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Renal Ultrasound

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https://www.readbyqxmd.com/read/27905299/lack-of-an-apparent-role-for-endothelin-1-in-the-prolonged-reduction-in-renal-perfusion-following-severe-unilateral-ischemia-reperfusion-injury-in-the-mouse
#1
Erika I Boesen
Therapeutic approaches to block the progression from acute kidney injury to chronic kidney disease are currently lacking. Endothelin-1 (ET-1) is a powerful vasoconstrictor, induced by hypoxia, and previously implicated in renal ischemia-reperfusion (IR) injury. This study tested the hypothesis that blunting the vascular influence of ET-1, either through endothelin ETA receptor blockade (ABT-627) or vascular endothelial cell deletion of ET-1 (VEET KO), would improve recovery of renal perfusion and repair of injury following a severe ischemic insult in mice (45 min unilateral renal ischemia)...
November 2016: Physiological Reports
https://www.readbyqxmd.com/read/27903485/endovascular-repair-of-thoraco-abdominal-aortic-aneurysm-in-high-surgical-risk-patients-fenestrated-and-branched-endografts
#2
E Gallitto, M Gargiulo, A Freyrie, C Bianchini Massoni, R Pini, C Mascoli, G L Faggioli, S Ancetti, A Stella
AIM: To report early and mid-term results of endovascular repair of thoraco-abdominal aneurysms (TAAA) by using of Cook-Zenith fenestrated/branched endografts (FB-EVAR) in high-surgical risk patients unfit for open repair (OR). METHODS: Between January 2012 and April 2015, all the patients with TAAA, considered at high-surgical risk for OR and treated by Cook-Zenith FB-EVAR, were prospectively enrolled. Patients were studied using a thoraco-abdominal computer tomography angiography (CTA) and dedicated software for advanced vessels analysis...
November 26, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27903081/percutaneous-microwave-ablation-of-renal-cell-carcinoma-is-safe-in-patients-with-renal-dysfunction
#3
Yan Lin, Ping Liang, Xiao-Ling Yu, Jie Yu, Zhi-Gang Cheng, Zhi-Yu Han, Fangyi Liu
OBJECTIVES: To present the clinical effect of microwave ablation(MWA) on renal cell carcinoma(RCC) of the patients with renal dysfunction, mainly focusing on the extent of renal tumor control and damage to the residual kidney function. METHODS AND MATERIALS: From 2006 to 2014, 19 tumors of 18 patients with renal dysfunction underwent percutaneous ultrasound-guided MWA in our institution. The tumor diameters range from 1.9 to 5.0cm. The serum creatinine and urea levels of each patient pre-MWA, 1 day after MWA and the most recent occasion on record at our institution were collected...
November 30, 2016: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/27900958/renal-shear-wave-velocity-and-estimated-glomerular-filtration-rate-in-children-with-chronic-kidney-disease
#4
Costanza Bruno, Milena Brugnara, Rocco Micciolo, Mariangela Cecchetto, Michele Zuffante, Alessandra Bucci, Marco Zaffanello
A shear wave velocity (SWV) value obtained by the acoustic radiation force impulse technique depends on tissue elasticity. We investigated the relationship between SWV values and the estimated glomerular filtration rate (eGFR) in children with chronic kidney disease. A total of 29 patients were enrolled in the study. There were 18 primary and 11 secondary cases of vesicoureteral reflux. eGFR was calculated using Schwartz's formulas (2012). Partial eGFR for each kidney was assessed by multiplying the eGFR by the percentage of renal function measured by means of renal (99m)Tc-dimercaptosuccinic acid scintigraphy...
November 2016: Saudi Journal of Kidney Diseases and Transplantation
https://www.readbyqxmd.com/read/27900939/incidence-and-implications-of-silent-hydronephrosis-following-percutaneous-nephrolithotomy%C3%A2
#5
Lawrence Dagrosa, Rachel Moses, Vernon Pais
OBJECTIVE: While routine renal imaging following ureteroscopy for urinary calculi has been recommended to screen for asymptomatic "silent" obstruction, the rate of silent obstruction following percutaneous nephrolithotomy (PCNL) remains poorly defined, and no consensus recommendations exist on routine postoperative imaging. At our institution, we sought to assess the incidence of silent hydronephrosis (SH), as a screen for obstruction, following PCNL. METHODS: The records of all 162 patients who met study inclusion criteria were reviewed...
November 30, 2016: Clinical Nephrology
https://www.readbyqxmd.com/read/27900863/-symptomatic-and-asymptomatic-primary-hyperparathyroidism-in-outpatient-care-current-issues
#6
Helena Šiprová, Miroslav Souček, Zdeněk Fryšák, Květoslav Šipr
OBJECTIVE: To assess the diagnostic and therapeutic options in the care of patients with primary hyperparathyreosis in outpatient practice.Cohort and methods: The study included all the patients with primary hyperparathyroidism treated at the 2nd Internal Medicine Department, Masaryk University and the University Hospital of St. Anne in Brno in the period from Jan 1, 2008 to Dec 31, 2013. The sample consisted of 218 patients, including 41 men and 177 women. Patients with secondary hyperparathyroidism, especially patients with underlying hypovitaminosis D, renal insufficiency and those taking medications with possible effects on parathyroid hormone levels, have not been included in the study...
2016: Vnitr̆ní Lékar̆ství
https://www.readbyqxmd.com/read/27895448/neonatal-acute-kidney-injury-following-valsartan-exposure-in-utero-report-of-two-cases
#7
E Tsepkentzi, K Sarafidis, A Sotiriadis, K Chatzistamatiou, V Drossou-Agakidou
BACKGROUND: Maternal sartan intake during pregnancy has been associated with several fetal/neonatal complications related to disturbed renal development. Description of cases: We present two cases of neonatal acute kidney injury (AKI) following valsartan administration during pregnancy and provide evidence for the use of novel AKI biomarkers in these neonates. The first case was a female neonate, delivered at 32+4 weeks of gestation after maternal valsartan intake from 24 to 32 gestational weeks...
January 2016: Hippokratia
https://www.readbyqxmd.com/read/27895243/contrast-less-stent-placement-for-vertebral-artery-origin-stenosis
#8
Shinzo Ota, Yoshinobu Sekihara, Takahiro Himeno, Yasue Tanaka, Tatsuya Ohtonari
We performed stent placement under intravascular ultrasound (IVUS), without the use of contrast medium, in a male patient in his 70s who had vertebral artery origin stenosis and decreased renal function. Satisfactory dilatation was achieved without complications, and the patient remained asymptomatic at 2 years of follow-up. We now report the details of this procedure. Stent placement under IVUS guidance may be useful in patients in whom contrast medium is contraindicated.
November 28, 2016: Interventional Neuroradiology
https://www.readbyqxmd.com/read/27894116/intrarenal-vascular-resistance-is-associated-with-a-prothrombotic-state-in-hypertensive-patients
#9
Cristiana Catena, GianLuca Colussi, Marileda Novello, Valentina Fagotto, Leonardo A Sechi
BACKGROUND/AIMS: Hypertensive nephroangiosclerosis is associated with progressive increase of intrarenal vascular resistance. In addition to blood pressure, other factors can contribute to hypertensive renal damage including a prothrombotic state. We investigated the relationship between hemostatic markers and intrarenal vascular resistance in hypertension. METHODS: In 115 untreated, nondiabetic, hypertensive subjects free of cardiovascular complications and advanced renal function impairment, we measured 24-hour creatinine clearance (GFR) and urinary albumin excretion (UAE), fasting plasma glucose, HOMA-index, and plasma levels of fibrinogen, D-dimer, prothrombin fragment 1+2, plasminogen activator inhibitor-1, homocysteine, and lipoprotein(a)...
November 29, 2016: Kidney & Blood Pressure Research
https://www.readbyqxmd.com/read/27889551/endothelial-dysfunction-and-cardiovascular-risk-factors-in-childhood-acute-lymphoblastic-leukemia-survivors
#10
Paola Giordano, Paola Muggeo, Maurizio Delvecchio, Santa Carbonara, Alberto Romano, Maria Altomare, Gabriella Ricci, Federica Valente, Annapaola Zito, Pietro Scicchitano, Luciano Cavallo, Marco Matteo Ciccone, Nicola Santoro, Maria Felicia Faienza
BACKGROUND: Childhood acute lymphoblastic leukemia (ALL) survivors have increased risk of obesity, metabolic alterations and cardiovascular disease (CVD). Vascular endothelial function has been studied in adult cancers. Limited data exist regarding CVD risk factors among childhood ALL survivors. We aimed to assess endothelial function, metabolic and cardiovascular risk factors in young survivors of childhood ALL. METHODS: Auxological parameters, blood pressure, glucose, lipid profile, hemostatic markers (total adiponectin and high-molecular-weight subfraction, endothelin-1, von Willebrand factor antigen, thrombin-antithrombin complex, D-dimers, fibrinogen), high sensitive C-reactive protein and ultrasound parameters of endothelial function (flow-mediated dilation-FMD, common carotid intima-media thickness-C-IMT, and antero-posterior diameter of infra-renal abdominal aorta-APAO) were assessed in 52 ALL survivors and 34 sex and age-matched controls...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27889224/fetal-megacystis-a-systematic-review
#11
REVIEW
K Taghavi, C Sharpe, M D Stringer
: Fetal megacystis is variably defined and understood. The literature on fetal megacystis was systematically reviewed, focusing on prenatal diagnosis, associations and outcomes. This yielded a total of 18 primary references and eight secondary references. Fetal megacystis has an estimated first-trimester prevalence of between 1:330 and 1:1670, with a male to female ratio of 8:1. In the first trimester, megacystis is most commonly defined as a longitudinal bladder dimension of ≥7 mm...
October 8, 2016: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/27889221/the-swedish-infant-high-grade-reflux-trial-study-presentation-and-vesicoureteral-reflux-outcome
#12
Josefin Nordenström, Gundela Holmdahl, Per Brandström, Rune Sixt, Eira Stokland, Ulla Sillén, Sofia Sjöström
INTRODUCTION: High-grade vesicoureteral reflux (VUR) in infants is associated with congenital renal abnormalities, recurrent UTI, and bladder dysfunction. Endoscopic treatment (ET) is a well-established method in children with low to moderate reflux grades, but there is a lack of randomised controlled trials regarding the use of ET versus continuous antibiotic prophylaxis in infants with high-grade VUR. OBJECTIVE: This study aimed to determine whether high-grade VUR in infants can be treated with endoscopic injection and whether ET is superior to antibiotic prophylaxis in the treatment of VUR...
October 24, 2016: Journal of Pediatric Urology
https://www.readbyqxmd.com/read/27886364/ultrasound-guided-angioplasty-for-treatment-of-peripheral-stenosis-of-arteriovenous-fistula-a-single-center-experience
#13
Sunil Kumar, Nikhil Mahajan, Shivakumar S Patil, Navdeep Singh, Soham Dasgupta, Seetharam Tejavath, Sarbpreet Singh, Deepesh B Kenwar, Ashish Sharma, Mukut Minz
PURPOSE: In patients with end-stage renal disease, arteriovenous fistulas (AVFs) are the access of choice for hemodialysis but are often complicated by stenosis. We present single-center experience of 78 ultrasound-guided angioplasty procedures for treating peripheral stenoses of AVFs. METHODS: Between January 2013 and November 2015, 78 angioplasties were performed under ultrasound guidance in 53 patients with end-stage renal disease who were referred from dialysis centers with low flow rate, difficult cannulation, increased cannulation site bleeding, immature or thrombosed AVF...
November 22, 2016: Journal of Vascular Access
https://www.readbyqxmd.com/read/27886003/mri-and-contrast-enhanced-ultrasound-ceus-image-fusion-of-renal-cysts
#14
J Rübenthaler, K J Paprottka, J Marcon, M Reiser, D A Clevert
Ultrasound is a common and established imaging method for the initial characterization of renal lesions. The widespread used Bosniak classification (I-IV) classifies renal lesions in five individual groups using contrast-enhanced computer tomography (CE-CT), magnetic resonance imaging (MRI) and/or contrast-enhanced ultrasound (CEUS) imaging criteria. For complex pathologies, CEUS/MRI image fusion is a novel imaging technique for the differentiation of benign and malignant renal lesions. Compared to CE-CT and MRI alone, ultrasound image fusion offers the additional possibility of being a real-time imaging technique that can be used together with other cross-sectional imaging techniques...
November 23, 2016: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/27882736/crystalline-nephropathy-caused-by-tosufloxacin
#15
Risa Matsubara, Tetsuya Kibe, Takemasa Nomura
A 14-year-old girl was treated for 3 days with tosufloxacin (450 mg twice a day) for acute bronchitis and then developed acute kidney injury. Renal ultrasound showed enlarged kidneys without hydronephrosis. Urinalysis indicated drug crystal casts (2-3/HPF), consistent with drug-induced crystalline nephropathy. The patient recovered gradually with i.v. hydration and discontinuation of tosufloxacin, leading to the diagnosis of tosufloxacin crystalline nephropathy. Medical practitioners should be aware that crystalline nephropathy can occur in pediatric patients receiving tosufloxacin...
November 2016: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/27882009/functional-and-structural-abnormalities-of-the-kidney-and-urinary-tract-in-severely-malnourished-children-a-hospital-based-study
#16
Misbah Anjum, Khemchand N Moorani, Ifra Sameen, Muhammad Ayaz Mustufa, Shazia Kulsoom
OBJECTIVES: The association of malnutrition and systemic diseases like chronic kidney disease (CKD) is well known. Various urinary tract abnormalities may be associated with malnutrition. So objective of current study was to determine the frequency of functional and structural urinary tract abnormalities in severely malnourished children admitted in Nutritional Rehabilitation Unit (NRU) of a tertiary care facility, Karachi. METHODS: This descriptive cases series of 78 children was conducted in NRU from October 2014 - March 2015...
September 2016: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/27878331/fluoroscopy-versus-ultrasound-for-image-guidance-during-percutaneous-nephrolithotomy-a-systematic-review-and-meta-analysis
#17
REVIEW
Qiang Liu, Liang Zhou, Xiang Cai, Tao Jin, Kunjie Wang
This meta-analysis aims to compare the safety and efficacy of fluoroscopy versus ultrasound guidance during the access to the renal collecting system. A systematic literature review was performed in September 2016. Outcomes were explored using review manager v5.0. 18 studies with 2919 patients were included in the final analysis. There was no significant difference in stone-free rate (RR: 1.0; 95% CI, 0.98 to 1.05; p = 0.41), operation time (MD: 1.75; 95% CI, -9.15 to 12.65; p = 0.75), hospital stay (MD: -1...
November 22, 2016: Urolithiasis
https://www.readbyqxmd.com/read/27875796/development-of-extensive-inferior-vena-cava-thrombosis-due-to-the-ligation-of-a-large-mesenteric-caval-shunt-during-liver-transplantation-a-case-report
#18
Hideya Kamei, Yasuharu Onishi, Masatoshi Ishigami, Yoji Ishizu, Kojiro Suzuki, Yasuhiro Ogura
INSTRUCTION: Inferior vena cava (IVC) thrombosis can be a life-threatening complication after liver transplantation (LT). Although this complication is usually related to technical problems associated with vascular anastomosis, we report a case of IVC thrombosis which developed from a ligated large mesenteric-caval shunt. PRESENTATION OF CASE: A 35-year-old man underwent LT from a brain-dead donor for primary sclerosing cholangitis. Enhanced computed tomography (CT) before LT showed a huge collateral vessel of the inferior mesenteric vein (IMV) draining into the infra-renal IVC directly...
November 15, 2016: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/27873231/atherosclerotic-renal-artery-stenosis
#19
Robert Schoepe, Stephen McQuillan, Debbie Valsan, Geoffrey Teehan
Atherosclerotic Renal Artery Stenosis is a form or peripheral arterial disease that tends to affect older subjects with hyperlipidemia, history of tobacco use, and who have other coexistent forms of vascular insufficiency. An abdominal bruit on physical exam can be a helpful clue. Slowly progressive, it can lead to critical narrowing of the renal arteries which creates a cascade of events such as renin-angiotensin-aldosterone activation (RAAS), hypertension, acute pulmonary edema, and renal fibrosis. The hypertension is considered a secondary form and can even be resistant to multiple antihypertensives...
November 22, 2016: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/27872616/novel-approach-for-evaluation-of-bacteroides-fragilis-protective-role-against-bartonella-henselae-liver-damage-in-immunocompromised-murine-model
#20
Chiara Pagliuca, Annunziata G Cicatiello, Roberta Colicchio, Adelaide Greco, Raimondo Cerciello, Luigi Auletta, Sandra Albanese, Elena Scaglione, Caterina Pagliarulo, Gabiria Pastore, Gelsomina Mansueto, Arturo Brunetti, Bice Avallone, Paola Salvatore
Bartonella henselae is a gram-negative facultative intracellular bacterium and is the causative agent of cat-scratch disease. Our previous data have established that Bacteroides fragilis colonization is able to prevent B. henselae damages through the polysaccharide A (PSA) in an experimental murine model. In order to determine whether the PSA is essential for the protection against pathogenic effects of B. henselae in immunocompromised hosts, SCID mice were co-infected with B. fragilis wild type or its mutant B...
2016: Frontiers in Microbiology
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