperatively, at discharge, at 6 months, and at 1 year after surgery.
  
  
  RESULTS
  At 6 months, analysis of variance demonstrated significant differences between groups in fractional shortening measured at the endocardium and midwall fractional shortening (<0.001), velocity of circumferential shortening (P <.001) ejection fraction (P =.02), left ventricular mass index (P <.001), systolic meridional wall stress, and circumferential wall stress (P <.001), One-year studies confirmed these findings.
  
  
  CONCLUSIONS
  LV function showed, after a stentless AVR, an early recovery greater than in patients receiving a stented valve.
authors.affiliation: Department of Cardiovascular Sciences, General Hospital S. Maria della Misericordia, Udine, Italy.
authors.forename: S
authors.initials: S
authors.lastname: Gelsomino
authors.forename: G
authors.initials: G
authors.lastname: Morocutti
authors.forename: R
authors.initials: R
authors.lastname: Frassani
authors.forename: P
authors.initials: P
authors.lastname: Da Col
authors.forename: A
authors.initials: A
authors.lastname: Morelli
authors.forename: L
authors.initials: L
authors.lastname: Spedicato
authors.forename: G
authors.initials: G
authors.lastname: Minen
authors.forename: U
authors.initials: U
authors.lastname: Livi
mesh_terms: D000368:Aged; D001021:Aortic Valve / Q000000981:diagnostic imaging* / Q000601:surgery; D001024:Aortic Valve Stenosis / Q000503:physiopathology / Q000601:surgery*; D001830:Body Surface Area; D004452:Echocardiography; D005260:Female; D006350:Heart Valve Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D011474:Prosthesis Design; D013599:Systole; D013997:Time Factors; D018487:Ventricular Dysfunction, Left / Q000503:physiopathology / Q000601:surgery*; D016277:Ventricular Function, Left / Q000502:physiology*