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Jedrzejczyk JH, Krog S, Skov SN, Poulsen KB, Sharghbin M, Benhassen LL, Nielsen SL, Hasenkam JM, Tjørnild MJ. Entire Mitral Valve Reconstruction Using Porcine Extracellular Matrix: Adding a Ring Annuloplasty. Cardiovasc Eng Technol 2024:10.1007/s13239-024-00727-0. [PMID: 38504076 DOI: 10.1007/s13239-024-00727-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Accepted: 03/10/2024] [Indexed: 03/21/2024]
Abstract
PURPOSE This study investigated the implications of inserting a flexible annuloplasty ring after reconstructing the entire mitral valve in a porcine model using a previously investigated tube graft design made of 2-ply small intestinal submucosa extracellular matrix (CorMatrix®). METHODS An acute model with eight 80-kg pigs, each acting as its own control, was used. The entire mitral valve was reconstructed with a 2-ply small intestinal submucosa extracellular matrix tube graft (CorMatrix®). Subsequently, a Simulus® flexible ring was inserted. The characterization was based on mitral annular geometry and valvular dynamics with sonomicrometry and echocardiography. RESULTS After adding the ring annuloplasty, the in-plane annular dynamics were more constant throughout the cardiac cycle compared to the reconstruction alone. However, the commissure-commissure distance was statistically significantly decreased [35.0 ± 3.4 mm vs. 27.4 ± 1.9 mm, P < 0.001, diff = - 7.6 mm, 95% CI, - 9.8 to (-5.4) mm] after ring insertion, changing the physiological annular D-shape into a circular shape which created folds at the coaptation zone resulting in a central regurgitant jet on color Doppler. CONCLUSION We successfully reconstructed the entire mitral valve using 2-ply small intestinal submucosal extracellular matrix (CorMatrix®) combined with a flexible annuloplasty. The annuloplasty reduced the unphysiological systolic widening previously found with this reconstructive technique. However, the Simulus flex ring changed the physiological annular D-shape into a circular shape and hindered a correct unfolding of the leaflets. Thus, we do not recommend a flexible ring in conjunction with this reconstructive technique; further investigations are needed to discover a more suitable remodelling annuloplasty.
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Affiliation(s)
- Johannes H Jedrzejczyk
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Århus, Denmark.
- Department of Clinical Medicine, Aarhus University Hospital, Århus, Denmark.
| | - Stine Krog
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Århus, Denmark
- Department of Clinical Medicine, Aarhus University Hospital, Århus, Denmark
| | - Søren N Skov
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Århus, Denmark
- Department of Clinical Medicine, Aarhus University Hospital, Århus, Denmark
| | - Karen B Poulsen
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Århus, Denmark
- Department of Clinical Medicine, Aarhus University Hospital, Århus, Denmark
| | - Mona Sharghbin
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Århus, Denmark
- Department of Clinical Medicine, Aarhus University Hospital, Århus, Denmark
| | - Leila L Benhassen
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Århus, Denmark
- Department of Clinical Medicine, Aarhus University Hospital, Århus, Denmark
| | - Sten L Nielsen
- Department of Clinical Medicine, Aarhus University Hospital, Århus, Denmark
| | - J Michael Hasenkam
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Århus, Denmark
- Department of Clinical Medicine, Aarhus University Hospital, Århus, Denmark
- Department of Surgery, University of the Witwatersrand, Johannesburg, South Africa
| | - Marcell J Tjørnild
- Department of Cardiothoracic and Vascular Surgery, Aarhus University Hospital, Palle Juul-Jensens Boulevard 99, 8200, Århus, Denmark
- Department of Clinical Medicine, Aarhus University Hospital, Århus, Denmark
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Tjørnild MJ, Carlson Hanse L, Skov SN, Poulsen KB, Sharghbin M, Benhassen LL, Waziri F, Røpcke DM, Nielsen SL, Hasenkam JM. Entire mitral reconstruction with porcine extracellular matrix in an acute porcine model. J Thorac Cardiovasc Surg 2020; 160:102-112. [DOI: 10.1016/j.jtcvs.2019.07.085] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/01/2019] [Revised: 06/03/2019] [Accepted: 07/04/2019] [Indexed: 01/20/2023]
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