Intracardiac echocardiography from coronary sinus

Area of Science:

• Cardiology
• Medical Imaging

Background:

• Intracardiac echocardiography (ICE) is crucial for percutaneous interventions and electrophysiology (EP) procedures.
• Standard ICE involves catheter placement in the right atrium, right ventricle, or left atrium via transseptal puncture.
• ICE provides real-time, high-quality, near-field cardiac anatomy evaluation.

Purpose of the Study:

• To provide illustration-based guidance on identifying critical cardiac structures using coronary sinus echocardiography (CSE).
• To highlight CSE as an alternative ICE approach, particularly in challenging anatomical scenarios.

Main Methods:

• Positioning the ICE catheter within the coronary sinus (CS) for imaging.
• Utilizing CSE to visualize cardiac structures, including the left atrium (LA), left atrial appendage (LAA), left ventricle (LV), and mitral annulus.
• Comparing CSE advantages over standard ICE in specific patient populations.

Main Results:

• CSE offers enhanced catheter stability compared to standard ICE.
• CSE provides superior visualization of the LA, LAA, LV, and mitral annulus.
• CSE is advantageous when interatrial septum anatomy impedes standard transseptal ICE catheter advancement.

Conclusions:

• CSE is a valuable alternative ICE technique offering distinct anatomical views.
• CSE can overcome limitations associated with standard ICE in certain patients.
• Illustration-based guidance can improve operator proficiency in CSE for critical cardiac structure identification.