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Vein harvesting

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https://www.readbyqxmd.com/read/28098961/angiogenic-and-osteogenic-regeneration-in-rats-via-calcium-phosphate-scaffold-and-endothelial-cell-coculture-with-hbmscs-hucmscs-hipsc-mscs-and-hesc-mscs
#1
Wenchuan Chen, Xian Liu, Qianmin Chen, Chongyun Bao, Liang Zhao, Zhimin Zhu, Hockin H K Xu
Angiogenesis is a limiting factor in regenerating large bone defects. The objective of this study was to investigate angiogenic and osteogenic effects of coculture on calcium phosphate cement (CPC) scaffold using human umbilical vein endothelial cells (hUVECs) and mesenchymal stem cells (MSCs) from different origins for the first time. hUVECs were cocultured with four types of cells: human umbilical cord MSCs (hUCMSCs), human bone marrow MSCs (hBMSCs), and MSCs from induced pluripotent stem cells (hiPSC-MSCs) and embryonic stem cells (hESC-MSCs)...
January 18, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28092273/in-vivo-testing-of-extracorporeal-membrane-ventilators-ila-activve%C3%A2-vs-prototype-i-lung%C3%A2
#2
Sabine Kischkel, Stefan Bergt, Beate Brock, Johan von Grönheim, Anne Herbst, Marc-Jonas Epping, Georg Matheis, Esther Novosel, Joerg Schneider, Philipp Warnke, Andreas Podbielski, Jan P Roesner, Peter I Lelkes, Brigitte Vollmar
A side-by-side comparison of the decarboxylation efficacy of two pump-driven veno-venous extracorporeal lung assist devices, i.e. a first prototype of the new miniaturized ambulatory extracorporeal membrane ventilator, I-lung® versus the commercial system iLA-activve® over a period of 72 hours in a large animal model.Fifteen German Landrace pigs were anesthetized and underwent mechanical hypoventilation to induce severe hypercapnia. Decarboxylation was accomplished by either the I-lung® or the iLA-activve® via a double lumen catheter in the jugular vein...
January 4, 2017: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/28076625/endoscopic-or-no-touch-vein-harvesting-for-cabg-what-is-best-for-the-patient
#3
Tomislav Kopjar, Stjepan Ivankovic, Melchior Luiz Lima, Bruno Botelho Pinheiro, Michael Richard Dashwood
No abstract text is available yet for this article.
November 2016: Brazilian Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28063277/straightforward-method-for-coverage-of-major-vessels-after-modified-radical-neck-dissection
#4
Raúl González-García, Carlos Moreno-García, Manuel Moreno-Sánchez, Leticia Román-Romero
A new method for covering the internal jugular vein and carotid artery after exposure of the cervical vascular axis subsequent to neck dissection is presented. To cover the most caudal part of the vascular axis, a platysma coli muscle flap is harvested from its most medial and inferior part of the neck in a caudally based fashion and is slightly rotated posteriorly up to 45°. In addition, a superiorly based sternocleidomastoid muscle flap involving the posterior half of the muscle after detachment of the clavicle head is harvested and rotated 45° anteriorly to cover the upper two thirds of the vascular axis...
December 15, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28032566/rabbit-model-provides-new-insights-in-liver-regeneration-after-transection-with-portal-vein-ligation
#5
Mingheng Liao, Tao Zhang, Haichuan Wang, Ying Liu, Minxun Lu, Jiwei Huang, Yong Zeng
BACKGROUND: The rabbit model of associating liver partition and portal vein ligation for staged hepatectomy (ALPPS) has not been reported before. MATERIALS AND METHODS: New Zealand white rabbits were allocated to two protocols. Protocol 1 involved either liver parenchymal transection (LPT, n = 5) or portal vein ligation (PVL, n = 5). Protocol 2 involved the ligation of different portal vein branches combined with liver partition, including the LPT + 20% PVL group (n = 5; the caudate portal vein was ligated), the LPT + 50% PVL group (n = 5; the left portal vein was ligated), and the LPT + 70% PVL group (n = 10; both veins were ligated)...
November 2, 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/28027615/living-donor-liver-transplantation-using-an-extended-right-lateral-sector-graft
#6
N Yoshida, T Takamoto, T Hashimoto, Y Maruyama, H Abe, K Shimada, T Takayama, M Makuuchi
There are three grafts (left, right and right lateral sector [RLS]) available for adult living donor liver transplantation (LDLT), and we herein report LDLT performed using an extended RLS graft. An extended RLS graft is an RLS plus right paramedian dorsal sector (RPMS-dorsal) graft. In this case, the proportion of the RLS graft of the predicted graft volume (GV) to the recipient's standard liver volume (SLV) was only 17.7%, preoperatively. A three-dimensional (3D) analysis, showed that the RPMS-dorsal branches of the portal veins branched from the posterior trunk not the anterior trunk...
December 27, 2016: Liver Transplantation
https://www.readbyqxmd.com/read/28025309/safety-and-efficacy-of-prophylactic-negative-pressure-wound-therapy-following-open-saphenous-vein-harvest-in-cardiac-surgery-a-feasibility-study
#7
Arthur J Lee, Christina E Sheppard, William D T Kent, Holly Mewhort, Khokan C Sikdar, Paul W M Fedak
OBJECTIVES: Surgical site complications following great saphenous vein (GSV) harvest presents a significant risk of morbidity. Negative pressure wound therapy (NPWT) has shown promise in the treatment and prophylaxis of open wounds and surgical incisions but has not been studied following GSV harvest. We performed a feasibility study examining the use of NPWT following GSV harvest for coronary bypass surgery. METHODS: Sixty-four patients were recruited in this single-centre, single-blind, randomized controlled trial...
December 26, 2016: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28004436/vein-graft-disease-in-a-knockout-mouse-model-of-hyperhomocysteinaemia
#8
Christina Maria Steger, Tobias Mayr, Nikolaos Bonaros, Johannes Bonatti, Thomas Schachner
A major reason for vein graft failure after coronary artery bypass grafting is neointimal hyperplasia and thrombosis. Elevated serum levels of homocysteine (Hcy) are associated with higher incidence of cardiovascular disease, but homocysteine levels also tend to increase during the first weeks or months after cardiac surgery. To investigate this further, C57BL/6J mice (WT) and cystathionine-beta-synthase heterozygous knockout mice (CBS+/-), a mouse model for hyperhomocysteinaemia, underwent interposition of the vena cava of donor mice into the carotid artery of recipient mice...
December 22, 2016: International Journal of Experimental Pathology
https://www.readbyqxmd.com/read/27991695/application-of-extended-bi-pedicle-anterolateral-thigh-free-flaps-for-reconstruction-of-large-defects-a-case-series
#9
Michele Maruccia, Georgios Orfaniotis, Pedro Ciudad, Fabio Nicoli, Emanuele Cigna, Giuseppe Giudice, Kidakorn Kiranantawat, Diego Ribuffo, Hung-Chi Chen
BACKGROUND: The anterolateral thigh flap is a workforce flap in reconstructive surgery, however, variations in it is vascular anatomy are not uncommon. These variations may affect flap design and survival, especially when large flaps are required. In some anatomical variants the anterolateral thigh flap is supplied by two separate dominant pedicles, and in these cases a bi-pedicle modification may be necessary to ensure complete flap viability. The aim of this report is to evaluate the outcomes, and present our approach in using bi-pedicle anterolateral thigh flaps as a method to reduce the risk of partial flap necrosis when reconstructing sizeable soft tissue defects...
December 19, 2016: Microsurgery
https://www.readbyqxmd.com/read/27982334/modified-technique-for-preparation-of-venous-circulation-resin-casts-in-the-cirrhotic-liver
#10
José Olímpio Maia DE Vasconcelos, Laécio Leitão Batista, Guilherme Benjamin Brandão Pitta, Cláudio Moura Lacerda
This study describes two major adaptations for the preparation of resin casts in human cirrhotic liver, harvested at the time of transplantation. The first is the way of fixing the catheter in the ostia of the hepatic and portal veins through a cerclage, so as to prevent displacement of the catheter and / or leakage of the resin during its injection. The second is the extension of corrosion time in the NaOH solution, averaging 6.8 days, with daily replacement the solution until complete removal of parenchymal tissue...
September 2016: Revista do Colégio Brasileiro de Cirurgiões
https://www.readbyqxmd.com/read/27916241/no-touch-saphenous-vein-harvesting-may-improve-further-the-patency-of-saphenous-vein-composite-grafts-early-outcomes-and-1-year-angiographic-results
#11
Yong Han Kim, Hong Chul Oh, Jae Woong Choi, Ho Young Hwang, Ki-Bong Kim
BACKGROUND: Harvesting technique and surgical strategy may affect patency rates of saphenous vein (SV) grafts in coronary artery bypass graft surgery (CABG). We evaluated early clinical outcomes and 1-year graft patency rates of SV grafts that were harvested with a no-touch technique and used as composite grafts. METHODS: Three hundred sixty-eight patients who underwent off-pump CABG using SV composite grafts based on the left internal thoracic artery were studied...
December 1, 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27909273/-minimally-invasive-coronary-artery-bypass-grafting-using-bilateral-in-situ-internal-thoracic-arteries
#12
Akihiko Yamauchi, Masaki Tabuchi, Shinya Terada, Keita Kikuchi
A 73-year-old male with diabetes mellitius was referred to our hospital for coronary artery bypass grafting (CABG). Preoperative coronary angiography revealed three-vessel coronary disease. Minimally invasive coronary artery grafting (MICS CABG) via left thoracotomy was selected to decrease surgical site infection due to severe diabetes. In situ bilateral internal thoracic arteries (BITA) were harvested using a long type Harmonic scalpel. In situ right internal thorac artery( RITA)-left anterior descending artery (LAD), in situ left internal thorac artery( LITA)-high lateral branch (HL), and aorta-saphenous vein graft (SVG)-#4 posterior descending artery were performed...
December 2016: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/27884396/effects-of-visfatin-on-the-apoptosis-of-intestinal-mucosal-cells-in-immunological-stressed-rats
#13
Ying Zhou, Huai-Rui Yuan, Lu Cui, Abdur Rahman Ansari, Ke Xiao, You Luo, Xin-Tong Wu, Liang Guo, Faheem Ahmed Khan, Zhi Yang, Hui Song
This study was undertaken to determine if visfatin is involved in the inflammation or apoptosis introduced by LPS in rats. Forty 8-week old Wistar rats were divided into four groups (n=10 in each group) and injected with saline, visfatin, LPS and visfatin+LPS co-stimulated via caudal vein. The duodenum, jejunum and ileum were harvested from all the rats. Compared to the saline treated group, visfatin significantly increased the number of TUNEL-positive apoptotic cells and the expression of caspase-3 protein in intestinal mucosa...
January 2017: Acta Histochemica
https://www.readbyqxmd.com/read/27879599/total-human-eye-allotransplantation-developing-surgical-protocols-for-donor-and-recipient-procedures
#14
Edward H Davidson, Eric W Wang, Jenny Y Yu, Juan C Fernandez-Miranda, Dawn J Wang, Nikisha Richards, Maxine Miller, Joel S Schuman, Kia M Washington
BACKGROUND: Vascularized composite allotransplantation of the eye is an appealing, novel method for reconstruction of the nonfunctioning eye. The authors' group has established the first orthotopic model for eye transplantation in the rat. With advancements in immunomodulation strategies together with new therapies in neuroregeneration, parallel development of human surgical protocols is vital for ensuring momentum toward eye transplantation in actual patients. METHODS: Cadaveric donor tissue harvest (n = 8) was performed with orbital exenteration, combined open craniotomy, and endonasal approach to ligate the ophthalmic artery with a cuff of paraclival internal carotid artery, for transection of the optic nerve at the optic chiasm and transection of cranial nerves III to VI and the superior ophthalmic vein at the cavernous sinus...
December 2016: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27879158/potential-of-lysophosphatidylinositol-as-a-prognostic-indicator-of-cardiac-arrest-using-a-rat-model
#15
Junhwan Kim, Tai Yin, Koichiro Shinozaki, Joshua W Lampe, Lance B Becker
AIMS: The potential of a lysophosphatidylinositol species, LPI(18:0), as a biomarker of ischaemia was tested using a rat model of cardiac arrest (CA). METHODS: Male Sprague-Dawley rats were subjected to asphyxia-induced CA or CA followed by cardiopulmonary bypass (CPB) resuscitation. The brain, heart, kidney and liver tissues were harvested from rats after 0, 5, 10, 20, 30 and 60 min CA and 30 min CA followed by 60 min CPB resuscitation. Blood samples were collected from inferior vena cava and hepatic veins following 30 min CA...
December 8, 2016: Biomarkers: Biochemical Indicators of Exposure, Response, and Susceptibility to Chemicals
https://www.readbyqxmd.com/read/27876350/a-solution-to-the-vessel-shortage-during-free-vascularized-fibular-grafting-for-reconstructing-infected-bone-defects-of-the-femur-bridging-with-vein-transplantation
#16
Ren Gao-Hong, Li Run-Guang, Jiang Gui-Yong, Chen Chao-Jie, Bao Zhi-Gang
PURPOSE: The present study aimed to evaluate the feasibility and clinical efficacy of bridging vein transplantation to deal with the vessel shortage during free vascularized fibular grafting for reconstructing infected bone defects of the femur. METHODS: Twelve patients (aged 15-58 years) with infected bone defects of the femur (between 6.0 and 18.0cm) were recruited in this study. Vacuum sealing drainage were applied after extensive debridement of the infected bone defects and irrigated with 0...
October 22, 2016: Injury
https://www.readbyqxmd.com/read/27848980/influence-of-leaf-vein-density-and-thickness-on-hydraulic-conductance-and-photosynthesis-in-rice-oryza-sativa-l-during-water-stress
#17
Muhammad Adnan Tabassum, Guanglong Zhu, Abdul Hafeez, Muhammad Atif Wahid, Muhammad Shaban, Yong Li
The leaf venation architecture is an ideal, highly structured and efficient irrigation system in plant leaves. Leaf vein density (LVD) and vein thickness are the two major properties of this system. Leaf laminae carry out photosynthesis to harvest the maximum biological yield. It is still unknown whether the LVD and/or leaf vein thickness determines the plant hydraulic conductance (Kplant) and leaf photosynthetic rate (A). To investigate this topic, the current study was conducted with two varieties under three PEG-induced water deficit stress (PEG-IWDS) levels...
November 16, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27845962/anatomical-study-of-cutaneous-venous-flow-of-the-palm
#18
Baek-Kyu Kim, Heeyeon Kwon, Nobuaki Imanishi, Hak Chang
BACKGROUNDS: Various flaps elevated from the palm have been widely used for finger and hand reconstruction. Recently, perforator-based free flaps or venous free flaps have received popularity due to several advantages. The cutaneous venous system has been chosen as the circulatory outlet when designing and harvesting the flap from the palmer area due to the small size and thin nature of the flap. However, there have been few descriptions about the anatomy of the palmar cutaneous veins...
November 15, 2016: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/27832865/ghrelin-improves-intestinal-mucosal-atrophy-during-parenteral-nutrition-an-experimental-study
#19
Waka Yamada, Tatsuru Kaji, Shun Onishi, Kazuhiko Nakame, Koji Yamada, Takafumi Kawano, Motoi Mukai, Masakazu Souda, Takako Yoshioka, Akihide Tanimoto, Satoshi Ieiri
BACKGROUND/PURPOSE: Total parenteral nutrition (TPN) has been reported to be associated with mucosal atrophy of the small intestine. Ghrelin has hormonal, orexigenic, and metabolic activities. We investigated whether ghrelin improved intestinal mucosal atrophy using a TPN-supported rat model. METHODS: Rats underwent jugular vein catheterization and were divided into four groups: TPN alone (TPN), TPN plus low-dose ghrelin (TPNLG), TPN plus high-dose ghrelin (TPNHG), and oral feeding with normal chow (OF)...
December 2016: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/27823597/frequency-of-deep-vein-thrombosis-and-or-pulmonary-embolism-after-coronary-artery-bypass-grafting-investigation-regardless-of-clinical-suspicion
#20
Vitor B Viana, Emanoel R Melo, Mario Terra-Filho, Luis A Dallan, Maria M Gonzalez, Ludhmila A Hajjar, Fabio B Jatene, Luiz A Cesar, Caio B Vianna
Venous thromboembolism (VTE) includes deep vein thrombosis (DVT) and/or pulmonary embolism (PE). Many surgeons and clinicians believe that VTE after coronary artery bypass grafting (CABG) has little clinical significance because it is seldom diagnosed. This study aimed to identify VTE after CABG, independent of clinical suspicion. In this prospective, observational, single-center study, 100 patients underwent computed tomographic pulmonary angiography (multidetector-64) and lower extremity venous compressive ultrasound after elective CABG...
January 15, 2017: American Journal of Cardiology
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