PMID- 17592424
OWN - NLM
STAT- MEDLINE
DCOM- 20070824
LR  - 20070626
IS  - 1341-1098 (Print)
IS  - 1341-1098 (Linking)
VI  - 13
IP  - 3
DP  - 2007 Jun
TI  - Outcomes and hemodynamics after aortic valve replacement: a comparison of 
      stentless versus mechanical valves.
PG  - 165-71
AB  - PURPOSE: Some investigators suggest that hemodynamic outcomes may be superior 
      with the stentless aortic bioprosthesis when compared with a mechanical valve. 
      The goal of this study was to characterize outcomes and hemodynamic data 
      associated with each type of valve. SUBJECTS AND METHODS: Patient outcomes and 
      echocardiographic data were compared between 25 patients with stentless valves 
      and 59 patients with mechanical valves. RESULTS: There were no significant 
      differences in survival and freedom from cardiovascular adverse events between 
      two groups. The duration of anticoagulation therapy was limited to 3 months in 
      the stentless group. There was no significant difference in preoperative and 
      postoperative New York Heart Association (NYHA) status when comparing the two 
      groups, and NYHA status significantly improved in both groups (P<0.05). There was 
      no significant difference in the echocardiographic data when comparing the two 
      groups. CONCLUSION: Aortic valve replacement using the stentless valve and the 
      mechanical valve provided good clinical and hemodynamic outcomes. There was no 
      significant difference in these parameters when comparing the two groups. There 
      may be advantages in the limited required duration of anticoagulation therapy of 
      the stentless valve , especially in elderly patients. However, longer follow-up 
      is required before definitive conclusions regarding the benefits of the stentless 
      valve relative to the mechanical valve can be determined.
FAU - Inaba, Hirotaka
AU  - Inaba H
AD  - Department of Cardiac Surgery, Asahi General Hospital, Chiba, Japan.
FAU - Higuchi, Kazuhiko
AU  - Higuchi K
FAU - Koseni, Kenji
AU  - Koseni K
FAU - Ohsawa, Hiroshi
AU  - Ohsawa H
FAU - Kinoshita, Osamu
AU  - Kinoshita O
FAU - Funatogawa, Katsuyasu
AU  - Funatogawa K
FAU - Matsumoto, Minoru
AU  - Matsumoto M
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - Japan
TA  - Ann Thorac Cardiovasc Surg
JT  - Annals of thoracic and cardiovascular surgery : official journal of the 
      Association of Thoracic and Cardiovascular Surgeons of Asia
JID - 9703158
RN  - 0 (Anticoagulants)
SB  - IM
MH  - Aged
MH  - Anticoagulants/administration & dosage
MH  - *Aortic Valve
MH  - Bioprosthesis
MH  - Female
MH  - *Heart Valve Prosthesis
MH  - Humans
MH  - Male
MH  - Prosthesis Design
MH  - Treatment Outcome
EDAT- 2007/06/27 09:00
MHDA- 2007/08/25 09:00
CRDT- 2007/06/27 09:00
PHST- 2006/07/06 00:00 [received]
PHST- 2006/10/10 00:00 [accepted]
PHST- 2007/06/27 09:00 [pubmed]
PHST- 2007/08/25 09:00 [medline]
PHST- 2007/06/27 09:00 [entrez]
AID - atcs/2007_13_3/165 [pii]
PST - ppublish
SO  - Ann Thorac Cardiovasc Surg. 2007 Jun;13(3):165-71.