[Comparison between the use of unifoil double balloon and bifoil balloon in successful mitral valvuloplasty by balloon catheter].
OBJECTIVE
To compare immediate and long term results balloon mitral valvuloplasty (BMV) using double balloon or bifoil balloon.


METHODS
One hundred and thirteen consecutive cases of BMV used aleatory double balloon (group DB--55 cases) or bifoil balloon (group BF--16 cases). Patients were similar regarding to age, sex, valvopaty etiology, functional class and echocardiographic score. Seventy one (63%) patients achieved 12 months follow-up.


RESULTS
In group DB there were 2 (4%) insuccess, 2 (4%) cardiac tamponade and 2 (4%) deaths, 91% patients had immediate criteria of success. Mitral valve area (MVA) increased from 0.8 to 1.69cm2 and mitral gradient (G) by echodopplercardiographic (ECHO) decreased from 17.9 to 4.8mmHg. Three (5%) patients developed severe mitral regurgitation (MR) and needed surgical intervention. At follow-up 2 (4%) developed mitral restenosis. MVA estimated by ECHO study after one year follow-up was inferior to 1.15cm2 in 15 (32%) cases, between 1.5 and 2.0cm2 in 17 (37%) and superior to 2.0cm2 in 14 (31%). In group BF there were 2 (12.5%) insuccess, 4 (25%) developed severe MR occurring 1 death immediate post-operative mitral valve replacement. Among 14 (87%) success cases, MVA increased from 0.8 to 1.89cm2 and G decreased from 18 to 6.4mmHg. Lately 2 (12.5%) needed surgical intervention because significative MR. At 12th month follow-up the ECHO study showed that in one (10%) case MVA was < 1.5cm2, and in 3 (27%) cases was between 1.5 and 2.0cm2.


CONCLUSIONS
There were similar good results in both groups, however group DB had more restenosis, cardiac tamponade and vascular complications and group BF had more severe MR.
Cardoso
L F
LF
Instituto do Coração do Hospital das Clínicas-FMUSP.
Grinberg
M
M
Ratti
M A
MA
de Magalhães
L P
LP
Antelmi
I
I
Medeiros
C C
CC
Tarasoutchi
F
F
Rossi
E G
EG
Avila
W S
WS
Bellotti
G
G
D000293:Adolescent; D000328:Adult; D000368:Aged; D021721:Balloon Occlusion; D002404:Catheterization / Q000009:adverse effects / Q000379:methods*; D002985:Clinical Protocols; D015150:Echocardiography, Doppler; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D008944:Mitral Valve Insufficiency / Q000209:etiology*; D008946:Mitral Valve Stenosis / Q000000981:diagnostic imaging / Q000628:therapy*
Comparação entre uso de duplo balão unifoil e balão bifoil no sucesso da valvoplastia mitral por cateter balão.