Balloon mitral commissurotomy: an intraoperative assessment

Area of Science:

• Cardiovascular Medicine
• Interventional Cardiology
• Cardiac Surgery

Background:

• Balloon catheter technology has advanced cardiovascular disease management.
• Balloon mitral commissurotomy is an alternative to surgery for mitral stenosis, with variable reported outcomes.
• Objective evaluation of balloon mitral commissurotomy efficacy is necessary due to result variability.

Purpose of the Study:

• To objectively evaluate the efficacy of balloon mitral commissurotomy in patients with isolated mitral stenosis.
• To assess the degree of commissural split achieved with balloon dilation compared to surgical completion.

Main Methods:

• Balloon mitral commissurotomy performed on 11 patients with NYHA class III/IV isolated mitral stenosis.
• Utilized single and double balloon techniques, with surgical instrument completion when necessary.
• Measured commissural split using nerve hooks and calipers, comparing balloon dilation to surgical valvotomy outcomes.

Main Results:

• Complete commissurotomy via balloon technique achieved in 18.2% of patients.
• Balloon dilation provided 50% to 80% commissural split in 81.8% of patients, requiring instrumental completion.
• Instrumental completion resulted in good outcomes for the majority of patients.

Conclusions:

• Balloon mitral commissurotomy generates circumferential force, aiding in commissural cleavage and hemodynamic improvement.
• The procedure can be life-saving in critical mitral stenosis for selected patients with pliable leaflets and minimal subvalvular pathology.
• Combined balloon and surgical techniques offer effective management for mitral stenosis.