title: Comparison of saddle-shape flexibility and elliptical-shape stability between Cosgrove-Edwards and Memo-3D annuloplasty rings using three-dimensional analysis software.
abstract: OBJECTIVE
  To compare three-dimensional dynamics between implanted Cosgrove-Edwards and Sorin Memo-3D annuloplasty rings during the cardiac cycle.
  
  
  METHODS
  We examined 11 Cosgrove-Edwards rings and 20 Sorin Memo-3D rings after mitral plasty using real-time three-dimensional transesophageal echocardiography. We evaluated ring height, ellipticity, and geometry during one cardiac cycle. Four evenly spaced phases each selected during systole and diastole were assessed using REAL VIEW software.
  
  
  RESULTS
  The height of the Cosgrove-Edwards and Sorin Memo-3D rings was similar (2.3 ± 0.8 vs. 1.9 ± 0.9 mm, p = 0.44). The maximum difference in ring height during one cardiac cycle (change in height) was larger for the Cosgrove-Edwards than the Sorin Memo-3D rings (2.3 ± 0.8 vs. 1.5 ± 0.6 mm, p = 0.014). Ellipticity and the maximum difference in ellipticity during one cardiac cycle (change in ellipticity) were larger for Cosgrove-Edwards than Sorin Memo-3D rings (80.0 ± 9.1 vs. 72.0 ± 4.8 %, p = 0.014, respectively, and 12.0 ± 3.1 vs. 6.0 ± 1.8 %, p < 0.001).
  
  
  CONCLUSIONS
  Cosgrove-Edwards rings were more flexible, whereas Sorin Memo-3D rings maintained the elliptical shape more effectively.
authors.affiliation: Department of Cardiovascular Medicine, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan. atsuneto@nagasaki-u.ac.jp.
authors.forename: Akira
authors.initials: A
authors.lastname: Tsuneto
authors.affiliation: Department of Cardiovascular Surgery, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
authors.forename: Kiyoyuki
authors.initials: K
authors.lastname: Eishi
authors.affiliation: Department of Cardiovascular Surgery, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
authors.forename: Takashi
authors.initials: T
authors.lastname: Miura
authors.affiliation: Department of Cardiovascular Surgery, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
authors.forename: Kazuyoshi
authors.initials: K
authors.lastname: Tanigawa
authors.affiliation: Department of Cardiovascular Surgery, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
authors.forename: Seiji
authors.initials: S
authors.lastname: Matsukuma
authors.affiliation: Department of Cardiovascular Medicine, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
authors.forename: Takako
authors.initials: T
authors.lastname: Minami
authors.affiliation: Department of Cardiovascular Medicine, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
authors.forename: Yuji
authors.initials: Y
authors.lastname: Koide
authors.affiliation: Department of Cardiovascular Medicine, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
authors.forename: Satoshi
authors.initials: S
authors.lastname: Ikeda
authors.affiliation: Department of Cardiovascular Medicine, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Kawano
authors.affiliation: Department of Cardiovascular Medicine, Nagasaki University Hospital, 1-7-1 Sakamoto, Nagasaki, 852-8501, Japan.
authors.forename: Koji
authors.initials: K
authors.lastname: Maemura
mesh_terms: D000368:Aged; D003971:Diastole / Q000502:physiology; D017548:Echocardiography, Transesophageal; D004867:Equipment Design; D005260:Female; D006801:Humans; D008297:Male; D058386:Mitral Valve Annuloplasty / Q000295:instrumentation*; D008944:Mitral Valve Insufficiency / Q000000981:diagnostic imaging / Q000601:surgery*; D008945:Mitral Valve Prolapse / Q000000981:diagnostic imaging / Q000601:surgery*; D012984:Software; D013523:Surgical Equipment; D013599:Systole / Q000502:physiology
keywords: Cosgrove-Edwards annuloplasty ring; Memo-3D annuloplasty ring; Mitral annular dynamics; Mitral repair; Three-dimensional trans-esophageal echocardiography