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  • Title: [Percutaneous mitral commissurotomy: immediate and short-term results].
    Author: Boscarini M, Repetto S, Cecchin G, Stifani A, Macchi G, Morandi F, Limido A, Binaghi G.
    Journal: G Ital Cardiol; 1991 Nov; 21(11):1185-94. PubMed ID: 1809622.
    Abstract:
    31 symptomatic patients with mitral stenosis were selected for percutaneous transvenous mitral commissurotomy using Inoue catheter. The patients were selected using the echocardiographic score for: leaflets mobility, leaflets thickening, subvalvular thickening, degree of calcifications. All patients had a score less than or equal to 8 and represented 17.5% of the patients studied in our echocardiographic laboratory for mitral stenosis. We were able to perform the commissurotomy in 30 of them. Mean left atrial pressure decreased from 26 +/- 5.2 mmHg to 14.6 +/- 6 mmHg (p less than 0.001). The mean mitral diastolic pressure gradient decreased from 8.9 +/- 3.1 mmHg to 3.9 +/- 1.3 mmHg (p less than 0.001). The mitral valve area, using the echocardiographic Pressure Half Time (PHT), increased from 0.94 +/- 0.17 cmq to 1.96 +/- 0.33 cmq (p less than 0.001). Mitral regurgitation, angiographically evaluated in 29 patients, increased in 11 (38%), being of degree + + + in 3 patients. There were 2 heart tamponades and 5 cases (16.6%) of left-to-right shunt with Qp / Qs less than 2. After 3 months, the follow-up showed improvement of one or more functional classes in 96.6% of all patients. The mitral valve area, determined after 6 months in 24 patients by PHT, was stable (1.98 +/- 0.31 vs 1.93 +/- 0.25) (p = 0.5); we did not find mitral stenosis recurrence in any instance. In the first 10 patients, after 1 year, the results are stable (1.85 +/- 0.28 cmq vs 1.93 +/- 0.21 cmq) (p = 0.5) without mitral stenosis recurrence. These data suggest that in selected tight mitral stenosis the percutaneous transvenous commissurotomy may be alternative to the open surgical solution. Using an Inoue catheter, the percutaneous transvenous mitral commissurotomy is easier and the complications are few. The major procedural hazards derive from the transseptal technique.
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