Surveillance for hemodialysis access stenosis: usefulness of ultrasound vector volume flow.

CONCLUSIONS: VFI is an acceptable method for volume flow estimation and volume flow changes over time in AVFs. PMID: 27646927 [PubMed - as supplied by publisher]
Source: The Journal of Vascular Access - Category: Surgery Tags: J Vasc Access Source Type: research

Related Links:

Last week, Sonavex, a Baltimore-based medical device company, announced receipt of a $3M Phase IIB Small Business Innovation Research (SBIR) grant for prospective clinical studies and ongoing research and development of its EchoMark and EchoSure devi...
Source: Medgadget - Category: Medical Devices Authors: Tags: Cardiology Surgery Vascular Surgery Source Type: blogs
This study is an observational and cross-sectional study including 62 patients with normotensive chronic hemodialysis using no antihypertensive drugs. A series of measurements including ambulatory blood pressure monitoring, left ventricular mass index by echocardiography, common carotid artery intima-media thickness by ultrasound, and body fluids by bioimpedance analysis were conducted for all subjects. Results: The patients were divided into two groups as dippers and nondippers according to their ambulatory blood pressure monitoring results. Average 48 h systolic, diastolic, and mean arterial blood pressure and noctur...
Source: International Journal of Nephrology - Category: Urology & Nephrology Tags: Int J Nephrol Source Type: research
ConclusionPreviously dialysis was standard, currently it is oriented by efficiency criteria. The ascension of the PA paralyzial is a paradox and several factors are incriminated: water overload, fast UF, short sessions, arterial rigidity, anemia. The use of an ideal dry weight and long hemodialysis allows a Significant improvement in blood pressure control through better control of extracellular volume (ECV). In addition, there is a lack of morbidity and mortality studies among dialysis patients as well as a clear definition of blood pressure targets in this group of patients forgotten by the studies.
Source: Archives of Cardiovascular Diseases Supplements - Category: Cardiology Source Type: research
Authors: Niyyar VD Abstract Sonography is increasingly being used by nephrologists and the field of dialysis access is no exception. Advances in technology have allowed the addition of this universally available, portable, non-invasive tool to the nephrologist's armamentarium, which provides information on both morphology and physiology without the need for contrast or radiation. Ultrasound may be used across the spectrum of dialysis access, including central venous catheter placements, vascular mapping, regional anesthesia, creation, maintenance and assessment of hemodialysis access as well as assessment of the ab...
Source: The Journal of Vascular Access - Category: Surgery Tags: J Vasc Access Source Type: research
Authors: Sato T, Otsuka Y, Kikkawa Y, Iwasaki Y, Fukagawa M Abstract Vascular access failure, such as recurrent stenosis and thrombosis, is a major concern in patients with end-stage kidney disease. Neointimal hyperplasia development at the anastomosis site of outflow vessels is a primal cause for recurrent vascular access failure. We previously shed some lights into a role of vitamin D, which exerts a protective effect against neointimal hyperplasia formation. Virtual histology, derived from intravascular ultrasound technology, provides novel insights into plaque composition analysis in atherosclerotic diseases. H...
Source: The Journal of Vascular Access - Category: Surgery Tags: J Vasc Access Source Type: research
AbstractPurpose It has been suggested that advanced glycation end products (AGEs) are involved in atherogenesis, vascular calcification and remodeling, including neointimal hyperplasia, in renal and non-renal patients. Their relevance for arteriovenous fistula (AVF) function has been poorly studied to date, with only one clinical study addressing the issue of thrombosis of vascular access in relation to AGEs in dialysis patients. We aimed to evaluate the relationship between serum pentosidine and AVF morphology and function.MethodsEighty-eighth hemodialysis patients with patent native AVF were included. Ultrasound examin...
Source: International Urology and Nephrology - Category: Urology & Nephrology Source Type: research
Abstract Non-tunneled hemodialysis catheter (NTHC) insertion is an essential skill for nephrology practice and remains a requirement of training. However, improper insertion technique can increase the risk of potentially fatal infectious and mechanical complications. Evidence-based strategies can reduce the rates of such complications and should be integrated into practice and training. Ultrasound (US) guidance should routinely be used for NTHC insertion at the femoral and internal jugular sites (with avoidance of the subclavian site). Nephrologists should receive proper training in the use of US for line insertio...
Source: Seminars in Dialysis - Category: Urology & Nephrology Authors: Tags: Semin Dial Source Type: research
ConclusionsUsing modern-day techniques, the incidence of mechanical complications during placement of tunneled catheters can be diminished. Hence, routine use of ultrasound guidance for insertion of tunneled dialysis catheters should become the standard of care.
Source: Journal of Vascular Surgery: Venous and Lymphatic Disorders - Category: Surgery Source Type: research
The objectives of this study are (1) to determine the reliability of clinical signs and symptoms for volume assessment, (2) to compare lung ultrasound with High Resolution Computed Tomography (HRCT) chest-A noninvasive gold standard tool for detecting pulmonary congestion and with inferior vena cava diameter (IVCD) – another time-tested volume assessment method, and (3) to analyze if lung ultrasound could detect dialysis induced fluid status variations. The cross-sectional study involves 50 patients on maintenance hemodialysis. Lung ultrasound for B line estimation and ultrasonographic measurement of IVCD performed b...
Source: Indian Journal of Nephrology - Category: Urology & Nephrology Authors: Source Type: research
Chronic fluid over-hydration is common in dialysis patients. It is associated with mortality and cardiovascular events. Optimal methods for adjusting fluid volume status and ideal dry weight remain uncertain. The purpose of this study was to evaluate the usefulness of ultrasound in quantifying body water. In 35 hemodialysis patients, we performed ultrasound of the chest, pre-tibial skin tissue thickness (TT), heart and inferior vena cava (IVC) before and after dialysis. We compared B-line scores of lungs, IVC diameters and cardiac functions in pre-dialysis and post-dialysis groups.
Source: Ultrasound in Medicine and Biology - Category: Radiology Authors: Tags: Original Contribution Source Type: research
More News: Dialysis | Hemodialysis | Medical Ethics | Statistics | Students | Study | Surgery | Ultrasound | Universities & Medical Training