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2006, Number 1

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Arch Cardiol Mex 2006; 76 (1)

Long-term results of mitral percutaneous valvuloplasty with Inoue technique. Seven-years experience at the Cardiology Hospital of the National Medical Center “Siglo XXI”, IMSS

Flores FJ, Ledesma VM, Palomo VJA, Montoya GS, Estrada GJ Astudillo SR, Abundes VA, González DB, Argüero SR, Farell CJ

Language: Spanish
References: 30
Page: 28-36
PDF size: 94.04 Kb.


ABSTRACT

Since the last decade, percutaneous balloon mitral valvuloplasty with Inoue catheter is considered the treatment of choice for selected patients (mobile valve, no calcification and minimal subvalvular disease) with rheumatic mitral stenosis. Objective: We present the seven-year followup experience of 456 patients treated with this technique in the catheter laboratory of the Cardiology Hospital in National Medical Center SXXI. Material and methods: It is a retrospective, transversal and observational study performed with data obtained from January 1994 and December 2000, with a follow-up of 58.5 ± 26.6 months (range 12-96 mean 22). Results: We achieve an initial success of 82.8%, improvement of initial mitral valve area from 0.9 ± 0.1 to 1.8 ± 0.3 cm2, with a gain area from 88 to 106% (p ‹ 0.001). At the end of the follow-up, the mean valvular area was maintained in 1.7 ± 0.3 cm2 in 69.8% of the cases. We found a significant reduction of transmitral gradient and of the pulmonary artery systolic pressure immediately after the procedure; 93.1% of patients were in NYHA functional class II at the end of the follow-up, 11.6% presented complications (mitral regurgitation as the most important), in 15.9% of them, due to leaflet rupture, but only 9.1% corresponded to severe grade III-IV. Complications: Only one patient died due to septal perforation; 93.8% of the patients remained free of major cardiac events at the end of the study. Only 6.1% of the patients required surgery at the end of the follow-up; 5.5% were in functional class NYHA IIIIV and restenosis occurred in 14.6%. Conclusion: Percutaneous balloon mitral valvuloplasty with Inoue balloon catheter is a safe and effective technique for treating rheumatic mitral stenosis with Wilkins score ‹ 10, with minimal risk and complications and offers good life expectancy with absence of major cardiac events in › 90%. From these patients, 93.1% remained in NYHA-II or -I functional class and the incidence of restenosis decreased.


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