[Mitral valvuloplasty by balloon catheter. Early results and one-year follow-up].
OBJECTIVE
To evaluate percutaneous mitral balloon valvuloplasty (PMBV) results immediately and one year follow-up.


METHODS
One hundred and four procedures in 103 patients, 89 (87%) were women and mean age was 33. Ninety five (91%) had mitral stenosis, 7 (7%) mitral restenosis and 2 (2%) stenotic bioprosthesis. Twelve (10%) patients were in functional class (FC) II (NYHA), 73 (70%) in FC III and 19 (18%) in FC IV. Ninety three (89%) were in sinusal rhythm, 10 (10%) had atrial fibrillation and 1 (1%) junctional rhythm. In 99% cases the transseptal access was used.


RESULTS
The comparative haemodynamic results late x immediately after-PMBV were mitral valve area (cm2) 0.75 +/- 0.27 x 1.68 +/- 0.48 (p < 0.0001), gradient AE-VE average (mmHg) 19.52 +/- 8.03 x 5.44 +/- 4.38 (p < 0.0001); average pressure AE (mmHg) 24.72 +/- 8.76 x 9.63 +/- 6.11 (p < 0.0001), cardiac index (L/min/m2) 2.55 +/- 0.69 x 2.92 x 0.77 (p < 0.0001); average pressure PA (mmHg) 40.17 +/- 16.52 x 25.65 +/- 13.77 (p < 0.0001). The echocardiography results pré-PMBV, post-PMBV, 6 and 12 months after PMBV were respectively: mitral valve area (cm2) 0.89 +/- 0.23 x 1.87 +/- 0.41 x 1.72 +/- 0.43 x 1.64 +/- 0.44 and mitral transvalvar gradient (mmHg) 13.12 +/- 4.66 x 6.44 +/- 2.93 x 7.72 +/- 3.24 x 8.30 +/- 4.17. There was one death immediately after-PMBV in a patient with pulmonary thromboembolism. Four (4%) had severe mitral regurgitation and went to surgery (1 death). There were 2 mitral reestenosis.


CONCLUSIONS
For selected patients PMBV is a safe method and the good results are maintained in 1 year follow-up.
Cardoso
L F
LF
Instituto do Coração do Hospital das Clínicas-FMUSP, São Paulo.
Ratti
M A
MA
Grinberg
M
M
Medeiros
C C
CC
Tarasoutchi
F
F
Rossi
E G
EG
Avila
W S
WS
Pomerantzeff
P M
PM
de Moraes
A V
AV
Arie
S
S
D000293:Adolescent; D000328:Adult; D000368:Aged; D002404:Catheterization / Q000009:adverse effects; D005069:Evaluation Studies as Topic; D005260:Female; D005500:Follow-Up Studies; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D008946:Mitral Valve Stenosis / Q000628:therapy*
Valvoplastia mitral por cateter balão. Resultados imediatos e seguimento de 1 ano.