scholarly journals A Novel Surgical Technique As a Foundation for In Vivo Partial Liver Engineering in Rat

10.3791/57991 ◽  
2018 ◽  
Author(s):  
An Wang ◽  
Isabel Jank ◽  
Weiwei Wei ◽  
Claudia Schindler ◽  
Uta Dahmen
Keyword(s):  
Surgical Technique ◽  
Liver Engineering

New surgical technique reduces the susceptibility artefact at air–tissue interfaces on in vivo cerebral MRI in the Göttingen minipig

2009 ◽  
Vol 80 (6) ◽  
pp. 403-407 ◽  
Author(s):  
Frederikke Rosendal ◽  
Jesper Frandsen ◽  
M. Mallar Chakravarty ◽  
Carsten Reidies Bjarkam ◽  
Michael Pedersen ◽  
...  
Keyword(s):  
Surgical Technique ◽  
Göttingen Minipig ◽  
Cerebral Mri ◽  
Susceptibility Artefact ◽  
New Surgical Technique ◽  
Tissue Interfaces

scholarly journals EVALUATION OF A TRAINING COURSE ON OPEN VASCULAR SURGICAL TECHNIQUES IN AORTOILIAC PATHOLOGY - 5 YEARS OF EXPERIENCE

2015 ◽  
Vol 88 (2) ◽  
pp. 196-202
Author(s):  
Bogdan Stancu ◽  
Florin Beteg ◽  
Aurel Mironiuc ◽  
Aurel Muste ◽  
Claudia Gherman
Keyword(s):  
Surgical Technique ◽  
Vascular Surgery ◽  
Prospective Study ◽  
Surgical Techniques ◽  
Surgical Skills ◽  
Technical Quality ◽  
Statistical Association ◽  
Abdominal Aortic

Introduction. The aim of this prospective study was to assess the efficacy of a vascular surgery course (2008-2012), and to verify the viability and the feasibility of the vascular anastomoses.Material and method. Vascular surgical techniques performed simultaneously on pigs were: enlargement prosthetic angioplasty, abdominal aortic interposition graft and aortoiliac bypass. Endpoints of the study were the surgical skills and the technical quality, evaluated on a scale ranging from 1 (satisfactory) to 3 (very good) for our participants.Result. A significant improvement in vascular surgical skills tasks was observed during the study years and we also found a semnificative statistical association between the quality of suture and the surgical technique used (Kendall coefficient=0.71, p=0.001<0.05).Conclusions. Our course contributed to the improvement of technical vascular surgical skills of the operator teams, reproducing in vivo, in pigs, the intraoperative environment as in human patients.

The Next Step in In-Vivo Liver Engineering: Generation of an In vivo Liver Lobe Scaffold Which is Structurally Intact and Physiologically Reperfusable

2019 ◽  
Author(s):  
An Wang ◽  
Olha Kuriata ◽  
Sandor Nietzsche ◽  
Felix Gremse ◽  
Utz Settmacher ◽  
...  
Keyword(s):  
Liver Lobe ◽  
Liver Engineering

scholarly journals Surgical Technique for the Implantation of Tissue Engineered Vascular Grafts and Subsequent In Vivo Monitoring

10.3791/52354 ◽  
2015 ◽  
Author(s):  
Maxwell T. Koobatian ◽  
Carmon Koenigsknecht ◽  
Sindhu Row ◽  
Stelios Andreadis ◽  
Daniel Swartz
Keyword(s):  
Surgical Technique ◽  
Vascular Grafts

Analysis In Vivo of the Hemifacial Transplantation Surgical Technique

2019 ◽  
Vol 30 (3) ◽  
pp. 944-946
Author(s):  
Ithalo Queiroz Rodrigues ◽  
Caroline Cunico ◽  
Alfredo Benjamim Duarte da Silva ◽  
Juliana Sperotto Brum ◽  
Rogério Ribeiro Robes ◽  
...  
Keyword(s):  
Surgical Technique

scholarly journals Pitfalls and problems encountered in rat model sciatic nerve surgery

2019 ◽  
pp. 396-399
Author(s):  
Marin Andrei ◽  
Mihai Ruxandra Ioana ◽  
Marin Georgiana Gabriela
Keyword(s):  
Sciatic Nerve ◽  
Surgical Technique ◽  
Peripheral Nerve ◽  
Nerve Regeneration ◽  
Experimental Model ◽  
Rat Model ◽  
Peripheral Nerve Injury ◽  
Living Tissue ◽  
Nerve Surgery

When learning the basics of microsurgery, a trainee must be equipped with patience and perseverance in order to evolve. One must have the ground knowledge when it comes to peripheral nerve injury and nerve regeneration process in order to fully understand that the technique is vital for the outcome and final results. Furthermore, a trainee must practice on non-living tissue before performing successful in vivo operations and even in this case, one may be confronted with problems regarding the surgical technique. [1] The following article aims to reveal the main problems/mistakes when performing sciatic nerve surgery in an in vivo experimental model and the solutions for these problems.

New surgical technique for studying placental transfer of drugs in vivo

1970 ◽  
Vol 10 (1) ◽  
pp. 7-11 ◽  
Author(s):  
C.H. Almond ◽  
B.M. Boulos ◽  
L.E. Davis ◽  
J.W. Mackenzie
Keyword(s):  
Surgical Technique ◽  
Placental Transfer ◽  
New Surgical Technique

Use of a New Expanded Polytetrafluoroethylene Multichordal Mitral Apparatus (Mitrapatch) to Repair Complex Mitral Valve Lesions

2017 ◽  
Vol 12 (6) ◽  
pp. 411-417
Author(s):  
Surendra K. Chawla ◽  
Muralidhar Padala ◽  
W. Randolph Chitwood ◽  
Robert W.M. Frater
Keyword(s):  
Mitral Valve ◽  
Surgical Technique ◽  
Ex Vivo ◽  
High Volume ◽  
In Vivo Studies ◽  
Expanded Polytetrafluoroethylene ◽  
Mitral Repair ◽  
Mitral Prolapse ◽  
Mitral Apparatus

Objective We report a new expanded polytetrafluoroethylene multichordal mitral apparatus (MitraPatch) to simplify mitral repairs involving multiple cusps and sought to describe the surgical technique and demonstrate the efficacy of the device. Methods MitraPatch was laser cut from a single sheet of expanded polytetrafluoroethylene and mounted on a custom-designed handle. Surgical technique to deploy the apparatus on the native mitral valve was developed in ex vivo porcine hearts. Hemodynamic efficacy of repairing mitral prolapse and regurgitation was assessed in ex vivo hearts and in five 30-day chronic swine, with histopathology in an additional swine at 120 days after implantation. Results In ex vivo heart studies, leaflet coaptation was restored from 0 mm at the posterior prolapsing segment to 8.1 ± 2.2 mm after repair with the MitraPatch ( P < 0.05) and to 10.2 ± 1.3 mm after the repair of the anterior leaflet ( P < 0.05). In in vivo studies, valve function at 30 days was considered good, with none to trace regurgitation. Device was flexible, without tissue overgrowth or dehiscence. At 120 days, complete endothelialization was observed. Conclusions The multichordal MitraPatch can potentially simplify complex mitral valve repairs involving multiple leaflet cusps, possibly enabling an optimal mitral repair even by surgeons without the focused high-volume experience.

scholarly journals Accuracy of dental implants inserted in clinical studies using static implantation guides: a systematic review and a meta-analysis

2020 ◽  
Author(s):  
Algimantas Gaubys ◽  
Dovydas Sakalys ◽  
Martynas Mantas Krukis ◽  
Gintaras Janužis
Keyword(s):  
Surgical Technique ◽  
Clinical Studies ◽  
Meta Analysis ◽  
Analysis Data ◽  
Positive Influence ◽  
Mean Deviation ◽  
Surgical Guide ◽  
Dental Implantation ◽  
Meta Analyses

Abstract Background One of the main tasks of dental implantation is the precise insertion of the implant into the edentulous jaw. The purpose of a study was to determine the accuracy of implants inserted using static implantation guides in different conditions.Methods A search for clinical studies was performed in the PubMed databasis. The implantation procedure had to be performed on humans in vivo by using a static surgical guide. Pre and postsurgical CT scans were compared to evaluate the deviation of implants. A meta-analyses was performed to calculate the mean implant collar, apex, depth and axis deviations. A meta-regression analyses was performed by grouping study subgroups according to the method of surgery, implant insertion, jaw, guide support tissue, and the method of guide fixation.Results 19 studies were included in the meta-analysis. Data on 1872 implants were analyzed. Mean deviation was 1.25 mm (95% CI: 1.00, 1.51) at the implant entry point and 1.52 mm (95% CI: 1.18, 1.86) at the apex. Mean axis deviation was 3.47o (95% CI: 3.01, 3.94). Depth deviation was 0.15 mm (95% CI: -0.36, 0.66). The following factors had a positive influence on the implant precision: open surgical technique, fully guided implant insertion and fixation of the surgical guide.Conclusions The surgical technique, implant insertion method, jaw, guide supporting tissue and fixation has an effect on the deviation of inserted implants.

scholarly journals AUDIOVISUAL RESOURCES ON THE TEACHING PROCESS IN SURGICAL TECHNIQUE

2015 ◽  
Vol 28 (4) ◽  
pp. 234-238 ◽  
Author(s):  
Guilherme Luiz Lenzi PUPULIM ◽  
Rafael Augusto IORIS ◽  
Ricardo Ribeiro GAMA ◽  
Carmen Australia Paredes Marcondes RIBAS ◽  
Osvaldo MALAFAIA ◽  
...  
Keyword(s):  
Surgical Technique ◽  
Conventional Method ◽  
Teaching Method ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Experimental Laboratory ◽  
Technical Details ◽  
Operation Results ◽  
Self Administered Questionnaire

Background: The development of didactic means to create opportunities to permit complete and repetitive viewing of surgical procedures is of great importance nowadays due to the increasing difficulty of doing in vivo training. Thus, audiovisual resources favor the maximization of living resources used in education, and minimize problems arising only with verbalism. Aim: To evaluate the use of digital video as a pedagogical strategy in surgical technique teaching in medical education. Methods: Cross-sectional study with 48 students of the third year of medicine, when studying in the surgical technique discipline. They were divided into two groups with 12 in pairs, both subject to the conventional method of teaching, and one of them also exposed to alternative method (video) showing the technical details. All students did phlebotomy in the experimental laboratory, with evaluation and assistance of the teacher/monitor while running. Finally, they answered a self-administered questionnaire related to teaching method when performing the operation. Results: Most of those who did not watch the video took longer time to execute the procedure, did more questions and needed more faculty assistance. The total exposed to video followed the chronology of implementation and approved the new method; 95.83% felt able to repeat the procedure by themselves, and 62.5% of those students that only had the conventional method reported having regular capacity of technique assimilation. In both groups mentioned having regular difficulty, but those who have not seen the video had more difficulty in performing the technique. Conclusion: The traditional method of teaching associated with the video favored the ability to understand and transmitted safety, particularly because it is activity that requires technical skill. The technique with video visualization motivated and arouse interest, facilitated the understanding and memorization of the steps for procedure implementation, benefiting the students performance.

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