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renal warm ischemia

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https://www.readbyqxmd.com/read/28893213/application-and-analysis-of-retroperitoneal-laparoscopic-partial-nephrectomy-with-sequential-segmental-renal-artery-clamping-for-patients-with-multiple-renal-tumor-initial-experience
#1
Jundong Zhu, Fan Jiang, Pu Li, Pengfei Shao, Chao Liang, Aiming Xu, Chenkui Miao, Chao Qin, Zengjun Wang, Changjun Yin
BACKGROUND: To explore the feasibility and safety of retroperitoneal laparoscopic partial nephrectomy with sequential segmental renal artery clamping for the patients with multiple renal tumor of who have solitary kidney or contralateral kidney insufficiency. METHODS: Nine patients who have undergone retroperitoneal laparoscopic partial nephrectomy with sequential segmental renal artery clamping between October 2010 and January 2017 were retrospectively analyzed...
September 11, 2017: BMC Urology
https://www.readbyqxmd.com/read/28889600/normothermic-ex-vivo-kidney-perfusion-for-graft-quality-assessment-prior-to-transplantation
#2
J Morit A Kaths, Mátyás Hamar, Juan Echeverri, Ivan Linares, Peter Urbanellis, Jun Yu Cen, Sujani Ganesh, Luke S Dingwell, Paul Yip, Rohan John, Darius Bagli, Istvan Mucsi, Anand Ghanekar, David Grant, Lisa A Robinson, Markus Selzner
Normothermic ex vivo kidney perfusion (NEVKP) represents a novel approach for graft preservation and functional improvement in kidney transplantation. We investigated whether NEVKP also allows graft quality assessment prior to transplantation. Kidneys from 30kg pigs were recovered in a model of heart-beating donation (HBD) (group A), following 30min of warm ischemia (WI) (group B), or 60min WI (group C) (n=5/group). Following 8hrs of NEVKP, contralateral kidneys were resected, grafts autotransplanted, and pigs followed for 3 days...
September 10, 2017: American Journal of Transplantation
https://www.readbyqxmd.com/read/28875952/role-of-r-e-n-a-l-nephrometry-score-in-laparoscopic-partial-nephrectomy
#3
Hai-Jiang Zhou, Yong Yan, Jian-Zhong Zhang, Li-Rong Liang, Shu-Bin Guo
Background: Preoperative anatomical scoring system is conducive to comparison between treatment options and evaluation of postoperative outcomes in patients with small renal tumors. This study aimed to evaluate the clinical application efficacy of the R.E.N.A.L. nephrometry score (RNS) in predicting perioperative outcomes in patients with renal tumor who underwent laparoscopic partial nephrectomy (LPN). Methods: The clinical data of 139 patients with renal tumors who underwent LPN between 2009 and 2015 were collected and analyzed...
September 20, 2017: Chinese Medical Journal
https://www.readbyqxmd.com/read/28861728/off-clamp-robot-assisted-partial-nephrectomy-does-not-benefit-short-term-renal-function-a-matched-cohort-analysis
#4
Barrett G Anderson, Aaron M Potretzke, Kefu Du, Joel Vetter, R Sherburne Figenshau
In the interest of renal functional preservation, partial nephrectomy has supplanted radical nephrectomy as the preferred treatment for T1 renal masses. This procedure usually involves the induction of renal warm ischemia by clamping the hilar vessels prior to tumor excision. Performing robot-assisted partial nephrectomy (RAPN) "off-clamp" can theoretically prevent renal functional loss associated with warm ischemia. We describe our institutional experience and compare perioperative and renal functional outcomes using a propensity score matched cohort...
August 31, 2017: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/28861703/robotic-assisted-vs-laparoscopic-donor-nephrectomy-a-retrospective-comparison-of-perioperative-course-and-postoperative-outcome-after-1-year
#5
Anthony Yang, Naman Barman, Edward Chin, Daniel Herron, Antonios Arvelakis, Dianne LaPointe Rudow, Sander S Florman, Michael A Palese
Safety is of utmost importance in live donor nephrectomies. In this study, we describe our initial experience with robot-assisted laparoscopic donor nephrectomy (RDN) in comparison with the standard laparoscopic donor nephrectomy (LDN). We retrospectively reviewed 95 patients who either underwent RDN or LDN performed by a single surgeon from 2011 to 2016 at a tertiary institution. Donor perioperative course and postoperative outcome along with recipient outcomes were compared. Of the 95 cases, 73 were classified as LDN and 22 were classified as RDN...
August 31, 2017: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/28826700/simple-tumor-enucleation-may-not-decrease-oncologic-outcomes-for-t1-renal-cell-carcinoma-a-systematic-review-and-meta-analysis
#6
De-Hong Cao, Liang-Ren Liu, Yu Fang, Ping Tang, Tao Li, YunJin Bai, Jia Wang, Qiang Wei
OBJECTIVE: To evaluate the clinical efficacy and safety of simple tumor enucleation (TE) for clinical T1 renal cell carcinoma. MATERIALS AND METHODS: A systematic search of PubMed, EMBASE, and Cochrane Central Register of Controlled Trials databases was performed to identify all trials that compared TE and traditional partial nephrectomy (PN) for patients with clinical T1 renal cell carcinoma. RESULTS: A total of 7 studies involving 3,218 patients were identified and included in this meta-analysis...
August 17, 2017: Urologic Oncology
https://www.readbyqxmd.com/read/28821949/electromagnetically-navigated-in-situ-fenestration-of-aortic-stent-grafts-pilot-animal-study-of-a-novel-fenestrated-evar-approach
#7
Tobias Penzkofer, Hong-Sik Na, Peter Isfort, Christoph Wilkmann, Sabine Osterhues, Andreas Besting, Christoph Hänisch, Stefan Bisplinghoff, Johannes Jansing, Sylvie von Werder, Jorge Gooding, Mathias de la Fuente, Andreas H Mahnken, Catherine Disselhorst-Klug, Thomas Schmitz-Rode, Christiane Kuhl, Philipp Bruners
PURPOSE: Assess electromagnetically guided in situ fenestration of juxtarenal aortic stent grafts in an in vivo model. METHODS: Using a newly developed electromagnetic guidance system together with a modified, electromagnetically guidable catheter with steerable tip, an electromagnetically trackable guidewire and a custom in situ fenestrateable stent graft, a series of seven animal experiments was performed. In a swine model, stent grafts were placed juxtarenally, covering the renal arteries...
August 18, 2017: Cardiovascular and Interventional Radiology
https://www.readbyqxmd.com/read/28819637/cigarette-smoking-and-its-hazards-in-kidney-transplantation
#8
REVIEW
Muhammad Abdul Mabood Khalil, Jackson Tan, Said Khamis, Muhammad AshhadUllah Khalil, Rabeea Azmat, Arslan Rahat Ullah
Cigarette smoking affects many organs. It causes vasoconstriction through activation of sympathetic nervous system which leads to elevation of blood pressure and reduction in glomerular filtration rate and filtration pressure. It also causes thickening of renal arterioles. Cigarette smoking increases the risk of microalbuminuria and accelerates progression of microalbuminuria to macroalbuminuria. Furthermore, it causes rapid loss of glomerular filtration rate in chronic kidney disease patients. After kidney donation, these factors may be injurious to the solitary kidney...
2017: Advances in Medicine
https://www.readbyqxmd.com/read/28816274/-retroperitoneal-laparoscopic-with-renal-pedicle-rotation-for-partial-nephrectomy-of-ventro-renal-tumor
#9
Y H Liang, X B Zu, X Cheng, L F Liu
OBJECTIVE: Retro-laparoscopic partial nephrectomy is a challenge for ventro-renal tumors, especially hilar tumors. The tumors are partial or entirely out of operative field and there is blind space for operation. To solve this problem, a set of techniques including renal pedicle rotation is developed. METHODS: A set of techniques including renal pedicle rotation, double-layer suture, early artery unclamping for retro-laparoscopic nephrectomy for ventro-renal tumors, especially hilar tumors were developed...
August 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28810824/laparoscopic-donor-nephrectomy-early-experience-at-a-single-center-in-pakistan
#10
Rehan Mohsin, Asad Shehzad, Uspal Bajracharya, Bux Ali, Tahir Aziz, Muhammed Mubarak, Altaf Hashmi, Adibul Hasan Rizvi
OBJECTIVES: Laparoscopic donor nephrectomy has become the criterion standard for kidney retrieval from living donors. There is no information on the experience and outcomes of laparoscopic donor nephrectomy in Pakistan. The objective of the study was to identify benefits and harms of using laparoscopic compared with open nephrectomy techniques for renal allograft retrieval. MATERIALS AND METHODS: In this a retrospective study, patient files from May 2014 to September 2015 were analyzed...
August 13, 2017: Experimental and Clinical Transplantation
https://www.readbyqxmd.com/read/28807212/comparison-of-normothermic-and-hypothermic-perfusion-in-porcine-kidneys-donated-after-cardiac-death
#11
Matthew F Blum, Qiang Liu, Basem Soliman, Paul Dreher, Toshihiro Okamoto, Emilio D Poggio, David A Goldfarb, William M Baldwin, Cristiano Quintini
BACKGROUND: Normothermic machine perfusion (NMP) is an alternative strategy for preserving kidneys donated after cardiac death (DCD). The relative efficacy of prolonged NMP compared to hypothermic machine perfusion (HMP) in DCD kidneys with moderate ischemic injury is undetermined. This study compares NMP and HMP kidney preservation in a porcine DCD model. METHODS: Ten porcine kidneys underwent NMP or HMP preservation following 45 minutes of warm ischemia and 5 hours of cold ischemia...
August 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28805266/hypothermic-pulsatile-preservation-of-kidneys-from-uncontrolled-deceased-donors-after-cardiac-arrest
#12
Xavier Matillon, Fabrice Danjou, Palmina Petruzzo, Olivier Thaunat, Thomas Rimmele, Claire Delsuc, Alexandre Faure, Maud Rabeyrin, Vannary Meas Yedid, William Hanf, Emmanuel Morelon, Lionel Badet, Ricardo Codas
Kidneys from uncontrolled donors after cardiac arrest (uDCD) suffer from a period of warm ischemia between cardiac arrest and cold flushing. Aim of the study was to evaluate renal outcomes of uDCD kidneys selected on the basis of renal Resistance Index (RI) and its influence on graft function and survival. The study included 44 kidneys procured from 26 uDCD starting 1.1.2006 until 31.12.2013. The donors (Maastricht category II) underwent cardiopulmonary resuscitation by assisted ventilation and chest compression; the organs were preserved with "in situ" cold perfusion or a normothermic regional perfusion...
August 14, 2017: Transplant International: Official Journal of the European Society for Organ Transplantation
https://www.readbyqxmd.com/read/28798821/benchmarking-quality-for-renal-cancer-surgery-canadian-kidney-cancer-information-system-ckcis-perspective
#13
Keith A Lawson, Olli Saarela, Zhihui Liu, Luke T Lavallée, Rodney H Breau, Lori Wood, Michael A S Jewett, Anil Kapoor, Simon Tanguay, Ronald B Moore, Ricardo Rendon, Frederic Pouliot, Peter C Black, Jun Kawakami, Darrel Drachenberg, Antonio Finelli
INTRODUCTION: There is a lack of validated quality metrics to evaluate the care of patients receiving surgery for renal cell carcinoma (RCC). To address this, the Kidney Cancer Research Network of Canada defined a list of quality indicators (QI) to assess hospital-level performance. We have case-mix adjusted these QIs to benchmark RCC surgical care at Canadian academic centres. METHODS: The Canadian Kidney Cancer information system (CKCis) was used to measure six QIs: laparoscopic approach proportion (LA), partial nephrectomy proportion (PN), partial nephrectomy in patients with chronic kidney disease (CKDPN), positive margin rate (PMR), partial nephrectomy complication rate (PNCx), and warm ischemia time (WIT)...
August 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28794065/vasa-recta-pericyte-density-is-negatively-associated-with-vascular-congestion-in-the-renal-medulla-following-ischemia-reperfusion-in-rats
#14
G Ryan Crislip, Paul M O'Connor, Qingqing Wei, Jennifer C Sullivan
Recent evidence suggests that a greater density of pericytes in renal cadaveric allografts is associated with better recovery following transplant. The physiological mechanism(s) through which pericyte density may be beneficial is not well understood. The goal of this study was to test the hypothesis that lower medullary pericyte density is associated with greater renal injury following ischemia reperfusion (IR) in a rat model, providing a basis for future studies to better understand pericytes in a pathological environment...
August 9, 2017: American Journal of Physiology. Renal Physiology
https://www.readbyqxmd.com/read/28792194/laparoscopic-partial-nephrectomy-for-tumors-7cm-and-above-perioperative-outcomes
#15
Matvey Tsivian, Efrat Tsivian, Yury Stanevsky, Roman Bass, A Ami Sidi, Alexander Tsivian
PURPOSE: To assess and report the outcomes of laparoscopic partial nephrectomy )LPN) for T2 renal masses. MATERIALS AND METHODS: Retrospective review of patients undergoing LPN for clinically localized renal masses ≥7cm between the years 2005-2016. Descriptive analyses were generated for demographics, lesion characteristics, perioperative variables (operative time, warm ischemia time (WIT), estimated blood loss (EBL), intra-operative and post-operative complications (IOC and POC) and pathologic variables (pathology, subtype and Fuhrman grade)...
August 8, 2017: International Braz J Urol: Official Journal of the Brazilian Society of Urology
https://www.readbyqxmd.com/read/28753855/ischemia-and-functional-recovery-from-partial-nephrectomy-refined-perspectives
#16
Wen Dong, Jitao Wu, Chalairat Suk-Ouichai, Elvis Caraballo Antonio, Erick M Remer, Jianbo Li, Joseph Zabell, Sudhir Isharwal, Steven C Campbell
BACKGROUND: Nephron mass preservation is a key determinant of functional outcomes after partial nephrectomy (PN), while ischemia plays a secondary role. Analyses focused specifically on recovery of the operated kidney appear to be most informative, yet have only included limited numbers of patients. OBJECTIVE: To evaluate the relative impact of parenchymal preservation and ischemia on functional recovery after PN using a more robust cohort allowing for more refined perspectives about ischemia...
March 3, 2017: European Urology Focus
https://www.readbyqxmd.com/read/28753814/functional-comparison-of-renal-tumor-enucleation-versus-standard-partial-nephrectomy
#17
Wen Dong, Gopal N Gupta, Robert H Blackwell, Jitao Wu, Chalairat Suk-Ouichai, Arpeet Shah, Sarah E Capodice, Marcus L Quek, Elvis Caraballo Antonio, Diego Aguilar Palacios, Erick M Remer, Jianbo Li, Joseph Zabell, Sudhir Isharwal, Steven C Campbell
BACKGROUND: Tumor enucleation (TE) optimizes parenchymal preservation and could yield better function than standard partial nephrectomy (SPN), although data on this are conflicting. OBJECTIVE: To compare functional outcomes for TE and SPN strategies. DESIGN, SETTING, AND PARTICIPANTS: Patients managed with partial nephrectomy (PN) with necessary data for analysis of preservation of ipsilateral parenchymal mass (IPM) and global glomerular filtration rate (GFR) from two centers were included...
June 16, 2017: European Urology Focus
https://www.readbyqxmd.com/read/28750405/untargeted-dna-demethylation-therapy-neither-prevents-nor-attenuates-ischemia-reperfusion-induced-renal-fibrosis
#18
Benjamin A Vervaet, Lies Moonen, Lode Godderis, Katrien Poels, Patrick C D'Haese
BACKGROUND: Current treatment options for chronic kidney disease (CKD) are limited and their focus is on slowing its progression by addressing comorbidities. Fibrosis, the common histopathological process in CKD, is a major therapeutic research target. In CKD, fibroblasts are terminally activated due to alterations in their DNA-methylation pattern, particularly hypermethylation. Preventing the copying of pathological DNA-methylation patterns in proliferating fibroblasts could be a new effective therapeutic strategy for treating CKD...
July 28, 2017: Nephron
https://www.readbyqxmd.com/read/28749082/impact-of-warm-ischemia-time-on-postoperative-renal-function-after-partial-nephrectomy-for-clinical-t1-renal-cell-carcinoma-a-propensity-score-matched-study
#19
Hakmin Lee, Byung Do Song, Seok-Soo Byun, Sang Eun Lee, Sung Kyu Hong
OBJECTIVES: To preserve renal function, partial nephrectomy (PN) is recommended to patients with small renal masses. However, controversy still exists as to whether prolonged ischemia time adversely affects the incidence of chronic kidney disease (CKD) after PN. We analyzed the effect of prolonged warm ischemia time (WIT) on long-term renal function following PN. MATERIALS AND METHODS: We reviewed data from 1,816 patients who underwent PN for clinical T1 renal tumor...
July 27, 2017: BJU International
https://www.readbyqxmd.com/read/28749068/trifecta-outcomes-of-robot-assisted-partial-nephrectomy-in-solitary-kidney-a-vattikuti-collective-quality-initiative-vcqi-database-analysis
#20
Sohrab Arora, Ronney Abaza, James M Adshead, Rajesh K Ahlawat, Benjamin J Challacombe, Prokar Dasgupta, Giorgio Gandaglia, Daniel A Moon, T B Yuvaraja, Umberto Capitanio, Alessandro Larcher, Francesco Porpiglia, James R Porter, Alexander Mottrie, Mahendra Bhandari, Craig Rogers
OBJECTIVES: To analyze the outcomes of robot-assisted partial nephrectomy (RAPN) in patients with a solitary kidney in a large multi-institutional database. PATIENTS AND METHODS: A total of 2755 patients in the Vattikuti Collective Quality Initiative database underwent RAPN by 22 surgeons at 14 centers in nine 9 countries. Out of these patients, 74 underwent RAPN in solitary kidney between 2007 and 2016. A retrospective analysis of the functional and oncological outcomes was performed...
July 27, 2017: BJU International
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