Biomechanical engineering analysis of commonly utilized mitral neochordaeCentral MessagePerspective

Mateo Marin-Cuartas, MD; Annabel M. Imbrie-Moore, MS, PhD; Yuanjia Zhu, MD, MS; Matthew H. Park, MS; Robert Wilkerson, BS; Matthew Leipzig, BS; Michael A. Borger, MD, PhD; Y. Joseph Woo, MD

JTCVS Open (Dec 2021)

Biomechanical engineering analysis of commonly utilized mitral neochordaeCentral MessagePerspective

Mateo Marin-Cuartas, MD,
Annabel M. Imbrie-Moore, MS, PhD,
Yuanjia Zhu, MD, MS,
Matthew H. Park, MS,
Robert Wilkerson, BS,
Matthew Leipzig, BS,
Michael A. Borger, MD, PhD,
Y. Joseph Woo, MD

Affiliations

Mateo Marin-Cuartas, MD: Department of Cardiothoracic Surgery, Stanford University, Stanford, Calif; University Department of Cardiac Surgery, Leipzig Heart Center, Leipzig, Germany
Annabel M. Imbrie-Moore, MS, PhD: Department of Cardiothoracic Surgery, Stanford University, Stanford, Calif; Department of Mechanical Engineering, Stanford University, Stanford, Calif
Yuanjia Zhu, MD, MS: Department of Cardiothoracic Surgery, Stanford University, Stanford, Calif; Department of Bioengineering, Stanford University, Stanford, Calif
Matthew H. Park, MS: Department of Cardiothoracic Surgery, Stanford University, Stanford, Calif; Department of Mechanical Engineering, Stanford University, Stanford, Calif
Robert Wilkerson, BS: Department of Cardiothoracic Surgery, Stanford University, Stanford, Calif
Matthew Leipzig, BS: Department of Cardiothoracic Surgery, Stanford University, Stanford, Calif
Michael A. Borger, MD, PhD: University Department of Cardiac Surgery, Leipzig Heart Center, Leipzig, Germany
Y. Joseph Woo, MD: Department of Cardiothoracic Surgery, Stanford University, Stanford, Calif; Department of Bioengineering, Stanford University, Stanford, Calif; Address for reprints: Y. Joseph Woo, MD, Department of Cardiothoracic Surgery, Stanford University School of Medicine, Falk Cardiovascular Research Center, 300 Pasteur Dr, Stanford, CA 94305.

Journal volume & issue: Vol. 8
pp. 263 – 275

Abstract

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Objective: To evaluate the suture rupture forces of commonly clinically utilized neochord repair techniques to identify the most biomechanically resistant most biomechanically resistant technique. Methods: Several types of neochord techniques (standard interrupted neochordae, continuous running neochordae, and loop technique), numbers of neochordae, and suture calibers (polytetrafluoroethylene CV-3 to CV-6) were compared. To perform the tests, both ends of the neochordae were loaded in a tensile force analysis machine. During the test, the machine applied tension to the neochord until rupture was achieved. The tests were performed 3 times for each variation, and the rupture forces were averaged for statistical analysis. Results: Rupture force was significantly higher for running neochordae relative to interrupted neochordae (P 2 independent sets of multiple running neochordae in each set).

Published in JTCVS Open

ISSN: 2666-2736 (Online)
Publisher: Elsevier
Country of publisher: United States
LCC subjects: Medicine: Internal medicine: Specialties of internal medicine: Diseases of the circulatory (Cardiovascular) system; Medicine: Surgery
Website: https://www.journals.elsevier.com/jtcvs-open

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