Wynik wyszukiwania w bazie Polska Bibliografia Lekarska GBL

Zapytanie: HAYTON
Liczba odnalezionych rekordów: 2



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Tytuł oryginału: Hemodynamic performance after stented vs stentless aortic valve replacement.
Autorzy: Jasiński M. J., Hayton J., Kadziola Z., Woś S[tanisław], Sosnowski A. W.
Źródło: J. Cardiovasc. Surg. 2002: 43 (3) s.313-317, il., tab., bibliogr. 10 poz.
Sygnatura GBL: 311,845

Hasła klasyfikacyjne GBL:
  • chirurgia
  • kardiologia
  • transplantologia

    Typ dokumentu:
  • tytuł obcojęzyczny
  • praca kliniczna
  • praca opublikowana za granicą

    Wskaźnik treści:
  • ludzie
  • dorośli = 65 r.ż.
  • płeć męska
  • płeć żeńska

    Streszczenie angielskie: Background. Stentless bioprostheses are anticipated to cause improved hemodyanmics and increased longevity over stented bioprosthesis. We have compared echocardiographic analysis of stented bioprosthesis "Freestyle" with stented "Mosaic" bioprosthesis. Because of similar technology (0 pressure fixation, anticalcification) any differences may relate to stent. Methods. Twenty-eight patients undergoing AVR were randomly assigned to receive either stented or stentless. Echocardiograms, by means of M-mode and Doppler were performed early, 3-6 months and 1 year postoperatively. Results. The peak flow velocity was significantly lower in teh stentless group, especially 1 week and 6 months after surgery. Mean transvalvular gradient dropped significantly in stentless group and did not change in stented group. EOA did not change significantly in either of groups. AoV velocity time integral was increasing in stentless group. LV mass had fallen significantly in both groups but degree of mass reduction was comparable. Conclusions. There are marked improvements of stentless valves hemodynamics. However it is not necessary equal to higher degree of LV mass reduction during 1 year follow-up.

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    Tytuł oryginału: Evaluation of haemodynamic effects of stentless versus conventional stended biological aortic valves.
    Tytuł polski: Biologiczne protezy aortalne bezstelażowe i stelażowe. Właściwości hemodynamczne.
    Autorzy: Jasiński Marek J., Hayton Julie, Kadzioła Zbigniew, Gołba Krzysztof, Biernat Jolanta, Szafranek Adam, Bachowski Ryszard, Woś Stanisław, Sosnowski Andrzej W.
    Źródło: Kardiol. Pol. 2002: 56 (6) s.610-617, il., tab., bibliogr. 10 poz. - Tekst równol. w jęz. pol.
    Sygnatura GBL: 313,397

    Hasła klasyfikacyjne GBL:
  • kardiologia

    Typ dokumentu:
  • badanie porównawcze

    Wskaźnik treści:
  • ludzie
  • płeć męska
  • płeć żeńska

    Streszczenie angielskie: Background. Increasing data suggest that stentless biological aortic valves may be more durable and cause better haemodynamic imporvement than convetional biological aortic valves. Aim. To compare the haemodynamic effects of stentless versus conventonal stented bioprostheses of aortic valve. Methods. The study gorup consisted of 28 patients who were selected from 100 consecutive patients who underwent aortic valve replacement in 1996 and 1997. Fourteen patiens (7 males, mean age 68 ń 5 years) received a stentless bioprosthesis (Freestyle wheras in the remaining fourteen (7 males, mean agae 73 ń 6 years) a conventional aortic valve (mosaic) was implanted. Both groups were matched for age, gender and the size of the implanted valve. Because of the same technology of valve fixation and anticalcification, the differences between the two types of valves may be only due to the presence of stent. Haemodynamic effect were assessed using echocardiography performed just after, 6 months and 12 months afte surgery. Flow velocities across the valve and the left ventricular outflow tract, fractional chortening and left ventricular mass were measured. Results. The maximal flow velocity across the valve was significantly lower in the stentless group compared with the patients with stented valve. Also, the mean transvalvular gradient significantly decreased in the former group of patients. The regresson of the left ventricular mass was similar in both groups. Left ventricular ejection fraction increased in both groups, however, the improvement was significantly greater in the patients with a seentless valve. Conclusions. Haemodynamic effects of stentless prosthetic aortic valves are better than those of conventional stented bioprosthesis.

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