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K. Hirasawa, M. Izumo, K. Suzuki, T. Harada, M. Isobe, Y. Akashi, 5751
Tricuspid valve geometry in patients with Barlow type mitral valve prolapse: a three-dimensional transesophageal echocardiography study, European Heart Journal, Volume 38, Issue suppl_1, August 2017, ehx493.5751, https://doi.org/10.1093/eurheartj/ehx493.5751Close - Share Icon Share
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Background: Barlow disease (BD) was characterized by leaflet billowing, multi-segmental prolapse, and severe myxomatous degeneration of the mitral valve (MV). However, the geometrical characteristics of tricuspid valve (TV) morphology in BD were unclear. We hypothesized BD patients have leaflet billowing and prolapse of the TV similar to the MV.
Purpose: The aim of this study was to clarify the difference of TV morphology between BD and fibroelastic deficiency (FED) patients with mitral valve prolapse (MVP) by using three-dimensional (3D) transesophageal echocardiography (TEE).
Methods and results: Eighty-eight patients with MVP who underwent 3D TEE were classified into two groups according to MV morphology; BD (n=37) and FED (n=51). The 3D images of TV were analyzed using quantification software. No significant differences were observed in ejection fraction, left ventricular diameters, and the grade of mitral regurgitation. In BD patients, MV annulus area, MV prolapse height and MV prolapse volume were larger than those of FED patients (12.2±2.7 vs 9.5±1.8 cm2, 7.7±2.6 vs 4.7±2.3 mm, and 2.3±0.9 vs 0.5±0.3 cm3, respectively, all P<0.01). Similar to MV, larger TV annulus area, TV prolapse height and TV prolapse volume were also observed in BD as compared with FED (10.8±2.9 vs 9.2±2.4 cm2, 4.6±1.6 vs 2.3±1.1 mm, and 1.3±0.8 vs 0.3±0.3 cm3, respectively, all P<0.01). In contrast, TV tenting height and tenting volume was smaller in BD compared with FED (2.6±1.5 vs 4.4±2.4 mm and 0.3±0.4 vs 0.9±1.0 cm3, respectively, both P<0.01).
