alexa Biomaterials As A Tool For Teaching And Learning Training Programs On Surgery
ISSN: 2155-952X

Journal of Biotechnology & Biomaterials
Open Access

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2nd Annual Conference and Expo on BIOMATERIALS
March 27-28, 2017 Madrid, Spain

Avelina Sotres Vega, Jaime Villalba Caloca and Alfredo Santibanz-Salgado
National Institute of Respiratory Diseases, Mexico
ScientificTracks Abstracts: J Biotechnol Biomater
DOI: 10.4172/2155-952X.C1.073
Abstract
Statement of the Problem: Developing surgical skills is essential in the training of all surgical specialties. However ethical, legal and economic issues have limited surgical training. As surgical educators, we are always trying to identify new ways to provide skills training. We have developed training programs to teach surgical skills to junior surgeons from human and veterinary medicine based on laboratory animals using preserved tissues and organs as surgical training biomaterials. The goal is to help the trainees acquire the abilities and dexterity necessary to perform surgery on patients. Methodology: We created a small bank of cryopreserved tracheas and stomachs harvested from Wistar rats as well as cryopreserved tracheas and lyophilized esophagus that were harvested from dogs. All animals were previously used in research studies. Stomachs, tracheas and esophagus were cleansed with saline solution, after this, tracheas and esophagus were mounted on polypropylene tubes. In the stomachs, the pyloric antrum was tied with silk 1-0, stomachs were filled with hyaluronic acid solution and the distal esophagus was tied too. Tracheas and esophagus were trimmed in segments of 5 cm. Cryopreservation of tracheas and stomachs was made with a controlled-rate freezer (-1ºC/min) and stored at -30ºC for 30 to 60 days. All the esophagus were lyophilized at -55ºC and 10 mBar of vacuum pressure during 24 hours and sterilized with low temperature hydrogen peroxide gas plasma process. On the day of the surgical skills practice, the cryopreserved organs were thawed at room temperature and all the esophagus were rehydrated with saline solution at 4ºC. Each preserved organ was used to perform end-to-end anastomosis with 4-0 running polypropilene or single stitches. Preserved organs are inexpensive, practical, portable bench models and have high-fidelity that improve the tactile perception and facilitate surgical skills learning by improving how trainees handle tissue and surgical instruments.
Biography

Avelina Sotres Vega has her expertise in teaching and learning programs on surgery using preserved biomaterials either by cryopreservation or lyophilization as well as cryopreserved tracheal grafts in experimental models of long segment replacement mainly.

Email: [email protected]

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