caa a22 4500 475752171 CHVBK 20180406123527.0 cr unu---uuuuu 170329e20000601xx s 000 0 eng 10.1007/s005950070114 doi (NATIONALLICENCE)springer-10.1007/s005950070114 Recurrent incompetence of repaired floppy mitral valves and the severity of myxomatous degeneration [Elektronische Daten] [Mitsuyuki Nakayama, Chikao Yutani, Masami Imakita, Hatsue Ishibashi-Ueda, Naoki Nishida, Yoshio Kosakai, Nobuyuki Nakajima] The purpose of this study was to clarify whether or not severe myxomatous degeneration impairs the stability of a repaired mitral valve after valve-conservative surgery. A total of 21 patients who underwent successful valve-conservative surgery for pure isolated mitral incompetence were classified into two groups, one comprising those with stable mitral valve function and the other comprising those who developed recurrent incompetence within 1 year after surgery. The histological severity of myxomatous degeneration of the mitral leaflet was compared between the two groups, based upon microscopic observation and quantification of the myxomatous area in the fragment that had been surgically excised from the floppy mitral leaflet during valve-conservative surgery. The degree of myxomatous degeneration of the surgically excised fragment was significantly higher in the "recurrent” group than in the "stable” group (P 5 0.02). As a microscopically confirmed severely degenerative myxomatous mitral valve may develop recurrent incompetence after valve-conservative surgery within a relatively short period, careful and regular follow-up is required. Springer-Verlag, 2000 floppy nationallicence myxomatous nationallicence mitral valve nationallicence conservative nationallicence repair nationallicence Nakayama Mitsuyuki Department of Cardiovascular Surgery, National Cardiovascular Center, 5-7-1 Fujishirodai, 565-8565, Suita, Osaka, Japan aut Yutani Chikao Department of Pathology, National Cardiovascular Center, 5-7-1 Fujishirodai, 565-8565, Suita, Osaka, Japan aut Imakita Masami Department of Pathology, National Cardiovascular Center, 5-7-1 Fujishirodai, 565-8565, Suita, Osaka, Japan aut Ishibashi-Ueda Hatsue Department of Pathology, National Cardiovascular Center, 5-7-1 Fujishirodai, 565-8565, Suita, Osaka, Japan aut Nishida Naoki Department of Pathology, National Cardiovascular Center, 5-7-1 Fujishirodai, 565-8565, Suita, Osaka, Japan aut Kosakai Yoshio Department of Cardiovascular Surgery, National Cardiovascular Center, 5-7-1 Fujishirodai, 565-8565, Suita, Osaka, Japan aut Nakajima Nobuyuki First Department of Surgery, Chiba University School of Medicine, 1-8-1 Inohana, Chuo-ku, 260-8670, Chiba, Japan aut Surgery Today Springer-Verlag 30/6(2000-06-01), 497-502 0941-1291 30:6<497 2000 30 595 https://doi.org/10.1007/s005950070114 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s005950070114 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Nakayama Mitsuyuki Department of Cardiovascular Surgery, National Cardiovascular Center, 5-7-1 Fujishirodai, 565-8565, Suita, Osaka, Japan aut NATIONALLICENCE 700 1- Yutani Chikao Department of Pathology, National Cardiovascular Center, 5-7-1 Fujishirodai, 565-8565, Suita, Osaka, Japan aut NATIONALLICENCE 700 1- Imakita Masami Department of Pathology, National Cardiovascular Center, 5-7-1 Fujishirodai, 565-8565, Suita, Osaka, Japan aut NATIONALLICENCE 700 1- Ishibashi-Ueda Hatsue Department of Pathology, National Cardiovascular Center, 5-7-1 Fujishirodai, 565-8565, Suita, Osaka, Japan aut NATIONALLICENCE 700 1- Nishida Naoki Department of Pathology, National Cardiovascular Center, 5-7-1 Fujishirodai, 565-8565, Suita, Osaka, Japan aut NATIONALLICENCE 700 1- Kosakai Yoshio Department of Cardiovascular Surgery, National Cardiovascular Center, 5-7-1 Fujishirodai, 565-8565, Suita, Osaka, Japan aut NATIONALLICENCE 700 1- Nakajima Nobuyuki First Department of Surgery, Chiba University School of Medicine, 1-8-1 Inohana, Chuo-ku, 260-8670, Chiba, Japan aut NATIONALLICENCE 773 0- Surgery Today Springer-Verlag 30/6(2000-06-01), 497-502 0941-1291 30:6<497 2000 30 595 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer