PMID- 10935563
OWN - NLM
STAT- MEDLINE
DCOM- 20000822
LR  - 20061115
IS  - 0028-8446 (Print)
IS  - 0028-8446 (Linking)
VI  - 113
IP  - 1113
DP  - 2000 Jul 14
TI  - Initial experience with the freestyle stentless aortic bioprosthesis.
PG  - 266-8
AB  - AIMS: We report our initial experience with the Freestyle aortic bioprosthesis. 
      METHODS: This prosthesis was implanted in 40 patients between February 1993 and 
      December 1998. Operative indications were aortic stenosis in 32 patients (80%), 
      aortic regurgitation in seven patients (18%) and a combined lesion in one (3%). 
      The mean patient age was 71.4+/-9.7 (SD) years, with 29 (72%) females. 
      Pre-operative New York Heart Association (NYHA) class was III or IV in 28 (70%). 
      Left ventricular systolic function was impaired in four (10%). Six (15%) patients 
      had undergone previous cardiac surgery. Concomitant procedures were carried out 
      in 21 patients (53%). RESULTS: Early mortality was zero. Early morbidity included 
      three re-operations for bleeding, one cerebrovascular event, one haemorrhagic 
      complication and one case of valve dysfunction. At follow up (range 4.6 to 75.6 
      months, mean 29.5+/-25.5) there has been one (3%) late death which was non valve 
      related, one (3%) episode of study-valve endocarditis, and three (8%) 
      thromboembolic episodes. NYHA Class was I or II in all but one survivor. 
      Echocardiographic follow-up has shown no further instances of valve dysfunction 
      with satisfactory haemodynamic parameters at 24-months post-operation, and a 
      significant and sustained regression of left ventricular mass. CONCLUSIONS: The 
      initial experience with the Freestyle valve is that it results in good clinical 
      and haemodynamic performance, suggesting it as an ideal bioprosthesis for this 
      patient group.
FAU - Wong, S P
AU  - Wong SP
AD  - Department of Cardiology, Green Lane Hospital, Auckland.
FAU - Legget, M E
AU  - Legget ME
FAU - Raudkivi, P J
AU  - Raudkivi PJ
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - New Zealand
TA  - N Z Med J
JT  - The New Zealand medical journal
JID - 0401067
SB  - IM
MH  - Adult
MH  - Aged
MH  - Aged, 80 and over
MH  - Aortic Valve
MH  - Aortic Valve Insufficiency/mortality/physiopathology/*surgery
MH  - Aortic Valve Stenosis/mortality/physiopathology/*surgery
MH  - *Bioprosthesis
MH  - Female
MH  - *Heart Valve Prosthesis
MH  - Heart Valve Prosthesis Implantation/*instrumentation/mortality
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - New Zealand/epidemiology
MH  - Prosthesis Design
MH  - Retrospective Studies
MH  - Survival Rate
MH  - Ventricular Function, Left
EDAT- 2000/08/10 11:00
MHDA- 2000/08/29 11:01
CRDT- 2000/08/10 11:00
PHST- 2000/08/10 11:00 [pubmed]
PHST- 2000/08/29 11:01 [medline]
PHST- 2000/08/10 11:00 [entrez]
PST - ppublish
SO  - N Z Med J. 2000 Jul 14;113(1113):266-8.