Document Detail

A case report of valve dysfunction associated with abrasion of the Delrin disk used in early Björk-Shiley mitral valves requiring resurgery.
MedLine Citation:
PMID:  19471217     Owner:  NLM     Status:  MEDLINE    
A 39-year-old woman had undergone mitral valve replacement (MVR) (29-mm Björk-Shiley Delrin disk) at 6 years of age. Severe mitral regurgitation, aortic regurgitation, and left ventricular dilatation were detected by echocardiography in October 2006, and MVR (ON-X 25 mm) and aortic valve replacements (St. Jude Medical Regent, 21 mm) were performed in December. The Delrin disk of the previous prosthetic valve, located at the position of the mitral valve, was markedly abraded, broadening the clearance from the valve seat. The postoperative course was smooth without complications, and the patient was discharged, walking by herself, on day 19 after surgery. A Delrin disk was used for the tilting valve in early Björk-Shiley valves, but has been replaced by pyrolytic carbon because of problems with durability of the Delrin material. Follow-ups of patients who have undergone procedures using Delrin disks ares necessary, with consideration of valve replacement.
Hidetoshi Masumoto; Mitsuomi Shimamoto; Fumio Yamazaki; Masanao Nakai; Shoji Fujita; Yujiro Miura; Tatsuya Itonaga; Hiroki Ito
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Publication Detail:
Type:  Case Reports; Journal Article    
Journal Detail:
Title:  Annals of thoracic and cardiovascular surgery : official journal of the Association of Thoracic and Cardiovascular Surgeons of Asia     Volume:  15     ISSN:  2186-1005     ISO Abbreviation:  Ann Thorac Cardiovasc Surg     Publication Date:  2009 Apr 
Date Detail:
Created Date:  2009-05-27     Completed Date:  2009-08-25     Revised Date:  2012-06-18    
Medline Journal Info:
Nlm Unique ID:  9703158     Medline TA:  Ann Thorac Cardiovasc Surg     Country:  Japan    
Other Details:
Languages:  eng     Pagination:  126-8     Citation Subset:  IM    
Department of Cardiovascular Surgery, Shizuoka City Hospital, Shizuoka, Japan.
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MeSH Terms
Aortic Valve Insufficiency / diagnosis,  etiology*,  surgery
Device Removal
Heart Valve Prosthesis*
Heart Valve Prosthesis Implantation* / adverse effects,  instrumentation
Mitral Valve Insufficiency / diagnosis,  etiology*,  surgery*
Prosthesis Design
Prosthesis Failure*
Resins, Synthetic*
Treatment Outcome
Reg. No./Substance:
0/Resins, Synthetic; 9085-38-5/delrin

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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