ISSN: 1859 - 2872
Morphological features and levels of mitral regurgitation by Doppler echocardiography in patients with chronic ischemic mitral regurgitation
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Abstract
Objective: To observe morphological features and levels of mitral regurgitation by Doppler echocardiography and its relationship with morphology and function of left ventricular in patients with chronic ischemic mitral regurgitation (IMR). Subject and method: 95 patients treated at Vietnam National Heart Institute, with chronic IMR due to restricted motion, of whom 55 had predominant apical tethering of both leaflets (symmetric group), 40 with predominant posterior tethering of both leaflets (asymmetric group) and 25 are normal (control group). The mitral deformation indexes, left ventricular (LV) global (volume, function and sphericity) and local (papillary muscle displacements and regional wall motion score index) remodeling were evaluated. Result: 100% of those with predominant apical tethering of both leaflets had the central-regurgitant jet and 92.5% of asymmetric group had the eccentric regurgitant jet. Compared to the control group, all the mitral deformation indexes of both former groups were significantly higher. The symmetric group had tenting area and coaptation height much larger/higher than those with predominant posterior tethering of both leaflets (p<0.05). All data of mitral deformation and global LV remodeling were significantly higher in the symmetric than asymmetric group (all most p<0.05). Conclusion: The patients in the asymmetric group show significant local LV remodelling and the patients in the symmetric group show global LV remodelling
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References
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