[Mitral double catheter-balloon valvuloplasty, hemodynamics evaluation of 52 cases one year after the procedure].
OBJECTIVE
To evaluate the late hemodynamic and angiographic results of 52 patients who underwent mitral valvoplasty by the double balloon technique in the treatment of the rheumatic mitral stenosis.


METHODS
The mean follow-up was of 18 months and the patients had a Doppler-echocardiogram and cardiac catheterization one year after dilatation. Of the 52 patients 84.6% were female and the mean age was 21.9% years. Eighty one percent were in NYHA class I whereas 5.7% had atrial fibrillation at the end of 18 months.


RESULTS
Immediately after valvoplasty 46 patients (88.5%) had a valvar area larger, and 6 (11.5%) smaller than 1.5 cm2. The first group had a good clinical outcome with maintenance of the clinical, echocardiographic and angiographic results in the late follow-up, including the diastolic gradient and the valvar area. Of the 6 cases with mitral area smaller than 1.5 cm2, 2 had a good clinical evolution, 2 were re-dilated, 1 was scheduled for surgery and the last one is under clinical management but with poor hemodynamic results. Three (5.7%) cases developed an atrial septal defect after the procedure, with hemodynamic repercussion in 1. Mitral regurgitation developed in 16 cases (+ in 8, +/++ in 8) without changes during the follow-up period.


CONCLUSIONS
Double balloon mitral valvoplasty is a safe effective method in the treatment of the rheumatic mitral stenosis, and offers a better evolution in patients with a valvar area larger than 1.5 cm2 after the dilatation.
Gomes
N L
NL
Instituto Dante Pazzanese de Cardiologia-São Paulo.
Esteves
C A
CA
Braga
S L
SL
Ramos
A
A
Meneghelo
Z M
ZM
Mattos
L A
LA
Sousa
A G
AG
de Almeida
C T
CT
Fontes
V F
VF
Sousa
J E
JE
D000293:Adolescent; D000328:Adult; D002404:Catheterization / Q000379:methods*; D017023:Coronary Angiography; D015150:Echocardiography, Doppler; D005260:Female; D005500:Follow-Up Studies; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D008946:Mitral Valve Stenosis / Q000503:physiopathology / Q000628:therapy*; D011247:Pregnancy; D012214:Rheumatic Heart Disease / Q000503:physiopathology / Q000628:therapy*; D012720:Severity of Illness Index
Valvoplastia mitral com duplo cateter-balão, avaliação hemodinâmica de 52 casos um ano depois do procedimento.