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Three-Dimensional Modelling of Indexed Papillary Muscle Displacement in Patients Requiring Mitral Valve Surgery Using
Zhi Xian Ong1,2, Ashlynn Ai Li Ler1, Liang Shen3
1Department of Surgery, Yong Loo Lin School of Medicine, National University of Singapore, Singapore 117599, Singapore.
Journal of Clinical Medicine
|January 8, 2025
Summary
Four-dimensional echocardiography effectively assesses papillary muscle displacement in patients with ischemic mitral regurgitation (IMR), showing a significant correlation between IMR and indexed papillary muscle displacement.
Area of Science:
- Cardiology
- Medical Imaging
- Echocardiography
Background:
- Two-dimensional and three-dimensional echocardiography are standard for assessing mitral regurgitation.
- Four-dimensional echocardiography's utility in this area remains unexplored.
Purpose of the Study:
- Evaluate the efficacy of 4D echocardiography in assessing mitral regurgitation.
- Determine papillary muscle displacement in patients with ischemic mitral regurgitation (IMR) and degenerative mitral regurgitation (DMR).
- Compare papillary muscle displacement between IMR and DMR groups.
Main Methods:
- Thirty-four patients were divided into IMR and DMR groups.
- 4D echocardiographic variables were acquired and analyzed.
- Pearson's correlation assessed the relationship between IMR and papillary muscle displacement.
Main Results:
- Mean papillary muscle displacement was higher in the IMR group (38 ± 6.7 mm) compared to the DMR group (31.8 ± 6.1 mm).
- Indexed papillary muscle displacement was also greater in the IMR group (22.8 ± 3.7 mm) versus the DMR group (18.4 ± 3.5 mm).
- Significant correlations were found between IMR and both papillary muscle displacement (p=0.009) and indexed papillary muscle displacement (p=0.002).
Conclusions:
- Four-dimensional echocardiography is effective for evaluating morphological changes in IMR.
- The study successfully determined papillary muscle displacement in patients undergoing mitral valve surgery.
- A positive correlation exists between IMR and indexed papillary muscle displacement.
