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Arch. cardiol. Méx ; 72(4): 290-296, 2002. ilus, tab
Article in Spanish | LILACS | ID: lil-775068

ABSTRACT

La estenosis mitral pura requiere de manejo mecánico una vez que su orificio disminuye a valores críticos. Iniciamos la valvuloplastía mitral en 1994 con técnica de doble balón y desde 1996 con un solo balón tipo "Nucleus", presentamos los resultados inmediatos y comparativos entre ambas técnicas. Incluimos 31 pacientes distribuidos en 2 grupos similares: el Grupo A (doble balón) de 15 pacientes, Wilkins promedio de 7.13 ± .80, área valvular mitral prevalvuloplastía de .83 ± .25 cm² y gradiente transvalvular mitral de 17.06 ± 7.6 mmHg; Grupo B (balón Nucleus) de 16 pacientes, Wilkins de 7.6 ± .71, área valvular mitral 1.05 ± .33 cm², gradiente transvalvular de 14.26 ± 5.00 mmHg. Postvalvuloplastía el área valvular aumentó en el Grupo A y en el B respectivamente a 1.99 ± .49 cm² y 2.67 ± .63 cm² (p < .001); el gradiente disminuyó respectivamente a 5.55 ± 2.50 mmHg y 2.95 ± 2.32 mmHg (p < .001). En ambos grupos hubo incremento de insuficiencia mitral en 1 paciente, se documentó cortocircuito interauricular en 1 paciente del Grupo A. La valvuloplastía mitral tiene mejores resultados y es más práctica con el balón Nucleus que con doble balón.


Mitral stenosis requires mechanical management once the area decreases to critical values. We began practicing mitral valvuloplasty in 1994 with the double balloon technique and, since 1996, we have been performing the procedure using a single balloon called "Nucleus". We compare the immediate results of both techniques. We included 31 patients divided in two similar groups: group A (double balloon) of 15 patients, average Wilkins score of 7.13 ± .80, mitral valve area pre-valvuloplasty of .83 ± .25 cm² and transmitral gradient of 17.06 ± 7.6 mmHg; group B (Nucleus balloon) of 16 patients, Wilkins score of 7.6 ± .71, mitral valve area 1.05 ± .33 cm², transvalvular gradient of 14.26 ± 5.00 mmHg. Post-valvuloplasty valvular area increased in group A and group B, respectively, to 1.99 ± .49 cm² and 2.67 ± .63 cm² (p < .001); gradient decreased to 5.55 ± 2.50 mmHg, and 2.95 ± 2.32 mmHg (p < .001). Increase of mitral insufficiency of one grade was present on one patient of each group; one patient of group A had significant interatrial shunt after the procedure. The mitral valvuloplasty yields better results and is more practical when performed with the Nucleus balloon than with the double balloon.


Subject(s)
Adolescent , Adult , Aged , Female , Humans , Male , Middle Aged , Catheterization/methods , Mitral Valve Stenosis/therapy
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