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Marmarelis V Z VZ University of Southern California, Los Angeles, CA, USA, - - 2013
Previous studies have found that Alzheimer's disease (AD) impairs cerebral vascular function, even at early stages of the disease. This offers the prospect of a useful diagnostic method for AD, if cerebral vascular dysfunction can be quantified reliably within practical clinical constraints. We present a recently developed methodology that utilizes ...
Hollier Carly A - - 2013
This prospective study investigated the validity of arterialised-venous blood gases (AVBG) for estimating arterial carbon dioxide [Formula: see text] , pH and bicarbonate (HCO3(-)) in people with obesity hypoventilation syndrome (OHS). AVBGs were obtained from an upper limb vein, after heating the skin at 42-46°C. Arterial blood gas (ABG) and ...
Nicoll J - - 2013
INTRODUCTION: International neonatal resuscitation guidelines recommend that correct tube placement should be confirmed by clinical assessment and exhaled CO2 detection. Absence of exhaled CO2 after intubation suggests oesophageal intubation, non-aerated lungs, low tidal volume delivery, or low cardiac output. The relationship between changes in cardiac output and exhaled CO2 in ...
Marchesini Giorgio - - 2013
BACKGROUND: Ruminal acidosis is responsible for the onset of different pathologies in dairy and feedlot cattle, but there are major difficulties in the diagnosis. This study modelled the data obtained from various blood variables to identify those that could indicate the severity of ruminal acidosis. Six heifers were fed three ...
Waugh Jonathan B - - 2013
Purpose:Therapeutic gases and other modalities delivered by inhalation may affect the accuracy of capnographic measurements in two ways. First is the specificity of the measurement of CO2 within the device and second is the dilution effect of supplemental gases in the ambient air during CO2 sampling by the device. Our ...
Kreyer Stefan - - 2013
BACKGROUND:: Lung-protective mechanical ventilation with low tidal volumes (VT) is often associated with hypercapnia (HC), which may be unacceptable in patients with brain injury. CO2 removal using a percutaneous extracorporeal lung assist (pECLA) enables normocapnia despite low VT, but its effects on regional cerebral blood flow (rCBF) remain ambiguous. We ...
Tancredi Felipe B FB Département de Physiologie, Institut de Génie Biomédical, Université de Montréal, Montreal, Quebec, Canada. - - 2013
Stimulation of cerebral vasculature using hypercapnia has been widely used to study cerebral vascular reactivity (CVR), which can be expressed as the quantitative change in cerebral blood flow (CBF) per mm Hg change in end-tidal partial pressure of CO2 (PETCO2). We investigate whether different respiratory manipulations, with arterial spin labeling used ...
Tytgat Stefaan H A J - - 2013
BACKGROUND: Little is known about the direct effect of pneumoperitoneum (PP) on microcirculation and its influence on the quality of tissue perfusion. This study aimed to investigate the intraoperative effects of carbon dioxide (CO2) gas PP on microcirculation density and perfusion in neonates receiving laparoscopic surgery for hypertrophic pyloric stenosis. ...
Strang C M - - 2013
Background: Pneumoperitoneum (PP) by CO2-insufflation causes atelectasis however with maintained or even improved oxygenation. We studied the effect of abdominal insufflation by carbon dioxide (CO2) and air on gas exchange during PP. Methods: 27 anesthetized pigs were studied during PP with insufflations to 12 mmHg by either 1/ CO2, 2/ ...
Raby Karine - - 2013
Experiments were performed to remove nitrogen as ammonium in biotrickling filters (BTFs) treating synthetic swine manure. Two BTFs packed with polypropylene spheres and ceramic beads were used. BTFs were continuously fed, and leachate obtained was recirculated at different flow rates in the range from 0 to 1.5 L min(-1). When ...
Mutch W Alan C - - 2013
BACKGROUND: Monitoring cerebral saturation is increasingly seen as an aid to management of patients in the operating room and in neurocritical care. How best to manipulate cerebral saturation is not fully known. We examined cerebral saturation with graded changes in carbon dioxide tension while isoxic and with graded changes in ...
Regan Rosemary E - - 2013
The middle cerebral artery supplies long end-artery branches to perfuse the deep white matter and shorter peripheral branches to perfuse cortical and subcortical tissues. A generalized vasodilatory stimulus such as carbon dioxide not only results in an increase in flow to these various tissue beds but also redistribution among them. ...
Cain John R JR Wolfson Molecular Imaging Centre, Cancer and Enabling Sciences, University of Manchester, 23 Palatine Road, Withington, Manchester M20 3LJ, - - 2013
Purpose. To compare a semiopen breathing circuit with a non-rebreathing (Hudson mask) for MRI experiments involving gas delivery. Methods and Materials. Cerebral blood flow (CBF) was measured by quantitative phase contrast angiography of the internal carotid and basilar arteries in 18 volunteers (20-31 years). In 8 subjects, gases were delivered ...
Poublanc Julien J Department of Medical Imaging, Toronto Western Hospital, Toronto, Ont., - - 2013
Blood oxygen level-dependent (BOLD) magnetic resonance imaging (MRI) during manipulation of inhaled carbon dioxide (CO2) can be used to measure cerebrovascular reactivity (CVR) and map regions of exhausted cerebrovascular reserve. These regions exhibit a reduced or negative BOLD response to inhaled CO2. In this study, we sought to clarify the ...
Takahashi Hiroaki - - 2012
The aim of this study was to verify the correlation between mean blur rate (MBR) obtained with CCD-equipped laser speckle flowgraphy (LSFG) and capillary blood flow (CBF) obtained by the hydrogen gas clearance method in rabbit optic nerve head (ONH). Using Japanese white rabbits under systemic anesthesia, a hydrogen electrode ...
Cullen Jonathan M - - 2012
Our society is addicted to steel. Global demand for steel has risen to 1.4 billion tonnes a year and is set to at least double by 2050, while the steel industry generates nearly a tenth of the world's energy related CO2 emissions. Meeting our 2050 climate change targets would require ...
Bjerregård Asger - - 2012
Measurement of the arterial carbon dioxide (PaCO2) is an established part of the monitoring of mechanically ventilated patients. Other ways to get information about carbon dioxide in the patient are measurement of end-tidal carbon dioxide (PETCO2) and transcutaneous carbon dioxide (PTCCO2). Carbon dioxide in the blood and cerebral tissue has ...
Wearden Peter D - - 2012
The objective of this study was to demonstrate the safety and performance of a unique extracorporeal carbon dioxide removal system (Hemolung, ALung Technologies, Pittsburgh, PA) which incorporates active mixing to improve gas exchange efficiency, reduce exposure of blood to the circuit, and provide partial respiratory support at dialysis-like settings. An ...
Wiersum-Osselton J C - - 2012
Background and objectives  It has been suggested that the rate of reported transfusion reactions is positively correlated with safety of the transfusion chain in a hospital. We evaluated this assumption in the Transfusion Reactions in Patients Dutch National Hemovigilance Office database taking reported incorrect blood component transfused as a proxy ...
Vamvakas Eleftherios C - - 2012
The combination of patient blood management (PBM) modalities and multicomponent apheresis permits us to administer even safer transfusions than those using the "safer-than-ever" blood components distributed in the beginning of the 21st century. PBM identifies a patient at risk of transfusion and formulates a multidisciplinary and multimodal-yet individualized-plan for reducing ...
Gregory Shaun David - - 2012
Rotary ventricular assist device (VAD) support of the cardiovascular system is susceptible to suction events due to the limited preload sensitivity of these devices. This may be of particular concern with rotary biventricular support (BiVAD) where the native, flow balancing Starling response is diminished in both ventricles. The reliability of ...
Jeon Young-Chul - - 2012
Carbon coils could be synthesized using C2H2/H2 as source gases and SF6 as an incorporated additive gas under the thermal chemical vapor deposition system. The nickel catalyst layer deposition and then hydrogen plasma pretreatment were performed prior to the carbon coils deposition reaction. The flow rate and the injection time ...
Culibrk B - - 2012
Background and Objectives  There is no automated, accurate assay for the enumeration of residual red blood cells (rRBCs) in non-RBC components for transfusion, despite the potential risk of allo-immunization when mismatched components are transfused. Materials and Methods  The automated ADVIA 120 cerebrospinal fluid (CSF) assay, which is approved to count ...
Bonnet M - - 2012
Refractory hypercapnia with severe acidosis appeared in a 67-year-old man who presented with lung fibrosis and a left pneumothorax as delayed complications of bleomycin chemotherapy for advanced grade lymphoma. Due to failure of noninvasive ventilation using a high-flow nasal cannula oxygen system, the patient was mechanically ventilated with two ventilators ...
Mims Meryl C - - 2012
The hydrologic regime is regarded as the primary driver of freshwater ecosystems, structuring the physical habitat template, providing connectivity, framing biotic interactions, and ultimately selecting for specific life histories of aquatic organisms. In the present study, we tested ecological theory predicting directional relationships between major dimensions of the flow regime ...
Piro Patrizia - - 2012
Combined wastewater collection systems continue to serve as a common urban conveyance method in urban areas of Europe and older urban areas of the United States. This study uses combined wastewater collection system monitoring data from the urbanizing Liguori catchment and channel in Cosenza (Italy) to illustrate event-based delivery and ...
Hassall Oliver W OW Centre for Geographic Medicine Research, Kenya Medical Research Institute, Kenya. - - 2012
Severe anemia requiring blood transfusion is common in hospitalized young children in sub-Saharan Africa but blood is often in short supply. Umbilical cord blood may be a useful source of blood if microbiologic safety concerns can be addressed. Cord blood, donated on the labor ward at the provincial hospital in ...
Drew Richard J - - 2011
Laboratory methods of diagnosis were examined for 266 children with invasive meningococcal disease (IMD). Seventy-five (36%) of 207 cases with bloodstream infection (BSI) had both positive blood culture and blood meningococcal PCR, 130 (63%) negative blood culture and positive blood PCR, and 2 (1%) had positive blood culture and negative ...
Patel Robin - - 2011
Using data from 23,313 patients, we assessed whether two blood culture sets of three bottles per set would detect more pathogens than two sets of two bottles per set and achieve similar sensitivity to collecting three sets of two bottles per set. We also compared the yield of aerobic and ...
Samuel Linoj P - - 2011
The VersaTREK(®) microbial detection system offers 2 media formulations, an aerobic and an anaerobic bottle available in a 40-mL direct draw format and an 80-mL format. The 40-mL EZ Draw(®) bottle can be inoculated with a maximum volume of 5 mL, while the REDOX 80-mL bottle accommodates a 10-mL volume. ...
Zackrisson Ulf - - 2011
OBJECTIVE: We utilized methods for intravital microscopy and microcirculation measurements to study changes during ovulation. STUDY DESIGN: Immature gonadotrophin-primed rats were laparotomized and one ovary was examined for morphological alterations during a 3h period (covering a period from 1h before to 27h after hCG) through water-immersion lenses (maximum magnification 812×). ...
Elmashad Ashraf I - - 2011
To evaluate the effect of laparoscopic ovarian drilling (LOD) on plasma levels of anti-Müllerian hormone (AMH) and ovarian stromal blood flow changes, by using three-dimensional power Doppler ultrasonography, in polycystic ovary syndrome (PCOS). Prospective controlled study. Taiba hospital, Kuwait. Twenty-three anovulatory clomiphene citrate (CC)-resistant women with PCOS and 20 fertile ...
Neglia G - - 2011
The aim of this study was to evaluate the effect of cloprostenol administration on the blood flow of pre-ovulatory follicle (PF) and corpus luteum (CL), progesterone secretion and pregnancy outcome in buffaloes subjected to AI. The trial was performed on 75 Italian buffaloes at 182 ± 8 days in milk. Synchronized animals were ...
Keator Christopher S CS Division of Reproductive Sciences, Oregon National Primate Research Center, Oregon Health and Science University, Beaverton, Oregon 97006-3448, USA. - - 2011
To use contrast-enhanced ultrasound (CEU) to quantify blood flow in the macaque uterus during early pregnancy. Prospective nonhuman primate study. Oregon National Primate Research Center. Naturally cycling female rhesus macaques (Macaca mulatta). Female macaques were mated on days 11-14 of the cycle. Females were then imaged by CEU and Doppler ...
Shrestha H K - - 2011
Acute changes in circulating progesterone concentration and luteal blood flow in heifers after a conventional dose of prostaglandin F(2α) (PGF; 25mg dinoprost, i.m.) were compared between the early luteal phase (Day 3) and midluteal phase (Day 10; Day 0=ovulation), using four groups (Day-3 control, Day-3 PGF, Day-10 control, and Day-10 ...
Takahashi Noriyo - - 2011
The study was designed to assess the effects of local heat (LH) application on postganglionic muscle sympathetic nerve activity (MSNA) measured by microneurography in healthy men. In the first protocol, MSNA of the left peroneal nerve, blood pressure (BP), heart rate (HR), and skin temperature of the shin (TSK) were ...
Younis Johnny S - - 2011
OBJECTIVE: To gain insight into the ovarian stromal blood flow in women with polycystic ovary syndrome (PCOS) as compared with women with normal ovulation, good ovarian reserve, and infertility and to evaluate the role of stromal flow in these patients to predict clinical pregnancy in an assisted reproductive technologies setting. ...
Sehi Mitra - - 2011
Acta Ophthalmol. 2011: 89: e1-e11 ABSTRACT.: Many studies have suggested an association between blood flow dysregulation and glaucomatous damage to the optic nerve. Confocal scanning laser Doppler flowmetry (CSLDF) is a technique that measures the capillary blood flow of the retina and optic nerve head and provides a two-dimensional map ...
Aslan S - - 2011
The objective of this study was to compare the effects of gonadotropin-releasing hormone (GnRH) and human chorionic gonadotropin (hCG) on follicular blood flow (FBF) during the pre-ovulatory period and on luteal blood flow (LBF) during dioestrus in Holstein-Friesian heifers. Twelve animals were randomly divided into two groups and treated with ...
Pancarc─▒ S M - - 2011
Two experiments were conducted to test the hypothesis that there are dynamic changes in follicular blood flow during follicular deviation and that nitric oxide (NO) in follicular fluid (FF) plays a role in regulation of follicular blood flow. In Experiment I, follicular blood flow of the two largest follicles was ...
Takasaki Akihisa - - 2011
Blood flow in the corpus luteum (CL) is closely related to luteal function. It is unclear how luteal blood flow is regulated. Standardized ovarian-stimulation protocol with a gonadotropin-releasing hormone agonist (GnRHa long protocol) causes luteal phase defect because it drastically suppresses serum LH levels. Examining luteal blood flow in the ...
Takamori Yoshihiro - - 2011
A total of 15 patients with lumbar disc herniation at the L5-S1 disc level who underwent microendoscopic discectomy were examined. The nerve root blood flow and electrophysiological values were measured during an intraoperative straight-leg-raising (SLR) test. To investigate the relationships between nerve root blood flow changes and the electrophysiological values ...
Takayama Shin - - 2011
In traditional Chinese medicine, moxibustion is a local thermal therapy that is used for several conditions. Quantifying the effects of moxibustion therapy has been difficult because the treatment temperature depends on the physician's experience, and the temperature distribution in the target area is not uniform. This prospective observational study aims ...
El Behery Manal M - - 2011
To determine, by using 3-dimensional power Doppler ultrasonography, the effect of laparoscopic ovarian drilling (LOD) on the serum level of vascular endothelial growth factor (VEGF) and ovarian stromal blood flow changes in polycystic ovary syndrome (PCOS). A prospective controlled clinical study was conducted on 26 clomiphene-resistant women with PCOS who ...
Brown Louise F - - 2011
The introduction of a second trimester quadruple test for fetal Down's syndrome adds the measurement of serum inhibin A (InhA) and unconjugated oestriol (UE3) to the existing repertoire of alphafetoprotein and intact human chorionic gonadotrophin. The aim of this study was to assess the stability of InhA and UE3 in ...
Seth Henrik - - 2010
The control of the gastrointestinal hyperemia that occurs after feeding in most animals is of fundamental importance for the subsequent absorption, metabolism and redistribution of nutrients. Yet, in fish, it has received little attention and the nature of it is far from clear. We sought to investigate the importance of ...
Yayama Takafumi - - 2010
Phalen's test has been one of the most significant of clinical signs when making a clinical diagnosis of idiopathic carpal tunnel syndrome (CTS). However, it is unknown whether intraneural blood flow changes during Phalen's test in patients with CTS. In this study, an intraoperative Phalen's test was conducted in patients ...
Carreras F Javier - - 2010
We study the vitreous interface of the optic disc to delimit the passages for the flow of fluids through the prelaminar tissue of porcine eyes. Wet scanning electron microscope (SEM), conventional SEM and transmission electron microscope (TEM) were used to explore the surface of the optic nerve of the pig. ...
Hotta Harumi - - 2010
There are significant age-related changes in autonomic nervous system function that are responsible for an impaired ability to adapt to environmental or intrinsic visceral stimuli in the elderly. We review data on changes in autonomic nervous system regulation of cardiovascular and urinary function, as well as data on strategies to ...
Gierthmühlen Janne - - 2010
Several studies have suggested that autonomic neural control plays a role in regulation of cerebral blood flow (CBF), although the exact role of the sympathetic nervous system on CBF remains debated. The effects of sympathetic innervation on activity-induced cerebral perfusion changes in humans have not been studied. The aims of ...
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