Non-surgical mitral commissurotomy using metallic commissurotome

Area of Science:

• Cardiology
• Interventional Cardiology
• Medical Devices

Background:

• Severe mitral stenosis poses significant risks and impacts quality of life.
• Traditional surgical or balloon commissurotomy have limitations.
• A need exists for effective, potentially reusable, and cost-effective mitral stenosis treatments.

Purpose of the Study:

• To evaluate the safety and efficacy of a novel miniaturized metallic commissurotome for percutaneous transatrial mitral commissurotomy (PTMC).
• To assess hemodynamic and echocardiographic outcomes in patients with severe mitral stenosis undergoing PTMC with this device.

Main Methods:

• Twenty-four patients with severe mitral stenosis underwent PTMC using a miniaturized metallic commissurotome (12 F catheter).
• The reusable device was sterilized and opened to a maximal diameter of 39.0 +/- 1.7 mm.
• Echocardiography and hemodynamic measurements were performed pre- and post-procedure.

Main Results:

• The procedure was successful in 95.8% of patients.
• Significant improvements were observed in mitral valve area (0.9 to 2.1 cm2) and reductions in left atrial and pulmonary artery pressures (p < 0.001).
• Complications included one case of severe mitral regurgitation and one of transient aphasia.

Conclusions:

• Percutaneous transatrial mitral commissurotomy with the miniaturized metallic commissurotome is a safe and effective treatment for severe mitral stenosis.
• The device's reusability suggests potential cost-effectiveness compared to single-use alternatives.
• This technique offers a reliable alternative to balloon mitral commissurotomy.