Modified 'dumbbell' technique: a simple and intuitive method to position balloon-expandable stent valves

Area of Science:

• Cardiology
• Medical Imaging
• Interventional Cardiology

Background:

• Intraoperative cardiac imaging is crucial for transcatheter aortic valve replacement (TAVR).
• New imaging techniques aim to improve stent valve positioning and implantation but require significant investment and expertise.
• Current advanced methods often necessitate contrast media, posing risks, especially for elderly patients.

Purpose of the Study:

• To present a simple, intuitive method for positioning balloon-expandable stent valves during TAVR.
• To offer an alternative to complex imaging techniques and angiography-based procedures.
• To enhance TAVR accessibility in centers without advanced infrastructure.

Main Methods:

• Development of an evolution of the 'dumbbell' technique for echocardiography-guided TAVR.
• Utilizes partial balloon catheter inflation to secure the crimped valve in the aortic valve orifice.
• Performs TAVR without the need for angiography or specialized echocardiographic skills.

Main Results:

• The described method effectively positions the stent valve near the ideal landing zone.
• Eliminates the need for contrast medium injections, reducing risks like postoperative kidney failure.
• The technique is straightforward and does not require advanced echocardiographic knowledge.

Conclusions:

• This simplified positioning method enhances the safety and accessibility of transcatheter aortic valve replacement.
• It is suitable for centers lacking hybrid operating rooms or advanced imaging equipment.
• The technique represents a significant advancement for echocardiography-guided TAVR without angiography.