Left ventricular muscle mass regression after aortic valve replacement
Journal of Korean Medical Science
;
: 511-519, 1999.
Artigo
em Inglês
| WPRIM
| ID: wpr-187368
ABSTRACT
Implanting a valve that will reduce left ventricular mass is critical in aortic stenosis. Regression of left ventricular hypertrophy in 46 aortic valve replacement (AVR) patients receiving a St. Jude Medical (SJM) valve was assessed by serial electrocardiographic and echocardiographic studies during the preoperative, immediate, and late postoperative periods. The patients were divided into three groups according to valve size; 19 mm group (n=9), 21 mm group (n=20), and 23+mm group (n=17). There was no surgical mortality. The NYHA functional class improved from an average of 2.2+/-0.8 preoperatively to 1.3+/-0.5 post-operatively. Left ventricular muscle mass index (LVMI) regression failed to reach statistical significance in the 19 mm group, whereas in the other two groups a steady decrease in the LVMI occurred with follow up. ECG findings were less remarkable showing insignificant differences in voltage among the three groups (p=0.000). In conclusion, the current data suggest that the 19 mm SJM valve may not result in satisfactory left ventricular muscle mass regression despite adequate function, even in small patients. Therefore, additional procedures to accommodate a larger valve may be warranted in the aortic annulus smaller than 21 mm.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Assunto principal:
Valva Aórtica
/
Estenose da Valva Aórtica
/
Período Pós-Operatório
/
Indução de Remissão
/
Próteses Valvulares Cardíacas
/
Ecocardiografia
/
Análise Multivariada
/
Fatores de Risco
/
Seguimentos
/
Resultado do Tratamento
Tipo de estudo:
Estudo de etiologia
/
Estudo observacional
/
Estudo prognóstico
/
Fatores de risco
Limite:
Adulto
/
Idoso
/
Feminino
/
Humanos
/
Masculino
Idioma:
Inglês
Revista:
Journal of Korean Medical Science
Ano de publicação:
1999
Tipo de documento:
Artigo
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