Studies on percutaneous transvenous mitral commissurotomy using a modified transseptal approach

Area of Science:

• Cardiology
• Interventional Cardiology
• Cardiac Catheterization

Background:

• Percutaneous transvenous mitral commissurotomy (PTMC) is a key treatment for mitral stenosis.
• Trans-septal catheterization is crucial for accessing the mitral valve, but carries risks.
• A modified Brockenbrough technique offers a potential alternative for trans-septal access.

Purpose of the Study:

• To evaluate the efficacy and safety of a modified Brockenbrough trans-septal catheterization technique for PTMC.
• To assess the success rate of guide-wire insertion through the foramen ovale without atrial septal puncture.
• To determine if pre-existing patent foramen ovale impacts the procedure's success.

Main Methods:

• Modified Brockenbrough technique applied in 11 patients undergoing PTMC.
• Coiled guide-wire insertion through the foramen ovale was attempted.
• The Brockenbrough needle was used for dilator stability and orientation.
• PTMC performed using an Inoue single balloon catheter.

Main Results:

• Successful guide-wire insertion through the foramen ovale in 8/11 (72.7%) patients without atrial septal puncture.
• PTMC completed without complications in all patients.
• Pre-operative transesophageal echocardiography identified patent foramen ovale in only 1/11 (9.0%) patients.
• The presence of patent foramen ovale did not affect procedural success.

Conclusions:

• The modified Brockenbrough technique facilitates trans-septal access for PTMC, potentially bypassing the need for atrial septal puncture.
• This method demonstrates high success rates and safety, offering a valuable alternative for mitral stenosis treatment.
• Precision and caution are essential for optimal outcomes with this modified technique.