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AKI Ultrasound

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https://www.readbyqxmd.com/read/29147470/retrospective-analysis-of-inferior-vena-cava-collapsibility-with-point-of-care-ultrasound-and-urine-sodium-and-fena-in-patients-with-early-stage-acute-kidney-injury
#1
Faizan Babar, Gurkeerat Singh, Mustafa Noor, Bruce Sabath
Early stage acute kidney injury (AKI) is an independent risk factor for an increase in mortality. Accurate assessment of volume status is a major challenge during the early stages of acute renal injury. Determining volume status based on the history and physical exam lacks accuracy. Urine sodium and free excretion of sodium (FENa) provide objective evidence of intravascular volume status when interpreted carefully and is helpful to delineate prerenal from intrinsic renal failure. In recent years point of care ultrasound has been used to assess volume status...
2017: Journal of Community Hospital Internal Medicine Perspectives
https://www.readbyqxmd.com/read/29057120/ivc-measurements-in-critically-ill-patients-with-acute-renal-failure
#2
Rami Jambeih, Jean I Keddissi, Houssein A Youness
OBJECTIVE: To determine whether the inferior vena cava (IVC) measurement by bedside ultrasound (US-IVC) predicts improvement in renal function in patients with acute kidney injury (AKI). DESIGN: Prospective observational study. SETTING: Medical intensive care unit. PATIENTS: 33 patients with AKI were included. INTERVENTION: US-IVC was done on admission. The patients' management was done by the primary teams, who were unaware of the US-IVC findings...
2017: Critical Care Research and Practice
https://www.readbyqxmd.com/read/29047410/association-between-kidney-intracapsular-pressure-and-ultrasound-elastography
#3
Kianoush B Kashani, Shennen A Mao, Sami Safadi, Bruce P Amiot, Jaime M Glorioso, John C Lieske, Scott L Nyberg, Xiaoming Zhang
BACKGROUND: Kidney congestion is a common pathophysiologic pathway of acute kidney injury (AKI) in sepsis and heart failure. There is no noninvasive tool to measure kidney intracapsular pressure (KIP) directly. METHODS: We evaluated the correlation of KIP with kidney elasticity measured by ultrasound surface wave elastography (USWE). We directly measured transcatheter KIP in three pigs at baseline and after bolus infusion of normal saline, norepinephrine, vasopressin, dopamine, and fenoldopam; infiltration of 2-L peritoneal dialysis solution in the intra-abdominal space; and venous, arterial, and ureteral clamping...
October 19, 2017: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29025295/ultrasonography-guided-percutaneous-microwave-ablation-for-large-hepatic-cavernous-hemangiomas
#4
Fangyi Liu, Xiaoling Yu, Ping Liang, Zhigang Cheng, Zhiyu Han, Jie Yu
PURPOSE: To evaluate the efficacy and safety of ultrasound-guided percutaneous microwave ablation (MWA) for large hepatic cavernous hemangiomas (HCHs) with ablation of the feeding artery and aspiration of blood from hemangioma simultaneously. MATERIALS AND METHODS: From January 2011 to December 2016, 40 patients (29 females, 11male; average age 43.25±7.65 years) with 42 giant hepatic hemangiomas (mean diameter7.02±1.55cm, range4.1-10.8 cm) were treated with image-guided percutaneous MWA with ablation of the feeding artery and aspiration of blood from hemangioma simultaneously...
October 12, 2017: International Journal of Hyperthermia
https://www.readbyqxmd.com/read/28970585/targeting-neural-reflex-circuits-in-immunity-to-treat-kidney-disease
#5
REVIEW
Mark D Okusa, Diane L Rosin, Kevin J Tracey
Neural pathways regulate immunity and inflammation via the inflammatory reflex and specific molecular targets can be modulated by stimulating neurons. Neuroimmunomodulation by nonpharmacological methods is emerging as a novel therapeutic strategy for inflammatory diseases, including kidney diseases and hypertension. Electrical stimulation of vagus neurons or treatment with pulsed ultrasound activates the cholinergic anti-inflammatory pathway (CAP) and protects mice from acute kidney injury (AKI). Direct innervation of the kidney, by afferent and efferent neurons, might have a role in modulating and responding to inflammation in various diseases, either locally or by providing feedback to regions of the central nervous system that are important in the inflammatory reflex pathway...
November 2017: Nature Reviews. Nephrology
https://www.readbyqxmd.com/read/28923914/new-ultrasound-techniques-promise-further-advances-in-aki-and-ckd
#6
REVIEW
Travis D Hull, Anupam Agarwal, Kenneth Hoyt
AKI and CKD are important clinical problems because they affect many patients and the associated diagnostic and treatment paradigms are imperfect. Ultrasound is a cost-effective, noninvasive, and simple imaging modality that offers a multitude of means to improve the diagnosis, monitoring, and treatment of both AKI and CKD, especially considering recent advances in this technique. Ultrasound alone can attenuate AKI and prevent CKD by stimulating the splenic cholinergic anti-inflammatory pathway. Additionally, microbubble contrast agents are improving the sensitivity and specificity of ultrasound for diagnosing kidney disease, especially when these agents are conjugated to ligand-specific mAbs or peptides, which make the dynamic assessment of disease progression and response to treatment possible...
September 18, 2017: Journal of the American Society of Nephrology: JASN
https://www.readbyqxmd.com/read/28900861/acute-kidney-injury-caused-by-decompression-illness-successfully-treated-with-hyperbaric-oxygen-therapy-and-temporary-dialysis
#7
Arata Hibi, Keisuke Kamiya, Takahisa Kasugai, Keisuke Kamiya, Satoru Kominato, Chiharu Ito, Toshiyuki Miura, Katsushi Koyama
A 52-year-old Japanese male professional diver was referred to our hospital for decompression illness (DCI). After 1 h of diving operation at 20 m below sea level, he complained of dyspnea, chest pain, and abdominal pain. He dove again, intending to ease the symptoms, but the symptoms were never relieved. He dove for a total of 4 h. No neurological abnormalities were observed. Computed tomography images revealed portal venous gas and mesenteric venous gas, in addition to bubbles in the femoral veins, pelvis, lumbar canal, intracranial sinuses, and joints...
November 2017: CEN Case Reports
https://www.readbyqxmd.com/read/28865484/renal-ultrasound-provides-low-utility-in-evaluating-cardiac-surgery-associated-acute-kidney-injury
#8
Allen Young, Todd Crawford, Alejandro Suarez Pierre, J Trent Magruder, Charles Fraser, John Conte, Glenn Whitman, Christopher Sciortino
BACKGROUND: Renal ultrasonography is part of the algorithm in assessing acute kidney injury (AKI). The purpose of this study was to assess the clinical utility of renal US in postoperative cardiac patients who develop AKI. METHODS: We conducted a retrospective study of 90 postoperative cardiac surgery patients at a single institution from 1/19/2010 to 3/19/2016 who underwent renal US for AKI. We reviewed provider documentation to determine whether renal US changed management...
September 2, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28833513/application-of-an-enhanced-device-to-transluminal-retrieval-of-malappositioned-coronary-stents-an-experimental-study
#9
Masayuki Mori, Kenji Sakata, Junichiro Yokawa, Chiaki Nakanishi, Hirofumi Okada, Masaya Shimojima, Shohei Yoshida, Tsuyoshi Yoshimuta, Kenshi Hayashi, Masakazu Yamagishi, Masa-Aki Kawashiri
OBJECTIVES: This study investigated the application of a novel enhanced device to retrieval of deployed stents in a porcine coronary model. BACKGROUND: Recurrence of in-stent restenosis and stent thrombosis still remains to be resolved. Under these conditions, it is sometimes necessary to retrieve malfunctional stents responsible for thrombosis. However, few data exist regarding the feasibility and safety of retrieval device use in previously deployed coronary stents...
August 21, 2017: Journal of Interventional Cardiology
https://www.readbyqxmd.com/read/28715949/contrast-enhanced-ultrasound-for-assessing-renal-perfusion-impairment-and-predicting-acute-kidney-injury-to-chronic-kidney-disease-progression
#10
Wei Cao, Shuang Cui, Li Yang, Chunyi Wu, Jian Liu, Fang Yang, Youhua Liu, Jianping Bin, Fan Fan Hou
AIMS: Acute kidney injury (AKI) is increasingly recognized as a major risk factor leading to progression to chronic kidney disease (CKD). However, the diagnostic tools for predicting AKI to CKD progression are particularly lacking. Here, we tested the utility of contrast-enhanced ultrasound (CEUS) for predicting progression to CKD after AKI by using both mild (20-min) and severe (45-min) bilateral renal ischemia-reperfusion injury mice. RESULTS: Renal perfusion measured by CEUS reduced to 25% ± 7% and 14% ± 6% of the pre-ischemic levels in mild and severe AKI 1 h after ischemia (p < 0...
December 10, 2017: Antioxidants & Redox Signaling
https://www.readbyqxmd.com/read/28679248/ultrasound-field-characterization-using-synthetic-schlieren-tomography
#11
Aki Pulkkinen, Jarkko J Leskinen, Aimo Tiihonen
Synthetic schlieren imaging, also known as background oriented schlieren imaging, is used to determine the acoustical field of a focused ultrasound transducer operating at 1.01 MHz frequency with peak pressure amplitude of 0.97 MPa. The measurement setup is composed of a commercial off-the-shelf digital single-lens reflex (DSLR) camera with an ordinary objective, a high power light-emitting diode driven in pulsating mode, water tank, ultrasound transducer, rotation stage, and driving electronics. Measurements are performed in tomographic fashion by rotating the ultrasound transducer within the water tank and photographing an imaged target behind the ultrasound field...
June 2017: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/28595190/nonpharmacological-biomechanical-approaches-to-control-inflammation-in-acute-kidney-injury
#12
Shinji Tanaka, Tsuyoshi Inoue, John A Hossack, Mark D Okusa
Inflammation is broadly recognized as an important factor in the pathogenesis of acute kidney injury (AKI), but pharmacological approaches to alleviate inflammation in AKI have been without success in clinical trials. Neuromodulation by nonpharmacological methods is emerging as a novel therapeutic strategy to treat inflammatory diseases. Recently, our group and others have demonstrated that vagus nerve stimulation and pulsed ultrasound ameliorated inflammation via the cholinergic anti-inflammatory pathway (CAP) in various animal models, including renal ischemia-reperfusion injury...
June 9, 2017: Nephron
https://www.readbyqxmd.com/read/28515369/effect-of-reverse-vessel-remodeling-on-regression-of-coronary-atherosclerosis-in-patients-treated-with-aggressive-lipid-and-blood-pressure-lowering-therapy%C3%A3-insight-from-million-study
#13
Tadatsugu Gamou, Kenji Sakata, Hayato Tada, Tetsuo Konno, Kenshi Hayashi, Hidekazu Ino, Masakazu Yamagishi, Masa-Aki Kawashiri
BACKGROUND: The MILLION study, a prospective randomized multicenter study, revealed that lipid and blood pressure (BP)-lowering therapy resulted in regression of coronary plaque as determined by intravascular ultrasound (IVUS). In the present study we performed additional analysis to investigate the associated factors with regression of coronary plaque.Methods and Results:We investigated serial 3D IVUS images from 68 patients in the MILLION study. Standard IVUS parameters were assessed at both baseline and follow-up (18-24 months)...
September 25, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28382533/quantified-kidney-echogenicity-in-mice-with-renal-ischemia-reperfusion-injury-evaluation-as-a-noninvasive-biomarker-of-acute-kidney-injury
#14
Shinya Murata, Noriyuki Sugiyama, Kentaro Maemura, Yoshinori Otsuki
The purpose is to evaluate quantified kidney echogenicity as a biomarker for the early diagnosis of acute kidney injury (AKI) and predicting progression to chronic kidney disease (CKD) in a mouse model of ischemia-reperfusion injury (IRI). Two separate protocols of murine models of IRI were used: (1) 10, 30, and 40 min of bilateral ischemia duration and (2) 45 and 60 min of unilateral ischemia duration. Renal echogenicity was measured with ultrasound and compared with serum creatinine or urine neutrophil gelatinase-associated lipocalin (NGAL) at various timepoints after IRI...
September 2017: Medical Molecular Morphology
https://www.readbyqxmd.com/read/28116780/r1-autonomic-nervous-system-in-acute-kidney-injury
#15
REVIEW
Dagmara Hering, Pawel J Winklewski
Acute kidney injury (AKI) is a rapid loss of kidney function resulting in accumulation of end metabolic products and associated abnormalities in fluid, electrolyte and acid-base homeostasis. The pathophysiology of AKI is complex and multifactorial involving numerous vascular, tubular and inflammatory pathways. Neurohumoral activation with heightened activity of the sympathetic nervous system and renin-angiotensin-aldosterone system play a critical role in this scenario. Inflammation and/or local renal ischaemia are underlying mechanisms triggering renal tissue hypoxia and resultant renal microcirculation dysfunction; a common feature of AKI occurring in numerous clinical conditions leading to a high morbidity and mortality rate...
February 2017: Clinical and Experimental Pharmacology & Physiology
https://www.readbyqxmd.com/read/27965714/doppler-ultrasound-in-kidney-diseases-a-key-parameter-in-clinical-long-term-follow-up
#16
REVIEW
Leonardo Spatola, Simeone Andrulli
Doppler ultrasound has been extensively used in detecting reno-vascular diseases, showing to be a non-invasive, safe, low cost and repeatable tool. The Renal Resistive Index (RRI) [(peak systolic velocity - end diastolic velocity)/peak systolic velocity] is a semi-quantitative index derived by Doppler evaluation of renal vascular bed. Normally RRI is in the range of 0.47-0.70, it increases with aging and, usually, it shows a difference between the two kidneys less than 5-8 %. RRI is an important prognostic marker in chronic kidney diseases (CKD), both in diabetic and non-diabetic kidney diseases, because, in longitudinal prospective studies, it significantly correlated with hemodynamic (ABPM, SBP, DBP, pulse pressure) and histopathological parameters (glomerular sclerosis, arteriolosclerosis, interstitial fibrosis/tubular atrophy, interstitial infiltration)...
December 2016: Journal of Ultrasound
https://www.readbyqxmd.com/read/27895448/neonatal-acute-kidney-injury-following-valsartan-exposure-in-utero-report-of-two-cases
#17
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/27779134/a-numerical-study-on-the-oblique-focus-in-mr-guided-transcranial-focused-ultrasound
#18
Alec Hughes, Yuexi Huang, Aki Pulkkinen, Michael L Schwartz, Andres M Lozano, Kullervo Hynynen
Recent clinical data showing thermal lesions from treatments of essential tremor using MR-guided transcranial focused ultrasound shows that in many cases the focus is oblique to the main axis of the phased array. The potential for this obliquity to extend the focus into lateral regions of the brain has led to speculation as to the cause of the oblique focus, and whether it is possible to realign the focus. Numerical simulations were performed on clinical export data to analyze the causes of the oblique focus and determine methods for its correction...
November 21, 2016: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/27773550/association-between-rice-bread-and-noodle-intake-and-the-prevalence-of-non-alcoholic-fatty-liver-disease-in-japanese-middle-aged-men-and-women
#19
Ryoko Tajima, Takeshi Kimura, Ayaka Enomoto, Kaede Yanoshita, Aki Saito, Satomi Kobayashi, Katsunori Masuda, Kaoruko Iida
BACKGROUND & AIMS: Prevention of non-alcoholic fatty liver disease (NAFLD) through lifestyle modification is an important public health issue. Carbohydrate intake from soft drinks has received particular interest. Owing to differences in dietary habits, however, major contributors to the intake of dietary carbohydrates, such as rice, bread, and noodles, might have more influence on NAFLD prevalence in East Asian countries than consumption of soft drinks. We examined the relationship of the intake of rice, bread, and noodles, as well as overall carbohydrate intake, with NAFLD prevalence in middle-aged Japanese...
October 8, 2016: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/27743614/reliability-of-bedside-ultrasound-for-measurement-of-quadriceps-muscle-thickness-in-critically-ill-patients-with-acute-kidney-injury
#20
Alice Sabatino, Giuseppe Regolisti, Laura Bozzoli, Filippo Fani, Riccardo Antoniotti, Umberto Maggiore, Enrico Fiaccadori
MAIN PROBLEM: In patients with Acute Kidney Injury there is a lack of nutritional variables that can assess nutritional status, more specifically lean body mass (LBM) and skeletal muscle mass, at the individual level. In this clinical setting, ultrasound (US)) of the quadriceps femoris could represent a widely available, non-invasive, affordable, and reliable tool to evaluate skeletal muscle. METHODS: We performed a cross-sectional observational study in adult critically ill patients with KDIGO stage 3 AKI on dialysis...
October 1, 2016: Clinical Nutrition: Official Journal of the European Society of Parenteral and Enteral Nutrition
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