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[Percutaneous mitral valvuloplasty]
A Vahanian1, P L Michel, S Trabelsi
1Service de Cardiologie, Hôpital Tenon, Paris.
Insights
Percutaneous mitral commissurotomy effectively improved hemodynamics in severe mitral stenosis patients. This procedure offers a promising alternative to surgical intervention for select individuals with pliable valves.
Area of Science:
- Cardiology
- Interventional Cardiology
- Cardiac Surgery
Context:
- Severe mitral stenosis poses significant hemodynamic challenges.
- Percutaneous mitral commissurotomy (PMC) is an alternative to surgical approaches.
- Assessing the efficacy and safety of PMC is crucial for patient management.
Purpose:
- To evaluate the outcomes of attempted percutaneous mitral commissurotomy in adults with severe mitral stenosis.
- To compare the effectiveness of single versus double balloon techniques.
- To identify patient characteristics associated with successful procedures and optimal results.
Summary:
- Thirty-six adults with severe mitral stenosis underwent attempted PMC; 30 procedures were successful.
- Significant improvements in transvalvular pressure gradient and mitral valve surface area were observed post-procedure (p < 0.01).
- The double balloon technique yielded better results in patients with less valve destruction, with 2 cases experiencing aggravated mitral regurgitation.
Impact:
- PMC demonstrates clear hemodynamic improvement in suitable patients with severe mitral stenosis.
- The procedure is a viable alternative to closed heart mitral commissurotomy for select patients.
- Further research with larger cohorts and longer follow-up is warranted to establish long-term outcomes and morbidity.
Abstract:
Thirty six adults with severe mitral stenosis underwent attempted percutaneous mitral commissurotomy. The valvuloplasty could not be performed in 6 cases; post-transseptal haemopericardium (1 case), inability to cross the mitral valve or the septum (5 cases). Therefore percutaneous commissurotomy was performed in 30 cases; the average age was 43 +/- 17 years (range 20-79 years). Eight patients had undergone previous valve surgery; 24 patients were very symptomatic (NYHA Classes III or IV). The valvuloplasty was performed with a single balloon in 22 cases and by simultaneous inflation of two balloons in 8 cases. Moderate mitral regurgitation present before the procedure was significantly aggravated in 2 cases leading to secondary surgery. In the other patients percutaneous commissurotomy led to a clear-cut haemodynamic improvement; the transvalvular pressure gradient fell from 15 +/- 4 to 6 +/- 2 mm Hg, p less than 0.01 and mitral valve surface area increased from 1.1 +/- 0.2 to 2.2 +/- 0.4 cm2, p less than .001. The best results were obtained with the double balloon technique in patients with little valve destruction. Percutaneous mitral valvuloplasty is therefore a tempting alternative to closed heart mitral commissurotomy in pure mitral stenosis with pliable valves. Larger series with a longer follow-up are needed to assess the morbidity and long-term results of this technique.