Universität zu Köln

Safi, Ali-Farid, Safi, Sema, Tayeh, Mahmoud, Gojowy, David, Timmer, Marco, Goldbrunner, Roland and Kauke, Martin (2019). Vein Graft Interposition: A Training Model Using Gradually Thawed Cryopreserved Vessels. J. Craniofac. Surg., 30 (3). S. E213 - 5. PHILADELPHIA: LIPPINCOTT WILLIAMS & WILKINS. ISSN 1536-3732

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Abstract

Introduction: Microsurgical interposition of vein grafts is an extraordinarily filigree surgical technique, which requires both sound theoretical knowledge and solid manual skills. Although there are a large number of training models, the majority of these are either relatively expensive, technically complex, or employ synthetic materials with poor resemblance to human tissue. The authors' model allows training of ex vivo vein graft interposition on gradually thawed cryopreserved vessels and it, therefore, is cost-efficient and readily available when needed. Furthermore, it respects the 3R-principle (Reduce-Refine-Replace), as it is based on rat cadaveric vessels. Methods: Three trainees with basic microsurgical experience, but without prior performance of vein graft interpositioning, were chosen to perform 20 femoral vein graft (5mm) interpositions into femoral arterydefects. The patency and leakagerate served as qualitative variable and operation time as a quantitative variable for efficiency control. Results: For the first half of trials, the trainees had a patency failure rate of 50% and for the second half a rate of 13.3%. The leakage rate noticeably decreased from 44.4% in the first half of trials to 10% in the second half. Although the trainees needed 60 minutes on average for their first 10 trials, they improved to 51 minutes for their last 10 anastomoses. Conclusion: The authors' microsurgical model offers a simple, low-cost simulation training, specifically designed for learning of vein graft interposition into arterial defects. The model is associated with a high learning curve, based on an objective control of the anastomoses by assessment of the patency, leakage, and operation time.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Safi, Ali-Farid UNSPECIFIED UNSPECIFIED UNSPECIFIED Safi, Sema UNSPECIFIED UNSPECIFIED UNSPECIFIED Tayeh, Mahmoud UNSPECIFIED UNSPECIFIED UNSPECIFIED Gojowy, David UNSPECIFIED UNSPECIFIED UNSPECIFIED Timmer, Marco UNSPECIFIED UNSPECIFIED UNSPECIFIED Goldbrunner, Roland UNSPECIFIED UNSPECIFIED UNSPECIFIED Kauke, Martin UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-149509
DOI:	10.1097/SCS.0000000000005197
Journal or Publication Title:	J. Craniofac. Surg.
Volume:	30
Number:	3
Page Range:	S. E213 - 5
Date:	2019
Publisher:	LIPPINCOTT WILLIAMS & WILKINS
Place of Publication:	PHILADELPHIA
ISSN:	1536-3732
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language IMPROVES Multiple languages Surgery Multiple languages
Refereed:	Yes
URI:	http://kups.ub.uni-koeln.de/id/eprint/14950