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Renal artery reconstruction

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https://www.readbyqxmd.com/read/27888303/dual-energy-ct-workflow-multi-institutional-consensus-on-standardization-of-abdominopelvic-mdct-protocols
#1
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
#2
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...
November 17, 2016: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/27862938/combined-percutaneous-trans-renal-and-trans-femoral-endovascular-recanalization-and-angioplastic-reconstruction-of-a-disrupted-transplant-renal-artery-stent-a-novel-salvage-technique
#3
Dustin J Carpenter, Sumit Mohan, Lloyd E Ratner, Peter Schlossberg
Renal artery stenosis (RAS) is the most common vascular complication following renal transplantation. Percutaneous endovascular transluminal angioplasty with stenting is the treatment of choice for clinically significant RAS. We present a case describing a novel combined trans-renal parenchyma and trans-femoral approach to repairing a disrupted transplant renal artery stent. Our patient's allograft RAS was initially managed by 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
#4
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
#5
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
#6
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
#7
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
#8
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
#9
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
https://www.readbyqxmd.com/read/27742898/initial-experience-with-covered-endovascular-reconstruction-of-the-aortic-bifurcation-in-conjunction-with-chimney-grafts
#10
Martijn L Dijkstra, Peter C J M Goverde, Andrew Holden, Clark J Zeebregts, Michel M P J Reijnen
PURPOSE: To show feasibility of the covered endovascular repair of the aortic bifurcation (CERAB) technique in conjunction with chimney grafts in aortic side branches for complex aortoiliac occlusive disease. METHODS: Two European centers and one facility located in New Zealand participated in a retrospective observational study that enrolled 14 consecutive patients (mean age 61.2±8.9 years; 11 men) treated with CERAB in conjunction with chimney graft(s) between December 2012 and May 2015...
October 14, 2016: Journal of Endovascular Therapy
https://www.readbyqxmd.com/read/27687328/reconstruction-for-renal-artery-aneurysms-using-the-tailoring-technique
#11
Mansur Duran, Daniel Ferdinand Hausmann, Klaus Grabitz, Hubert Schelzig, Florian Simon, Tolga Atilla Sagban
OBJECTIVE: Renal artery (RA) aneurysm (RAA) is a rare and complex disease. Treatment options for a RAA include endovascular surgery and open surgery with ex vivo repair or in situ reconstruction. This study evaluated the long-term outcome after vascular reconstruction of RAAs using the tailoring technique. Tailoring or aneurysmorrhaphy means a partial resection of the aneurysm with direct suture of the remaining arterial wall. METHODS: A single-center retrospective study was conducted between January 1990 and December 2015...
September 26, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27684548/levosimendan-administration-in-limb-ischemia-multicomponent-signaling-serving-kidney-protection
#12
Peter Onody, Peter Aranyi, Zsolt Turoczi, Rita Stangl, Andras Fulop, Emese Dudas, Gabor Lotz, Attila Szijarto
AIMS AND OBJECTIVES: Acute renal failure is a severe complication of lower extremity major arterial reconstructions, which could even be fatal. Levosimendan is a dual-acting positive inotropic and vasodilatory agent, which is suspected to have protective effects against cardiac ischemia. However, there is no data available on lower limb or remote organ ischemic injuries therefore the aim of the study was to investigate the effect of levosimendan on lower limb ischemia-reperfusion injury and the corollary renal dysfunction...
2016: PloS One
https://www.readbyqxmd.com/read/27673541/a-new-approach-for-reconstruction-of-diabetic-foot-wounds-using-the-angiosome-and-supermicrosurgery-concept
#13
Hyun Suk Suh, Tae Suk Oh, Ho Seung Lee, Seung Hwan Lee, Yong Pil Cho, Joong Ryul Park, Joon Pio Hong
BACKGROUND: Major vessels in the diabetic foot are often calcified and inadequate for use as recipient vessels. Thus, a supermicrosurgery technique using small branches or perforators from other collateral vessels with an adequate pulse may be an alternative method. This study evaluated outcome using the supermicrosurgery concept and the risk factors involved. METHODS: Ninety-five cases of diabetic foot reconstruction were reviewed; the average patient age was 57 years; average follow-up was 43...
October 2016: Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/27671450/repair-of-chronic-aneurysmal-aortic-dissection-using-a-stent-graft-and-an-amplatzer%C3%A2-vascular-plug-a-case-study
#14
Yuji Kanaoka, Takao Ohki, Hirotsugu Ozawa
We report a case in which a stent graft and an Amplatzer® vascular plug (AVP) were effective for the treatment of chronic aneurysmal aortic dissection. The patient was a 52-year-old man. At 45 years of age, he developed acute aortic dissection, for which he underwent surgery four times with prosthetic graft replacement in the abdominal aorta, descending thoracic, ascending aorta (without neck branch reconstruction), and thoracoabdominal aorta with the reconstruction of the celiac, superior mesenteric and bilateral renal arteries...
September 23, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27577511/adrenal-and-nephrogenic-hypertension-an-image-quality-study-of-low-tube-voltage-low-concentration-contrast-media-combined-with-adaptive-statistical-iterative-reconstruction
#15
Zhen Li, Qiong Li, Yaqi Shen, Anqin Li, Haojie Li, Lili Liang, Yao Hu, Xuemei Hu, Daoyu Hu
PURPOSE: The aim of this study was to investigate the effect of using low tube voltage, low-concentration contrast media and adaptive statistical iterative reconstruction (ASIR) for reducing the radiation and iodine contrast doses in adrenal and nephrogenic hypertension patients. METHODS AND MATERIALS: A total of 148 hypertension patients who were suspected for adrenal lesions or renal artery stenoses were assigned to two groups and. Group A (n=74) underwent a low tube voltage, low molecular weight dextran enhanced multi-detector row spiral CT (MDCT) (80 kVp, 270 mg I/mL contrast agent), and the raw data were reconstructed with standard filtered back projection (FBP) and ASIR at four different levels of blending (20%, 40%, 60% and 80%, respectively)...
September 2016: International Journal of Clinical Practice
https://www.readbyqxmd.com/read/27560016/computed-tomographic-angiography-of-the-abdomen-and-pelvis-in-azotemic-patients-utilizing-80-kv-p-technique-and-reduced-dose-iodinated-contrast-comparison-with-routine-120-kv-p-technique
#16
David Knipp, Barton F Lane, Jason W Mitchell, Barry D Daly
OBJECTIVE: To evaluate image quality (IQ) of a reduced contrast volume, low kilovolt (peak) [kV(p)] abdominopelvic computed tomographic angiography (AP-CTA) protocol compared to a standard 120-kV(p) AP-CTA protocol. METHODS: A retrospective image analysis was performed on 103 patients with end-stage renal disease who underwent AP-CTA. Forty-nine patients were scanned at 80 kV(p) with a mean of 48 mL of contrast, and 54 patients were scanned at 120 kV(p) with a mean of 98 mL of contrast...
August 25, 2016: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/27505010/renal-autotransplantation-at-three-academic-institutions-in-turkey
#17
Yarkin Kamil Yakupoglu, Fazil Tuncay Aki, Yakup Kordan, Ender Ozden, Senol Tonyali, Yakup Bostanci, Hakan Vuruskan, Cenk Yucel Bilen, Saban Sarikaya
OBJECTIVE: The objective of this study is to present the experience of 3 institutions performing renal autotransplantation (RAT) and to discuss surgical techniques employed and the results in the light of the medical literature. MATERIALS AND METHODS: A total of 14 patients (11 male and 3 female) with a mean age of 47 ± 8 years (35-61 years), who underwent RAT procedure at 3 different institutions between October 2006 and November 2014, in Turkey, were evaluated retrospectively...
2016: Urologia Internationalis
https://www.readbyqxmd.com/read/27462000/contemporary-comparison-of-aortofemoral-bypass-to-alternative-inflow-procedures-in-the-veteran-population
#18
James T McPhee, Arin Madenci, Joseph Raffetto, Michelle Martin, Naren Gupta
OBJECTIVE: Multiple vascular inflow reconstruction options exist for claudication, including aortofemoral bypass (AFB) and alternative inflow procedures (AIPs) such as femoral reconstruction with iliac stents, and femoral-femoral, iliofemoral, and axillofemoral bypass. Contemporary multi-institution comparison of these techniques is lacking. METHODS: The Veterans Affairs Surgical Quality Improvement Project (VASQIP) national database (2005-2013) was used to compare AFB vs AIP in a propensity-matched analysis...
July 22, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27444361/surgical-treatment-of-abdominal-aortic-aneurysms-in-infancy-and-early-childhood
#19
Jonathan L Eliason, Dawn M Coleman, Enrique Criado, James C Stanley
OBJECTIVE: Pediatric abdominal aortic aneurysms (AAAs) are rare. The intent of this report was to review the presentation and surgical management of AAAs in infancy and early childhood. METHODS: The clinical courses of young children undergoing AAA surgery were subjected to a retrospective review and analysis. RESULTS: Eleven children, nine boys and two girls, ranging in age from 2 weeks to 6 years, underwent surgical treatment of AAA at the University of Michigan from 2002 to 2014...
July 18, 2016: Journal of Vascular Surgery
https://www.readbyqxmd.com/read/27410757/-different-techniques-of-vessel-reconstruction-in-kidney-transplantation-10-years-experiences
#20
P Závacký, Ľ Beňa, M Zavacká, M Frankovičová
INTRODUCTION: The aim of the study was to analyze own results from Transplant Center Kosice, Slovak Republic. METHODS: In total 457 patients in the end-stage renal failure were included to the kidney transplant program. Following techniques were used: arterioplasty, individual renal artery anastomosis and multiple renal arteries anastomosed on a common patch. The kidney transplant (Tx) especially requires surgical technique of a vascular anastomosis. RESULTS: Renal transplantation has been established in Transplant Center Kosice since 1988...
2016: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
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