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Updated: Jun 12, 2026

A Simplified Stepwise Approach to Echo Guidance during Percutaneous Mitral Valve Repair
Published on: October 16, 2021
Changes in left ventricular twist after mitral valve repair
Toshinobu Kazui1, Hiroyuki Niinuma, Junichi Tsuboi
1Heart Center, Department of Cardiovascular Surgery, St. Luke's International Hospital, Tokyo, Japan. t-kazui@pf6.so-net.ne.jp
Mitral valve repair preserves left ventricular function, as evidenced by normalized left ventricular twist after surgery. Echocardiographic tissue tracking confirmed improved cardiac function post-operation.
Area of Science:
- Cardiology
- Cardiac Surgery
- Echocardiography
Background:
- Mitral valve disease can impair left ventricular function.
- Assessing left ventricular function post-mitral valve repair is crucial.
Purpose of the Study:
- To investigate if mitral valve repair preserves left ventricular function using echocardiographic tissue tracking.
- To evaluate changes in left ventricular rotation and twist after mitral valve repair.
Main Methods:
- Studied 16 healthy controls and 18 patients undergoing mitral valve repair.
- Performed transthoracic echocardiography pre- and post-surgery.
- Measured left ventricular rotation using Vector Velocity Imaging.
Main Results:
- Left ventricular ejection fraction decreased post-surgery but remained within normal limits.
- Left ventricular twist was elevated pre-operatively and normalized post-surgery.
- New York Heart Association functional class improved significantly after repair.
Conclusions:
- Mitral valve repair normalizes left ventricular twist, indicating preserved left ventricular function.
- Echocardiographic tissue tracking is a valuable tool for assessing cardiac function after valve repair.
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