Geometric Analysis of the Anterior Mitral Leaflet and Mitral Valve Orifice in Cadaveric Hearts
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概要
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Background To establish the criteria for selecting a mitral annuloplasty ring of the correct size, the dimensions of the mitral valve orifice were analyzed in cadaveric hearts. Materials and Results From December 2000 to July 2006, the mitral valve diameter [DM (Obs)] and Z-values [DM (Z); standardized value based on Rowlatt's criteria], the angles of the trigones (θTg) and commissures (θCom) and the intertrigonal distance [L (T)] were measured in 82 fresh cadaveric hearts from cases with variable causes of death (mean age 64.8±15.7 years; body surface area [BSA] 1.51±0.21m^2). DM (Obs), DM (Z) and L (T) were 2.8±0.5cm, 1.16±0.98, and 1.8±0.2cm, respectively. Theta Tg and Ocom averaged 76±13 and 121±11 degrees, respectively. There was a significant inverse linear relationship between DM (Z) and θTg [θTg=-1O×DM (Z)+88] and a significant logarithmic correlation between L (T) and BSA [L (T)=0.54×Ln (BSA)+1.55]. The anterior annular length and L (T) remained unchanged. Conclusion In non-dilated cadaveric hearts, the trigones were located at one-quarter of the mitral annulus, so the appropriate length of the posterior annuloplasty band should be adjusted to L (T)×3.33. (Circ J 2007; 71: 1794-1799)
- 社団法人日本循環器学会の論文
- 2007-10-20
著者
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Okamoto Hiroshi
Department Of Cardiovascular Medicine Hokkaido University Hospital
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ITOH Yutaka
Department of Chemistry, Graduate School of Science, Kyoto University
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Itoh Yutaka
Department Of Chemistry Graduate School Of Science Kyoto University
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NARA Yoshiharu
Department of Pathology, Yokkaichi City Hospital
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Nara Yoshiharu
Department Of Pathology Nagoya University School Of Medicine
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Itoh Yutaka
Department Of Thoracic & Cardiovascular Surgery Yokkaichi Municipal Hospital
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Okamoto Hiroshi
Department Of Advanced Materials Science Graduate School Of Frontier Sciences University Of Tokyo:cr
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Okamoto Hiroshi
Department Of Advanced Biological Sciences For Regeneration (kotobiken Medical Laboratories) Tohoku
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Okamoto Hiroshi
Department Of Thoracic & Cardiovascular Surgery Yokkaichi Municipal Hospital
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NARA Yoshiharu
Department of Pathology, Yokkaichi Municipal Hospital
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