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https://www.readbyqxmd.com/read/29911509/real-time-ultrasound-guided-percutaneous-nephrolithotomy-using-newly-developed-wireless-portable-ultrasound-a-single-center-experience
#1
Yanxiong Chen, Haofeng Zheng, Zhijun Zang, Xiaobin Hong, Weizhong Cai, Youqiang Fang
OBJECTIVES: To assess the feasibility and utility of a newly developed wireless portable ultrasound "UProbe- 2" for puncture guidance in percutaneous nephrolithotomy (PCNL). MATERIALS AND METHODS: The UProbe-2 consists of a probe with integrated ultrasound circuit boards inside, an intelligent terminal that installed specific ultrasound software, and a puncture trestle. The probe can connect to an intelligent terminal via WI-FI. It was used to guide puncture in PCNL in 31 patients who suffered kidney stones or large impacted proximal upper ureteral stones with hydronephrosis from June 2016 to July 2017...
June 1, 2018: Surgical Innovation
https://www.readbyqxmd.com/read/29899999/principles-of-renal-function-measurement-limitations-of-gotch-s-kt-v
#2
Michael Bonert, Bradley A Saville
Kt/V is a nondimensional number and a scaling parameter that has, with arbitrary definitions, been recast as a measure of dialysis by Gotch and Lysaght. This editorial discusses the concept of nondimensional numbers within the context of dialysis measurement, modeling, and medical evidence. It concludes that Gotch's Kt/V, Lysaght's Kt/V, and standardized Kt/V are not well suited to measure dialysis. An ideal dialysis measure would be proportional to toxins cleared by the kidney, portable with regard to dialysis modality, practical (largely devoid of calculations) and reflective of the pathology/physiology...
2018: Canadian Journal of Kidney Health and Disease
https://www.readbyqxmd.com/read/29862002/aldehyde-group-driven-aggregation-induced-enhanced-emission-in-naphthalimides-and-its-application-for-ultradetection-of-hydrazine-on-multiple-platforms
#3
Niranjan Meher, Swagatika Panda, Sachin Kumar, Parameswar Krishnan Iyer
Restriction of intramolecular motion (RIM) of rigid aromatic cores is the most universal mechanism so far that can successfully explain almost all AIE/AIEEgenic systems. By designing two novel naphthalimide derivatives ( NIB and NIBD ), we experimentally demonstrated the effect of a single formyl group that can efficiently transform an aggregation caused quenching (ACQ) system ( NIB ) into an AIEEgenic system ( NIBD ) by strengthening the RIM process. Besides, the newly designed naphthalimide AIEEgen ( NIBD ) accomplished ultrasensitive detection of hydrazine at the parts per trillion level (LOD/81 ppt) in aqueous media with high selectivity and enormous improvement over the existing state of the art...
April 28, 2018: Chemical Science
https://www.readbyqxmd.com/read/29761521/negative-predictive-value-of-contrast-enhanced-ultrasound-in-differentiating-avascular-solid-appearing-from-vascularized-masses-a-retrospective-consecutive-study
#4
Abdulmohsen Alrashed, Hassan Ahmad, Korosh Khalili, Tae Kyoung Kim, Huynh-Jung Jang, Mostafa Atri
OBJECTIVES: To determine the negative predictive value (NPV) of contrast-enhanced ultrasound (CEUS) to establish the lack of vascularity in a mass. METHODS: This work was an Institutional Review Board-approved, Health Insurance Portability and Accountability Act-compliant retrospective study. Acquisition of consent was waived. We included all CEUS examinations performed for tissue characterization between 2004 and 2014 that reported showing no vascularity in a mass...
May 15, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29694015/ultrasonic-preparation-of-porous-silica-dye-microspheres-sensors-for-quantification-of-urinary-trimethylamine-n-oxide
#5
Zheng Li, Kenneth S Suslick
Trimethylamine N-oxide (TMAO), the N-oxide metabolite of trimethylamine (TMA), is a key index in the determination of a wide variety of human cardiac or kidney diseases. A colorimetric sensor array comprising ultrasonically prepared silica-dye microspheres was developed for rapid, portable, and sensitive detection of urinary TMAO. To prepare the sensor array, 13 different organically modified silica (ormosil)-dye composites were synthesized from the hydrolysis/pyrolysis of ultrasonically sprayed organosiloxane precursors under optimized reaction conditions; the resulting products are uniformly sized nanoporous microspheres that are effective colorimetric sensors for various volatile analytes...
May 9, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29664482/my-hypertension-education-and-reaching-target-myheart-development-and-dissemination-of-a-patient-centered-website-for-young-adults-with-hypertension
#6
Heather M Johnson, Jamie N LaMantia, Colleen M Brown, Ryan C Warner, Laura M Zeller, Ryan C Haggart, Keven Stonewall, Diane R Lauver
Background: Young adults (18 to 39 years old) with hypertension have the lowest rates of blood pressure control (defined as blood pressure less than 140/90 mmHg) compared to other adult age groups. Approximately 1 in 15 young adults have high blood pressure, increasing their risk of future heart attack, stroke, congestive heart failure, and/or chronic kidney disease. Many young adults reported having few resources to address their needs for health education on managing cardiovascular risk...
July 2017: JMIR cardio
https://www.readbyqxmd.com/read/29565315/miniaturized-bio-and-chemical-sensors-for-point-of-care-monitoring-of-chronic-kidney-diseases
#7
REVIEW
Antonio Tricoli, Giovanni Neri
This review reports the latest achievements in point-of-care (POC) sensor technologies for the monitoring of ammonia, creatinine and urea in patients suffering of chronic kidney diseases (CKDs). Abnormal levels of these nitrogen biomarkers are found in the physiological fluids, such as blood, urine and sweat, of CKD patients. Delocalized at-home monitoring of CKD biomarkers via integration of miniaturized, portable, and low cost chemical- and bio-sensors in POC devices, is an emerging approach to improve patients' health monitoring and life quality...
March 22, 2018: Sensors
https://www.readbyqxmd.com/read/29517917/nanoscale-electrochemical-sensing-and-processing-in-microreactors
#8
Mathieu Odijk, Albert van den Berg
In this review, we summarize recent advances in nanoscale electrochemistry, including the use of nanoparticles, carbon nanomaterials, and nanowires. Exciting developments are reported for nanoscale redox cycling devices, which can chemically amplify signal readout. We also discuss promising high-frequency techniques such as nanocapacitive CMOS sensor arrays or heterodyning. In addition, we review electrochemical microreactors for use in (drug) synthesis, biocatalysis, water treatment, or to electrochemically degrade urea for use in a portable artificial kidney...
March 8, 2018: Annual Review of Analytical Chemistry
https://www.readbyqxmd.com/read/29458692/effect-of-sleep-disordered-breathing-on-albuminuria-in-273-patients-with-type-2-diabetes
#9
Akihiro Nishimura, Takatoshi Kasai, Shota Kikuno, Kaoru Nagasawa, Minoru Okubo, Koji Narui, Yasumichi Mori
STUDY OBJECTIVES: Sleep-disordered breathing (SDB) can induce hyperglycemia, hypertension, and oxidative stress, conditions that are known to cause kidney damage. Therefore, SDB may exacerbate albuminuria, which is an established marker of early-stage kidney damage in patients with type 2 diabetes mellitus (T2DM). The association between SDB and albuminuria in patients with T2DM was investigated in this study. METHODS: This cross-sectional study included 273 patients with T2DM who underwent portable sleep testing and measurement of urine albumin to creatinine ratio (UACR)...
March 15, 2018: Journal of Clinical Sleep Medicine: JCSM: Official Publication of the American Academy of Sleep Medicine
https://www.readbyqxmd.com/read/29434725/a-novel-hypothermic-machine-perfusion-system-using-a-lifeport-kidney-transporter-for-the-preservation-of-rat-liver
#10
Cheng Zeng, Xiaoyan Hu, Yanfeng Wang, Xianpeng Zeng, Yan Xiong, Ling Li, Qifa Ye
The protective mechanisms for liver preservation associated with hypothermic machine perfusion (HMP) remain unclear. However, the lack of a common and portable HMP system for rat livers limits the study of HMP. The present study aimed to develop a novel, modified HMP system using a LifePort Kidney Transporter for preserving rat livers. A simple 'Y' shunt combined with a pressoreceptor for flow and pressure regulation was adapted to perfuse rat livers via the portal vein continuously using a LifePort Kidney Transporter under its 'prime mode' setting...
February 2018: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/29374811/a-novel-3d-printed-hybrid-simulation-model-for-robotic-assisted-kidney-transplantation-rakt
#11
Raphael Uwechue, Petrut Gogalniceanu, Nicos Kessaris, Nick Byrne, Pankaj Chandak, Jonathon Olsburgh, Kamran Ahmed, Nizam Mamode, Ioannis Loukopoulos
Robotic-assisted kidney transplantation (RAKT) offers key benefits for patients that have been demonstrated in several studies. A barrier to the wider uptake of RAKT is surgical skill acquisition. This is exacerbated by the challenges of modern surgery with reduced surgical training time, patient safety concerns and financial pressures. Simulation is a well-established method of developing surgical skill in a safe and controlled environment away from the patient. We have developed a 3D printed simulation model for the key step of the kidney transplant operation which is the vascular anastomosis...
January 27, 2018: Journal of Robotic Surgery
https://www.readbyqxmd.com/read/29161894/new-advanced-bench-model-for-flexible-ureteroscopic-training-the-smart-simulator
#12
Takaaki Inoue, Shinsuke Okada, Shuzo Hamamoto, Tadashi Matsuda
Smart Simulator is a new advanced bench training model for achieving proficiency in flexible ureteroscopy (fURS). Its important features are portability and the ability to simulate breathing-induced kidney movements, model pyelocalices similar to those in humans, create a situation closely resembling a fURS field, and create papillae of a size equivalent to that of the access sheath. Smart Simulator thus creates a situation more closely resembling that in a clinical setting than the other bench training models for fURS...
November 22, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/29059860/brachial-artery-stiffness-estimation-using-artsens
#13
V Raj Kiran, P M Nabeel, Jayaraj Joseph, Mohanasankar Sivaprakasam
Central and peripheral arteries stiffening prominently affect hemodynamics thus increasing the risk of coronary heart disease, chronic kidney disease and end stage renal disease. There are several commercially available non-invasive measurement technologies for the evaluation of stiffness that are expensive, demand dedicated expertise and fall short for mass screening. Considering this, we have developed ARTSENS® , a highly compact and portable image-free ultrasound device for evaluation of arterial stiffness...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/29053921/integrated-kidney-exosome-analysis-for-the-detection-of-kidney-transplant-rejection
#14
Jongmin Park, Hsing-Ying Lin, Jean Pierre Assaker, Sangmoo Jeong, Chen-Han Huang, A Kurdi, Kyungheon Lee, Kyle Fraser, Changwook Min, Siawosh Eskandari, Sujit Routray, Bakhos Tannous, Reza Abdi, Leonardo Riella, Anil Chandraker, Cesar M Castro, Ralph Weissleder, Hakho Lee, Jamil R Azzi
Kidney transplant patients require life-long surveillance to detect allograft rejection. Repeated biopsy, albeit the clinical gold standard, is an invasive procedure with the risk of complications and comparatively high cost. Conversely, serum creatinine or urinary proteins are noninvasive alternatives but are late markers with low specificity. We report a urine-based platform to detect kidney transplant rejection. Termed iKEA (integrated kidney exosome analysis), the approach detects extracellular vesicles (EVs) released by immune cells into urine; we reasoned that T cells, attacking kidney allografts, would shed EVs, which in turn can be used as a surrogate marker for inflammation...
November 28, 2017: ACS Nano
https://www.readbyqxmd.com/read/28799694/patient-with-a-total-artificial-heart-maintained-on-outpatient-dialysis-while-listed-for-combined-organ-transplant-a-single-center-experience
#15
Ramy M Hanna, Huma Hasnain, Mohammad Kamgar, Mina Hanna, Raffi Minasian, James Wilson
Advanced mechanical circulatory support is increasingly being used with more sophisticated devices that can deliver pulsatile rather than continuous flow. These devices are more portable as well, allowing patients to await cardiac transplantation in an outpatient setting. It is known that patients with renal failure are at increased risk for developing worsening acute kidney injury during implantation of a ventricular assist device (VAD) or more advanced modalities like a total artificial heart (TAH). Dealing with patients who have an implanted TAH who develop renal failure has been a challenge with the majority of such patients having to await a combined cardiac and renal transplant prior to transition to outpatient care...
October 2017: Hemodialysis International
https://www.readbyqxmd.com/read/28728609/multiple-myeloma-can-be-accurately-diagnosed-in-acute-kidney-injury-patients-using-a-rapid-serum-free-light-chain-test
#16
Jennifer L J Heaney, John P Campbell, Punit Yadav, Ann E Griffin, Meena Shemar, Jennifer H Pinney, Mark T Drayson
BACKGROUND: Acute kidney injury (AKI) is common in patients with multiple myeloma (MM). Whether serum free light chain (sFLC) measurements can distinguish between myeloma and other causes of AKI requires confirmation to guide early treatment. A rapid and portable sFLC test (Seralite®) is newly available and could reduce delays in obtaining sFLC results and accelerate diagnosis in patients with unexplained AKI. This study evaluated the accuracy of Seralite® to identify MM as the cause of AKI...
July 20, 2017: BMC Nephrology
https://www.readbyqxmd.com/read/28705074/factors-associated-with-severity-of-sleep-apnoea-syndrome-in-patients-with-chronic-kidney-disease
#17
Akihito Tanaka, Daijo Inaguma, Eri Ito, Naoki Kamegai, Akiko Kato, Minami Mizutani, Hiroya Shimogushi, Hibiki Shinjo, Yasuhiro Otsuka, Asami Takeda
Background In patients with chronic kidney disease (CKD), prevalence of sleep apnoea syndrome (SAS) is reported to be markedly high. However, the factors associated with severity of SAS in such patients rarely have been reported. Methods This was a cross-sectional study of 100 stable non-dialysis patients with CKD who attended a CKD educational programme from April 2014 to August 2015. Diagnosis of SAS and its severity were assessed using a type-3 portable monitor. Results Eighty-six men and 14 women with a mean age of 71...
August 2017: Acta Cardiologica
https://www.readbyqxmd.com/read/28691728/intervention-to-diminish-dehydration-and-kidney-damage-among-sugarcane-workers
#18
David H Wegman, Jenny Apelqvist, Matteo Bottai, Ulf Ekström, Ramón García-Trabanino, Jason Glaser, Christer Hogstedt, Kristina Jakobsson, Emmanuel Jarquín, Rebekah A I Lucas, Ilana Weiss, Catharina Wesseling, Theo Bodin
Objective The aim of this study was to assess the potential to reduce kidney function damage during the implementation of a water, rest, shade (WRS) and efficiency intervention program among sugarcane workers. Methods A WRS intervention program adapted from the US Occupational Safety and Health Administration (OSHA) coupled with an efficiency program began two months into the 5-month harvest. One of the two groups of workers studied was provided with portable water reservoirs, mobile shaded tents, and scheduled rest periods...
January 1, 2018: Scandinavian Journal of Work, Environment & Health
https://www.readbyqxmd.com/read/28682572/carmelo-giordano-1930-2016-a-giant-in-nephrology
#19
Natale De Santo, Carlo De Pascale, Ernesto Quarto, Malcolm E Phillips, Biagio Di Iorio
Carmelo Giordano (Carmine, Louis, Joseph Giordano) was born in Naples on August 23, 1930 in the house of Rafael and Anna Tirone He received the MD cum laude in 1954. He was Fellow and assistant to Professor Flaviano Magrassi and studied nephrology at the Peter Bent Brigham Hospital, University of Harvard in Boston, under the guidance of John P. Merrill (1958-1960). He was nominated Professor of Nephrology at the University Federico II, Naples in 1975 and Professor of Medicine at the Second University of Naples (1986-2002)...
April 2017: Giornale Italiano di Nefrologia: Organo Ufficiale Della Società Italiana di Nefrologia
https://www.readbyqxmd.com/read/28566259/multimodal-approach-in-radioguided-surgery-in-a-case-of-multiple-paraganglioma
#20
N Sánchez, A Tapias, H Bowles, E Delgado, R Almenara, D Fuster, S Vidal-Sicart
The case involves a 34-year-old woman who underwent surgical removal of a retroperitoneal paraganglioma adjacent to the left kidney's lower pole, previously visualized by CT and MRI. The123 I-MIBG scan was positive for this lesion and, in addition, another uptake was observed located caudally at the level of L5 and of smaller size and less intensity. The second lesion was not considered for surgical removal, due to its lack of morphological definition. One week after surgical intervention, the patient presented difficult-to-control high blood pressure...
January 2018: Revista Española de Medicina Nuclear e Imagen Molecular
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