Intraoperative post-annuloplasty three-dimensional valve analysis does not predict recurrent ischemic mitral...

Area of Science:

• Cardiovascular Surgery
• Cardiac Imaging
• Echocardiography

Background:

• Ischemic mitral regurgitation (IMR) recurrence after ring annuloplasty is common.
• Pre-repair 3D echocardiography (3DE) effectively predicts IMR recurrence.
• The study investigates immediate post-repair 3DE parameters for predicting recurrence.

Purpose of the Study:

• To quantify changes in 3DE annular and leaflet tethering parameters after IMR repair.
• To determine if intraoperative post-repair 3DE can predict IMR recurrence at 6 months.

Main Methods:

• 35 patients with IMR underwent intraoperative 3DE before and after undersized ring annuloplasty.
• Advanced modeling assessed 3D annular geometry and leaflet tethering.
• IMR recurrence was evaluated at 6 months using transthoracic echocardiography.

Main Results:

• Annuloplasty acutely reduced annular dimensions and tethering volume, increasing tethering angles.
• No significant differences in post-repair annular geometry or tethering were found between recurrent and non-recurrent IMR groups.
• No intraoperative post-repair predictors for IMR recurrence were identified.

Conclusions:

• Undersized ring annuloplasty acutely alters mitral geometry but may not resolve chronic left ventricular remodeling, leading to IMR recurrence.
• Immediate post-repair 3DE does not fully capture chronic remodeling, explaining its lack of predictive power for recurrence.
• Pre-repair 3DE, reflecting chronic remodeling, remains crucial for predicting IMR recurrence after annuloplasty.