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Three-dimensional characteristics of functional mitral regurgitation in patients with severe left ventricular dysfunction: a real-time three-dimensional colour Doppler echocardiography study
- Source :
- Heart. 94:590-596
- Publication Year :
- 2008
- Publisher :
- BMJ, 2008.
-
Abstract
- We sought to evaluate the three-dimensional (3D) features of functional mitral regurgitation (FMR) and their geometric determinants by real-time 3D colour Doppler echocardiography.Real-time 3D colour Doppler echocardiography was performed in 52 patients with severe left ventricular dysfunction. With aliasing velocity set around 40 cm/s, proximal isovelocity surface area (PISA) radius was measured on medial, central and lateral antero-posterior planes at a mid-systole frame, and the largest (PISAmax) was determined. Geometric investigations of the left ventricle and mitral valve were performed.The distal length from the anterior leaflet angulation on the central plane was significantly longer in the 29 patients (56%) with eccentric PISA than in the 23 patients with central PISA (1.73 (0.44) vs 1.47 (0.33) cm, p0.05). The 18 patients (35%) with both-sides dominant PISA had a smaller anterior leaflet bending angle (141 degrees (8 degrees ) vs 147 degrees (8 degrees ), p0.05) and a longer distal length from the angulation on the central plane (1.80 (0.36) vs 1.51 (0.41) cm, p0.05) than the remaining 34 patients. The 14 patients (27%) with separate PISAs had smaller PISAmax (0.33 (0.13) vs 0.45 (0.16) cm, p0.05), and tenting height (0.91 (0.20) vs 1.06 (0.24) cm, p0.05) and tenting area (2.1 (0.6) vs 2.7 (0.8) cm(2), p0.05) on the central plane than in those with single PISA.3D features of FMR are quite diverse. The shape and site of anterior leaflet bending determine the shape of the regurgitant orifice, and small mitral valve tenting generates separate small regurgitant orifices of FMR in patients with severe left ventricular dysfunction.
- Subjects :
- Male
medicine.medical_specialty
Duplex ultrasonography
Echocardiography, Three-Dimensional
Severity of Illness Index
Ventricular Dysfunction, Left
symbols.namesake
Internal medicine
Mitral valve
Image Interpretation, Computer-Assisted
medicine
Humans
In patient
Functional mitral regurgitation
Mitral regurgitation
business.industry
Mitral Valve Insufficiency
Middle Aged
Echocardiography, Doppler, Color
Treatment Outcome
medicine.anatomical_structure
Ventricle
Circulatory system
cardiovascular system
symbols
Cardiology
Female
Cardiology and Cardiovascular Medicine
business
Doppler effect
Blood Flow Velocity
Subjects
Details
- ISSN :
- 13556037
- Volume :
- 94
- Database :
- OpenAIRE
- Journal :
- Heart
- Accession number :
- edsair.doi.dedup.....8b11025d54a6b4ba5d0c67248c79511a