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Potier Jacky J Dialysis Unit, Centre Hospitalier, Cherbourg, - - 2013
We examined the hypothesis that mixed-dilution online hemodiafiltration (MIXED) rather than predilution online hemodiafiltration (PRE) could enable patients with low blood flow rate (Qb) to benefit from advantages of convective therapies. Thirty-eight patients were included in a prospective, randomized, crossover and multicenter study conducted with a view to comparing the ...
Shreay Sanatan - - 2012
PURPOSE: Anemia in cancer patients can be treated with red blood cell (RBC) transfusions. The patient burden associated with a treatment in terms of total time spent is an important factor to consider when measuring the benefits and challenges of a therapy. This study estimates the time-related patient burden associated ...
Bala Miklosh - - 2012
INTRODUCTION: Knowledge of patterns of blood use in the care of mass casualty settings is important for preparedness of medical centre resources and for maximising survival when blood supplies are limited. Our objectives were to review of our experience with the use of blood products and define the utilisation of ...
Ugawa Toyomu - - 2012
The functioning of an arteriovenous fistula (AVF) used for vascular access during hemodialysis has been assessed mainly by dilution methods. Although these techniques indicate the immediate recirculation rate, the results obtained may not correlate with Kt/V. In contrast, the clearance gap (CL-Gap) method provides the total recirculation rate per dialysis ...
de Oliveira Andresa Pereira - - 2012
The aim of this study was to compare the techniques of indirect immunofluorescence assay (IFA) and flow cytometry to clinical and laboratorial evaluation of patients before and after clinical cure and to evaluate the applicability of flow cytometry in post-therapeutic monitoring of patients with american tegumentary leishmaniasis (ATL). Sera from ...
Gitlin Matthew - - 2012
ABSTRACT: BACKGROUND: Payments for red blood cell (RBC) transfusions are separate from US Medicare bundled payments for dialysis-related services and medications. Our objective was to examine the economic burden for payers when chronic dialysis patients receive outpatient RBC transfusions. METHODS: Using Truven Health MarketScan(R) data (1/1/02-10/31/10) in this retrospective micro-costing ...
Robinson Paul M - - 2012
Patients undergoing primary total hip arthroplasty (THA) have historically been over-transfused. In a district general hospital setting, the authors observed a significant downward trend in blood transfusion requirements in these patients over 6 years after a change in transfusion policy. The purpose of this study was to retrospectively analyze the ...
Ghasemi Hassan - - 2012
Introduction. Patients with end-stage renal disease who receive hemodialysis are prone to visual disturbances. The aim of this study was to evaluate the effects of metabolic changes on visual parameters during hemodialysis sessions. Materials and Methods. Demographic information including history of underlying diseases, wearing eyeglasses, any ocular diseases or surgeries, ...
Towle Erica L - - 2012
Assessment of the vasculature is critical for overall success in cranial vascular neurological surgery procedures. Although several methods of monitoring cortical perfusion intraoperatively are available, not all are appropriate or convenient in a surgical environment. Recently, 2 optical methods of care have emerged that are able to obtain high spatial ...
Gong Dehua - - 2012
To report endotoxemia presented in a case with multiple myeloma (MM) treated by high cutoff hemodialysis (HCO-HD) being prevented by using ultrapure dialysate. A female inpatient with MM received six times HCO-HD (HCO 2100 dialyzer) within 3 weeks after initiation of a chemotherapy based on vincristine + epirubicin + dexamethasone protocol. Conventional dialysate was ...
Van Canneyt Koen - - 2012
Extended nocturnal home hemodialysis has gained renewed interest. However, no removal data for single/double needle (lumen) (SL and DL, respectively) or for low/high blood flow in extended dialysis are available. Therefore, we studied dialysis adequacy in different nocturnal home hemodialysis strategies. Coupling a kinetic with a dialyzer model, we calculated ...
Ulusoy Sukru - - 2012
Hemodialysis (HD) adequacy requires monitoring in line with standards and at appropriate intervals. However, the use of inappropriate or incorrectly applied techniques in the determination of HD adequacy can lead to highly unfortunate results. This study was intended to identify the path to a solution by determining how far HD ...
Wu Tsung-Feng - - 2012
We demonstrated a unique optofluidic lab-on-a-chip device that can measure optically encoded forward scattering signals. From the design of the spatial pattern, we can measure the position and velocity of each cell in the flow and generate a 2-D cell distribution plot over the cross section of the channel. Moreover, ...
Santarcangelo Enrica L - - 2012
Abstract Mean values and the spectral variability of heart rate (HRV), blood pressure, and skin blood flow were studied in high and low hypnotizable subjects during simple relaxation. Similar subjective relaxation was reported by highs and lows. A parasympathetic prevalence (indicated by a higher High-Frequency component of HRV and a ...
Khoshrang Hossein - - 2013
Blood transfusion is an important part of the medical care service. As there has not been a regional study about blood requests for operations, this study was done to assess blood ordering for various types of elective urological surgery. In a descriptive, retrospective, cross-sectional study, blood requests for all patients ...
Engel Scott J SJ Sarasota Plastic Surgery Center, FL, - - 2012
The second part of the authors' study on operating room fires analyzes the construct of the nasal cannula used during facial surgery for patients under conscious sedation with supplemental oxygen. This prospective study compares two common styles of nasal cannulas with a nasopharyngeal system described in their first report. Twenty ...
Kim Yangho - - 2012
INTRODUCTION: We present data from the Korean National Health and Nutrition Examination Survey 2008-2010 on the association between blood lead and hemoglobin levels in a representative sample of the adult South Korean population. METHODS: The analysis was restricted to participants ≥20 years of age who completed the health examination survey, including ...
Baskurt Oguz K - - 2012
It is well known that hemostatic-thrombotic mechanisms are influenced by hemodynamic factors, such as shear forces affecting platelets or red blood cell aggregation, in turn affecting flow in stenotic regions. Endothelial cell function is also significantly influenced by shear forces acting on the vessel wall. Further, the distribution of shear ...
Hu Lingzhi L Department of Physics, Washington University, St. Louis, Missouri, - - 2013
We present a novel blood flow-enhanced-saturation-recovery (BESR) sequence, which allows rapid in vivo T1 measurement of blood for both (1)H and (19)F nuclei. BESR sequence is achieved by combining homogeneous spin preparation and time-of-flight image acquisition and therefore preserves high time efficiency and signal-to-noise ratio for (19)F imaging of circulating ...
Soleimanifard Sahar S Department of Electrical and Computer Engineering, Johns Hopkins University, Baltimore, Maryland, - - 2013
In coronary magnetic resonance angiography, a magnetization-preparation scheme for T2-weighting (T2Prep) is widely used to enhance contrast between the coronary blood-pool and the myocardium. This prepulse is commonly applied without spatial selection to minimize flow sensitivity, but the nonselective implementation results in a reduced magnetization of the in-flowing blood and ...
Wagner Marlies - - 2012
PURPOSE: To use T2'-mapping together with Pulsed Arterial Spin Labeling (PASL) providing quantitative information of deoxygenation level and cerebral blood flow (CBF) in the cerebral gray matter to obtain simultaneous information about the cerebral oxygen metabolism and the resulting cerebral vasoreactivity under normoxic and hyperoxic conditions. MATERIALS AND METHODS: Twelve ...
Shenkman Boris - - 2012
The relationship between tissue-type plasminogen activator (tPA) and urokinase-type plasminogen activator (uPA) function is not fully understood. The aim of this study was to compare in vitro the fibrinolytic activity of tPA and uPA and evaluate their possible interaction. Blood coagulation and fibrinolysis were conducted by rotation thromboelastometry, whereas blood ...
Garaci Francesco G - - 2012
Purpose:To investigate the relationship between chronic cerebrospinal venous insufficiency (CCSVI) and cerebral hemodynamic parameters and to disclose any possible involvement in the pathophysiology of multiple sclerosis (MS).Materials and Methods:The study was approved by the institutional review board, and written informed consent was obtained from all participants. The diagnosis of CCSVI ...
Pizov R - - 2012
BACKGROUND: /st>Variation in arterial pressure and plethysmographic waveforms has been shown to be predictors of cardiac output response to fluid challenge. The objective of this study was to evaluate the ability of arterial and plethysmographic waveform variables to predict hypotension during blood loss. METHODS: /st>Patients undergoing autologous haemodilution were studied. ...
Spector Sheldon Laurence - - 2012
Introduction. "Eosinophilic asthma" refers to an asthma phenotype characterized by predominance of eosinophils in the bronchial airways and corticosteroid responsiveness. Recent clinical trials of eosinophil-blocking agents have utilized a blood eosinophil count of 300 or 400 eosinophils/mm(3) or higher to identify subjects with moderate to severe asthma. We observed multiple ...
Lott Darline A - - 2012
Analytical base flow separation techniques are often used to determine the base flow contribution to total stream flow. Most analytical methods derive base flow from discharge records alone without using basin-specific variables other than basin area. This paper derives a power function for estimating base flow, the form being aQ(b) ...
Lee Gil Jun - - 2012
Oxygen has been widely used for chronic obstructive pulmonary disease (COPD) patients because long-term oxygen therapy (LTOT) can improve survival duration of COPD patients with severe hypoxemia. The typical oxygen delivery methods used for LTOT are continuous flow oxygen (CFO) and demand oxygen delivery (DOD). Currently, DOD is preferred to ...
Atlas Glen - - 2012
The esophageal Doppler monitor (EDM) is a minimally-invasive hemodynamic device which evaluates both cardiac output (CO), and fluid status, by estimating stroke volume (SV) and calculating heart rate (HR). The measurement of these parameters is based upon a continuous and accurate approximation of distal thoracic aortic blood flow. Furthermore, the ...
Magnussen K - - 2012
Background and Objectives  The literature contains little on the prevalence and causes of high predonation haemoglobin levels among blood donors. This study aimed to characterize and develop an algorithm to manage would-be donors with polycythaemia. Materials and Methods  Between November 2009 and November 2011, we offered haematology consultations to blood ...
Rajabi-Jagahrgh Ehsan E Mechanical Engineering Program, School of Dynamic Systems, University of Cincinnati, Cincinnati, Ohio, - - 2013
Arteriovenous fistula (AVF) nonmaturation is currently a significant clinical problem; however, the mechanisms responsible for this have remained unanswered. Previous work by our group and others has suggested that anatomical configuration and the corresponding hemodynamic endpoints could have an important role in AVF remodeling. Thus, our goal was to assess ...
Bächler Pablo - - 2012
OBJECTIVE: The purpose of this study was to analyze flow patterns in the pulmonary circulation of healthy volunteers by using 4D flow magnetic resonance imaging. MATERIALS AND METHODS: The study was approved by the local ethics committee and all subjects gave written informed consent. Eighteen volunteers underwent a 4D flow ...
Illies T - - 2012
BACKGROUND AND PURPOSE:4D MRA has been evolving as a noninvasive supplement for DSA. The purpose of this study was to evaluate the feasibility of a newly developed blood flow visualization technique for the classification of cerebral AVMs. We hypothesized that 4D-hMRA allows detection of different flow patterns within the nidus ...
Hitsumoto Takashi - - 2012
OBJECTIVES: Impairment of blood rheology has been reported to be associated with cardiovascular diseases. Recently, visible micro channel methods [micro channel array flow analyzer (MC-FAN)] have been developed to clinically evaluate blood rheology. The aim of this cross-sectional study is to clarify the factors important for impairment of blood rheology ...
Toth-Heyn Peter - - 2012
Sufficient organ blood flow of healthy newborn babies is maintained by relatively low systemic blood pressure. Premature infants are at an increased risk of systemic hypotension, often but not obviously, resulting in hypoperfusion of the cerebral, renal and intestinal vascular beds. Maintaining a stable blood pressure in preterm babies is ...
Ventura Walter - - 2012
OBJECTIVE: To explore the reliability of examining the external iliac artery (EIA) at 11+0 to 13+6 weeks of gestation with Doppler ultrasound and its relationship with maternal characteristics and uterine artery blood flow. STUDY DESIGN: Cross-sectional study of 451 pregnant women undergoing an ultrasound scan in the first trimester. Mean ...
Ercan Ertu Rul - - 2012
OBJECTIVE: Flow-mediated dilation (FMD) is used to evaluate endothelial functions. Computer-assisted analysis utilizing edge detection permits continuous measurements along the vessel wall. We have developed a new fully automated software program to allow accurate and reproducible measurement. METHODS: FMD has been measured and analyzed in 18 coronary artery disease (CAD) ...
Hutchison Joanna L JL School of Behavioral and Brain Sciences, University of Texas at Dallas, Richardson, TX 75080, - - 2013
The precise mechanisms that give rise to the blood-oxygen-level-dependent (BOLD) activation differences that accompany age-related cognitive slowing remain fundamentally unknown. We sought to isolate the origin of age-related BOLD changes by comparing blood-flow and oxygen-metabolic constituents of the BOLD response using dual-echo arterial spin labeling during visual stimulation and CO2 ...
Maunder C L - - 2012
OBJECTIVES: To assess the reliability of prothrombin time and activated partial thromboplastin time results generated from citrated whole blood samples following short-term storage at room temperature. METHODS: Clotting times were measured in blood samples from 40 dogs that showed a variety of clinical signs. Before measurement of prothrombin time and ...
Knobloch Verena - - 2012
Time-resolved three-dimensional flow measurements are limited by long acquisition times. Among the various acceleration techniques available, k-t methods have shown potential as they permit significant scan time reduction even with a single receive coil by exploiting spatiotemporal correlations. In this work, an extension of k-t principal component analysis is proposed ...
Detterich Jon J Division of Cardiology, Children's Hospital Los Angeles, California 90027, USA. - - 2013
Simple chronic transfusion therapy (CTT) is a mainstay for stroke prophylaxis in sickle cell anemia, but its effects on hemodynamics are poorly characterized. Transfusion improves oxygen-carrying capacity, reducing demands for high cardiac output. While transfusion decreases factors associated with vasoocclusion, including percent hemoglobin (Hb)S, reticulocyte count, and circulating cell-free Hb, ...
Stembirek J J Institute of Animal Physiology and Genetics CAS, v.v.i., Brno, Czech Republic. - - 2013
Many different surgical and non-surgical techniques are used for the treatment of temporomandibular joint (TMJ) hypermobility. One of these methods is autologous blood injection into the TMJ. The fate of the autologous blood used for treatment of recurring condylar dislocation is still not completely understood. The authors used 12 pigs ...
Grandahl Kasper - - 2012
International studies have shown blood lead at levels causing health concern in recreational indoor shooters. We hypothesized that Danish recreational indoor shooters would also have a high level of blood lead, and that this could be explained by shooting characteristics and the physical environment at the shooting range. This was ...
Sadeghian Mohammad Hadi - - 2012
BACKGROUND: The frequency of Human T lymphotropic Virus-1 (HTLV 1) is 2-3% in the general population and 0.7% in blood donors in northeast Iran. It is very important that we recognize the contributing factors in the pathogenesis of this virus. There are many reports that show that susceptibility to some ...
Massaú Aline - - 2012
This study investigates the frequency of Torque teno virus (TTV) infection in 150 blood donors and 77 patients requiring haemodialysis in southern Brazil. Plasma samples were screened for TTV DNA using polymerase chain reaction (PCR). The prevalences of TTV among blood donors and patients requiring haemodialysis were 73.3% and 68.8%, ...
Velden Joanne Van der - - 2012
ABSTRACT Background: Increases in blood vessel density and vascular area are now recognized as important features of remodeled airways in asthma. However, the time sequence for these vascular changes and whether they resolve in the absence of continued antigenic exposure is not well elucidated. The aim of the present study ...
Sørensen Henrik - - 2012
Perioperative optimization of spatially resolved near-infrared spectroscopy determined cerebral frontal lobe oxygenation (scO2) may reduce postoperative morbidity. Norepinephrine is routinely administered to maintain cerebral perfusion pressure and, thereby, cerebral blood flow, but norepinephrine reduces the scO2. We hypothesized that norepinephrine-induced reduction in scO2 is influenced by cutaneous vasoconstriction. Fifteen healthy ...
Granegger Marcus - - 2012
Estimation of instantaneous flow in rotary blood pumps (RBPs) is important for monitoring the interaction between heart and pump and eventually the ventricular function. Our group has reported an algorithm to derive ventricular contractility based on the maximum time derivative (dQ/dt(max) as a substitute for ventricular dP/dt(max) ) and pulsatility ...
He D - - 2012
What is believed to be the first fully integrated two-dimensional complementary metal oxide semiconductor (CMOS) imaging array for laser Doppler blood flow imaging is demonstrated. The sensor has 64×64 pixels and includes both analog and digital on-chip processing electronics. This offers several potential advantages over commercial sensors as the processing ...
Sobieski Michael A - - 2012
Mechanical circulatory assist devices that provide temporary support in heart failure patients are needed to enable recovery or provide a bridge to decision. Minimizing risk of blood damage (i.e., hemolysis) with these devices is critical, especially if the length of support needs to be extended. Hematologic responses of the RotaFlow ...
Koehn S - - 2012
The study aimed to examine 1) the validity of the nine-factor flow model in tennis competition; 2) differences in flow state between athletes who won or lost their competition match; 3) the link between flow and subjective performance; and 4) flow dimensions as predictors of performance outcome The sample consisted ...
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