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Renal artery reconstruction

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https://www.readbyqxmd.com/read/28214485/outcome-of-peripheral-venous-reconstructions-during-tumor-resection
#1
Philip Y Sun, Mark D Fleming, Kendall Stauffer, Manju Kalra, Gustavo Oderich, Thomas Bower, Peter Gloviczki, Randall R DeMartino
OBJECTIVE: Peripheral venous reconstruction surgery may be necessary for appropriate oncologic resection; however, the operative approach and surgical outcomes are not well described. We report our experience with these complex reconstructions to identify best practice. METHODS: We retrospectively reviewed all adult patients who underwent peripheral vein reconstruction for tumor resection at Mayo Clinic, Rochester (2000-2015). Patients were classified into three subgroups by the location: iliac (IL), lower extremity (LE), and upper extremity (UE)...
March 2017: Journal of Vascular Surgery. Venous and Lymphatic Disorders
https://www.readbyqxmd.com/read/28191012/application-of-modified-small-bladder-patch-to-bladder-double-layer-sutures-to-improve-renal-transplantation-in-mice
#2
Chen Wenwei, Yang Yirong, Katarzyna M Stevens, Michal Heger, Xia Peng
BACKGROUND: This study aimed to introduce an improved surgical procedure to reduce the incidence of urinary tract complications after renal transplantation in mice using a modified bladder patch-to-bladder anastomosis technique. METHODS: Renal isotransplantation was performed in 28 male C57BL/6 mice. The urinary tract was reconstructed with a ureteral anastomosis between the donor's small bladder patch and the recipient's bladder. The bladder patch was secured through a cystotomy in the recipient's bladder mucosa and seromuscular layers, which were sutured in a double-layer manner...
2017: European Surgery: ACA: Acta Chirurgica Austriaca
https://www.readbyqxmd.com/read/28176396/multiresolution-imaging-using-golden-angle-stack-of-stars-and-compressed-sensing-for-dynamic-mr-urography
#3
Abhishek Pandey, Umit Yoruk, Mahesh Keerthivasan, Jean-Philippe Galons, Puneet Sharma, Kevin Johnson, Diego R Martin, Maria I Altbach, Ali Bilgin, Manojkumar Saranathan
PURPOSE: To develop a novel multiresolution MRI methodology for accurate estimation of glomerular filtration rate (GFR) in vivo. MATERIALS AND METHODS: A three-dimensional golden-angle radial stack-of-stars (SoS) trajectory was used for data acquisition on a 3 Tesla MRI scanner. Multiresolution reconstruction and analysis was performed using arterial input function reconstructed at 1-s. temporal resolution and renal dynamic data reconstructed using compressed sensing (CS) with 4-s temporal resolution...
February 8, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28161484/twenty-year-experience-with-aorto-enteric-fistula-repair-gastrointestinal-complications-predict-mortality
#4
Atish Chopra, Lucyna Cieciura, J Gregory Modrall, R James Valentine, Jayer Chung
BACKGROUND: Aorto-enteric fistulae (AEF) represent a lethal subset of aortic graft infections. The optimal management of AEF remains unclear. We aimed to identify predictors of morbidity and mortality. STUDY DESIGN: We performed a single-center retrospective review of consecutive AEF repairs. Demographics, co-morbidities, and peri-operative variables were obtained. Descriptive statistics, Chi-squared, Kruskall-Wallis, and Cox proportional-hazards modeling were utilized where appropriate...
February 1, 2017: Journal of the American College of Surgeons
https://www.readbyqxmd.com/read/28152259/four-dimensional-phase-contrast-vastly-undersampled-isotropic-projection-reconstruction-4d-pc-vipr-mr-evaluation-of-the-renal-arteries-in-transplant-recipients-preliminary-results
#5
Daisuke Motoyama, Yasuo Ishii, Yasuo Takehara, Masataka Sugiyama, Wang Yang, Hatsuko Nasu, Takasuke Ushio, Yuko Hirose, Naoki Ohishi, Tetsuya Wakayama, Hiroyuki Kabasawa, Kevin Johnson, Oliver Wieben, Harumi Sakahara, Seiichiro Ozono
PURPOSE: To assess the performance of four-dimensional phase-contrast vastly undersampled isotropic projection reconstruction (4D PC-VIPR) at 3.0T in depicting intrarenal arteries compared with computed tomography angiography (CTA), and its correlation with arterial flowmetry in comparison with Doppler ultrasonography (DUS). MATERIALS AND METHODS: In our prospective single-arm study, subjects were 25 patients who underwent renal transplant-related surgery at our hospital between July 2011 and June 2015...
February 2, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28141679/abdominal-arterial-anomalies-in-children-with-alagille-syndrome-surgical-aspects-and-outcomes-of-liver-transplantation
#6
Jules Kohaut, Romain Pommier, Florent Guerin, Danièle Pariente, Emmanuel Jacquemin, Hélène Martelli, Sophie Branchereau
OBJECTIVES: Angiogenic defects secondary to gene mutations of JAG1 and NOTCH2, causing arterial anomalies in Alagille syndrome (AGS), are well described in the literature. The study analyzes the frequency of abdominal arterial anomalies in children with AGS with an emphasis on outcomes following liver transplantation (LT). METHODS: Between 1988 and 2013, 242 children with AGS were treated at our institution. We performed a retrospective analysis of 55 who underwent LT during the study period...
January 28, 2017: Journal of Pediatric Gastroenterology and Nutrition
https://www.readbyqxmd.com/read/28057275/anatomic-suitability-for-transcaval-access%C3%A2-based-on-computed-tomography
#7
REVIEW
Robert J Lederman, Adam B Greenbaum, Toby Rogers, Jaffar M Khan, Melissa Fusari, Marcus Y Chen
Transcaval access has been used successfully for over 200 transcatheter aortic valve replacements, large-bore percutaneous left ventricular assist devices, and thoracic endovascular aortic aneurysm repairs. This review teaches how to plan transcaval access and closure based on computed tomography. The main planning goals are to: 1) identify calcium-free crossing targets in the abdominal aorta along with optimal fluoroscopic projection angles and level with respect to lumbar vertebrae; 2) identify obstacles such as interposed bowel or pedunculated aortic atheroma; 3) plan covered stent bailout; and 4) identify jeopardized vascular branches such as renal arteries that might be obstructed by bailout covered stents if employed...
January 9, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28051019/hemodynamics-in-transplant-renal-artery-stenosis-and-its-alteration-after-stent-implantation-based-on-a-patient-specific-computational-fluid-dynamics-model
#8
Hong-Yang Wang, Long-Shan Liu, Hai-Ming Cao, Jun Li, Rong-Hai Deng, Qian Fu, Huan-Xi Zhang, Ji-Guang Fei, Chang-Xi Wang
BACKGROUND: Accumulating studies on computational fluid dynamics (CFD) support the involvement of hemodynamic factors in artery stenosis. Based on a patient-specific CFD model, the present study aimed to investigate the hemodynamic characteristics of transplant renal artery stenosis (TRAS) and its alteration after stent treatment. METHODS: Computed tomography angiography (CTA) data of kidney transplant recipients in a single transplant center from April 2013 to November 2014 were reviewed...
2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28043466/increasing-complexity-of-heart-transplantation-in-patients-with-congenital-heart-disease
#9
William Y Shi, Pankaj Saxena, Matthew S Yong, Silvana F Marasco, David C McGiffin, Anne Shipp, Robert G Weintraub, Yves d'Udekem, Christian P Brizard, Igor E Konstantinov
Owing to improved surgical results, there is a growing population of patients with repaired congenital heart disease (CHD) requiring heart transplantation. The objective of the study was to review our experience in these patients. A retrospective review of the outcomes of heart transplantation in patients with CHD (n = 77) between 1988 and 2014 was performed. Outcomes of early (1988-1999) and late (2000-2014) eras were compared. In results, the mean age was 18 ± 14 years (range: 16 days-58 years). Seventy (91%) patients underwent a mean of 2...
July 2016: Seminars in Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/27988157/successful-microscopic-renal-autotransplantation-for-left-renal-aneurysm-associated-with-segmental-arterial-mediolysis
#10
Takashi Yoshioka, Motoo Araki, Yuichi Ariyoshi, Koichiro Wada, Noriyuki Tanaka, Yasutomo Nasu
Segmental arterial mediolysis (SAM) is an uncommon, nonarteriosclerotic vascular disease. SAM is characterized by lysis of arterial media and can lead to aneurysm formation. The renal arteries are the third most common arteries associated with SAM. We report the case of a 32-year-old man with left renal artery aneurysm associated with SAM. We successfully performed left renal autotransplantation using microscopic vascular reconstruction. SAM is characterized by vascular fragility; therefore, microscopic surgery is favorable for treating aneurysms associated with SAM...
December 14, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27928064/3d-printing-guiding-stent-graft-fenestration-a-novel-technique-for-fenestration-in-endovascular-aneurysm-repair
#11
Jianhua Huang, Gan Li, Wei Wang, Keming Wu, Tianming Le
OBJECTIVE: To describe a novel approach, 3D printing guiding stent graft fenestration, for fenestration during endovascular aneurysm repair for juxtarenal abdominal aortic aneurysm. METHODS: A 69-year-old male with juxtarenal abdominal aortic aneurysm underwent endovascular aneurysm repair with "off the label" fenestrated stent graft. To precisely locate the fenestration position, we reconstructed a 3D digital abdominal aortic aneurysm model and created a skin template covering this abdominal aortic aneurysm model...
December 6, 2016: Vascular
https://www.readbyqxmd.com/read/27888303/dual-energy-ct-workflow-multi-institutional-consensus-on-standardization-of-abdominopelvic-mdct-protocols
#12
Bhavik N Patel, Lauren Alexander, Brian Allen, Lincoln Berland, Amir Borhani, Achille Mileto, Courtney Moreno, Desiree Morgan, Dushyant Sahani, William Shuman, Eric Tamm, Mitchell Tublin, Benjamin Yeh, Daniele Marin
PURPOSE: To standardize workflow for dual-energy computed tomography (DECT) involving common abdominopelvic exam protocols. MATERIALS AND METHODS: 9 institutions (4 rsDECT, 1 dsDECT, 4 both) with 32 participants [average # years (range) in practice and DECT experience, 12.3 (1-35) and 4.6 (1-14), respectively] filled out a single survey (n = 9). A five-point agreement scale (0, 1, 2, 3, 4-contra-, not, mildly, moderately, strongly indicated, respectively) and utilization scale (0-not performing and shouldn't; 1-performing but not clinically useful; 2-performing but not sure if clinically useful; 3-not performing it but would like to; 4-performing and clinically useful) were used...
November 25, 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27864460/use-of-the-octopus-endograft-technique-to-reconstruct-renovisceral-arteries-arising-from-the-false-lumen-of-a-rapidly-expanding-type-b-aortic-dissection-after-endovascular-repair
#13
Jiang Xiong, Yangyang Ge, Xiaoping Liu, Lijun Wang, Wei Guo
PURPOSE: To describe the use and 6-month outcomes of the octopus endograft technique to reconstruct renovisceral arteries arising from the false lumen (FL) of a type B aortic dissection after thoracic endovascular aortic repair (TEVAR). CASE REPORT: A 46-year-old man post TEVAR for type B aortic dissection was admitted with persistent back pain and a rapidly expanding residual dissection. The celiac and left renal arteries arose from the FL and the superior mesenteric artery from both lumens, with the FL as its main supply...
February 2017: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/27862938/combined-percutaneous-transrenal-and-transfemoral-endovascular-recanalization-and-angioplastic-reconstruction-of-a-disrupted-transplant-renal-artery-stent-a-novel-salvage-technique
#14
D J Carpenter, S Mohan, L E Ratner, P Schlossberg
Renal artery stenosis is the most common vascular complication following renal transplantation. Percutaneous endovascular transluminal angioplasty with stenting is the treatment of choice for clinically significant renal artery stenosis. The authors present a case describing a novel combined transrenal parenchyma and transfemoral approach to repairing a disrupted transplant renal artery stent. The patient's allograft renal artery stenosis was initially managed via the standard percutaneous approach, but during follow-up the stent became disrupted and crushed, causing partial occlusion of the renal artery...
November 14, 2016: American Journal of Transplantation
https://www.readbyqxmd.com/read/27861397/application-of-physician-modified-fenestrated-stent-graft-in-urgent-endovascular-repair-of-abdominal-aortic-aneurysm-with-hostile-neck-anatomy-case-report
#15
Rong Zeng, Wei Ye, Changwei Liu, Xuan Wang, Xiaojun Song, Leng Ni, Bao Liu, Yongjun Li, Yuehong Zheng
BACKGROUND: This study aimed to evaluate the feasibility and effectiveness of the Gore Excluder aortic stent graft (WL Gore & Associates, Inc., Flagstaff, AZ) using the C3 Delivery System after physician modification of fenestration for the urgent treatment of patients with abdominal aortic aneurysm showing hostile neck anatomy. CASE SUMMARY: Three urgent cases of abdominal aortic aneurysm with hostile neck anatomy symptom with abdominal pain were reported. The same fenestration method was applied to align the target superior mesenteric artery and bilateral renal arteries with 1 scallop and 2 fenestrations, followed by the reconstruction of the target artery using a bare-metal stent or stent graft...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27827846/age-related-renal-microvascular-changes-evaluation-by-three-dimensional-digital-imaging-of-the-human-renal-microcirculation-using-virtual-microscopy
#16
Noriko Uesugi, Yoshihito Shimazu, Kazunori Kikuchi, Michio Nagata
The renal microvasculature is targeted during aging, sometimes producing chronic kidney disease (CKD). Overdiagnosis of CKD in older persons is concerning. To prevent it, a new concept of "healthy aging" is arising from a healthy renal donor study. We investigated the renal microcirculatory changes of three older persons and compared them with that of one patient with nephrosclerosis using a three-dimensional (3D) reconstruction technique that we previously developed. This method uses a virtual slide system and paraffin-embedded serial sections of surgical material that was double-immunostained by anti-CD34 and anti-α smooth muscle actin (SMA) antibodies for detecting endothelial cells and medial smooth muscle cells, respectively...
November 2, 2016: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/27803955/open-repair-of-aaa-in-a-high-volume-center
#17
Lazar B Davidovic, Milanko Maksic, Igor Koncar, Nikola Ilic, Marko Dragas, Nikola Fatic, Miroslav Markovic, Igor Banzic, Perica Mutavdzic
OBJECTIVE: To assess results of open repair (OR) of AAA in a single high volume center. METHODS: We analyzed prospectively collected data of 450 patients who underwent elective OR of AAA at the Clinic for Vascular and Endovascular Surgery of the Serbian Clinical Centre in the period between January 2013 and September 2014. RESULTS: Postoperative death occurred in seven patients (1. 55%) during the first 30 postoperative days. The mortality was caused by: uncontrolled bleeding-1, acute myocardial infarction-1, ischemic colitis-2, MOFS-2, sepsis due to infection and dehiscence of laparotomy wound-1...
November 1, 2016: World Journal of Surgery
https://www.readbyqxmd.com/read/27782315/minimally-circulatory-assisted-on-pump-beating-coronary-artery-bypass-grafting-for-patients-with-complex-conditions-for-off-pump-surgery
#18
Tomohiro Mizuno, Koso Egi, Kenji Sakai, Keiji Oi, Tsuyoshi Hachimaru, Tohru Makita, Kiyotoshi Oishi, Hirokuni Arai
Off-pump coronary artery bypass grafting (OPCAB) in patients with acute myocardial infarction (AMI) is difficult because of circulatory deterioration during displacement of the heart. At our institution, we performed minimally circulatory-assisted on-pump beating coronary artery bypass grafting (MICAB) in these patients. During MICAB, support flow was controlled at a minimal level to maintain a systemic blood pressure of approximately 100 mm Hg and a pulmonary arterial systolic pressure of <30 mm Hg, providing optimal pulsatile circulation for end-organ perfusion and prevention of heart congestion...
October 26, 2016: Artificial Organs
https://www.readbyqxmd.com/read/27759632/preoperative-evaluation-of-renal-artery-in-patients-with-renal-tumor-using-noncontrast-enhanced-magnetic-resonance-angiography
#19
Liangsong Zhu, Guangyu Wu, Jianfeng Wang, Jiwei Huang, Wen Kong, Yonghui Chen, Wei Xue, Yiran Huang, Jin Zhang
To investigate the feasibility of the noncontrast-enhanced magnetic resonance angiography (NCE-MRA) to evaluate renal arteries before partial nephrectomy (PN).Retrospective analyzed 479 patients who underwent renal surgery between January 2013 and December 2015 with NCE-MRA or computed tomographic angiography (CTA) renal artery image reconstruction preoperative in our department. The renal artery reconstruction score (RARS) was based on the level of artery visualization in a 4-class criterion, and the R.E.N...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27754474/zero-ischaemia-partial-nephrectomy-a-call-for-standardized-nomenclature-and-functional-outcomes
#20
Ahmad Alenezi, Giacomo Novara, Alexander Mottrie, Salah Al-Buheissi, Omer Karim
Nephron-sparing surgery for the removal of small renal masses delivers equivalent oncological outcomes and better functional outcomes compared with those associated with radical nephrectomy. All contemporary partial nephrectomy techniques including open, laparoscopic and robotic approaches involve the use of hilar clamping in order to facilitate haemostasis, and to enable accurate tumour excision and parenchymal reconstruction. Zero ischaemia was subsequently introduced as a technique to eliminate the renal ischaemia induced by hilar clamping...
October 18, 2016: Nature Reviews. Urology
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