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https://www.readbyqxmd.com/read/28808585/spinal-cord-injury-during-the-second-trimester-of-pregnancy
#1
Ahmad Zaheer Qureshi, Sami Ullah, Anas Jehad AlSaleh, Rubina' Ullah
INTRODUCTION: Pregnancies in women with spinal cord injury (SCI) are at greater risk of morbidity and mortality. Although pregnancy after SCI is well elaborated in the literature, SCI occurring during pregnancy is rarely reported. Abrupt changes in the body physiology because of SCI and the resulting disability add a risk to maternal and fetal well-being. Not only is the burden of care increased but there is also a higher risk of developing pressure ulcers, urinary tract infections, autonomic instability, intrauterine growth retardation and venous thromboembolism...
2017: Spinal Cord Series and Cases
https://www.readbyqxmd.com/read/28804821/d-dimer-testing-laboratory-aspects-and-current-issues
#2
Jecko Thachil, Giuseppe Lippi, Emmanuel J Favaloro
D-dimer has become one of the commonly requested coagulation tests, especially in the venous thromboembolism rule out setting. Appropriate D-dimer testing has significantly decreased the number of radiological investigations in this clinical scenario. D-dimer testing also plays an important role in the diagnostic process of the systemic coagulation disorders, especially disseminated intravascular coagulation in conjunction with other coagulation tests. However, widespread D-dimer testing without good understanding of the technical issues related to the test has recently caused some concerns...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28800610/anticoagulant-action-of-low-physiologic-and-high-albumin-levels-in-whole-blood
#3
Margret Paar, Christine Rossmann, Christoph Nusshold, Thomas Wagner, Axel Schlagenhauf, Bettina Leschnik, Karl Oettl, Martin Koestenberger, Gerhard Cvirn, Seth Hallström
Albumin is the most abundant plasma protein. Critical illness is often associated with altered, predominately decreased, serum albumin levels. This hypoalbuminaemia is usually corrected by administration of exogenous albumin. This study aimed to track the concentration-dependent influence of albumin on blood coagulation in vitro. Whole blood (WB) samples from 25 volunteers were prepared to contain low (19.3 ± 7.7 g/L), physiological (45.2 ± 7.8 g/L), and high (67.5 ± 18.1 g/L) levels of albumin. Haemostatic profiling was performed using a platelet function analyzer (PFA) 200, impedance aggregometry, a Cone and Platelet analyzer (CPA), calibrated automated thrombogram, and thrombelastometry (TEM)...
2017: PloS One
https://www.readbyqxmd.com/read/28790293/-critical-care-managements-after-lung-transplantation
#4
Masaki Anraku
Lung transplantation is a viable treatment option for patients with end-stage lung diseases such as interstitial pneumonia/pulmonary fibrosis, emphysema, pulmonary hypertension, and so on. Collecting available clinical, physiological, serological, and surgical information of both donor and recipient is vital when planning relevant postoperative managements. The goal of the managements is to keep the transplanted lung (s) functional while preventing/treating infection, rejection, and ischemiareperfusion lung injury...
July 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/28783102/the-pulmonary-circulation-in-the-single-ventricle-patient
#5
REVIEW
Amanda Hauck, Nicolas Porta, Steven Lestrud, Stuart Berger
In recent decades, survival of children with complex congenital heart disease has improved considerably. Specifically, children with a variety of congenital heart defects resulting in 'single ventricle' physiology can now undergo palliative surgery that allows survival beyond the neonatal period, and in many cases into adulthood, despite having a single functional ventricular pumping chamber supplying both the pulmonary and systemic circulation. Our growing understanding of the functionally univentricular heart has resulted in freedom from Fontan failure of >50% at 25 years post-Fontan...
August 7, 2017: Children
https://www.readbyqxmd.com/read/28780602/executive-function-after-exhaustive-exercise
#6
Mizuki Sudo, Takaaki Komiyama, Ryo Aoyagi, Toshiya Nagamatsu, Yasuki Higaki, Soichi Ando
PURPOSE: Findings concerning the effects of exhaustive exercise on cognitive function are somewhat equivocal. The purpose of this study was to identify physiological factors that determine executive function after exhaustive exercise. METHODS: Thirty-two participants completed the cognitive tasks before and after an incremental exercise until exhaustion (exercise group: N = 18) or resting period (control group N = 14). The cognitive task was a combination of a Spatial Delayed-Response (Spatial DR) task and a Go/No-Go task, which requires executive function...
August 5, 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28777198/nosocomial-infections-during-extracorporeal-membrane-oxygenation-incidence-etiology-and-impacton-patients-outcome
#7
Giacomo Grasselli, Vittorio Scaravilli, Stefano Di Bella, Stefano Biffi, Michela Bombino, Nicolò Patroniti, Luca Bisi, Anna Maria Peri, Antonio Pesenti, Andrea Gori, Laura Alagna
OBJECTIVE: To study incidence, type, etiology, risk factors, and impact on outcome of nosocomial infections during extracorporeal membrane oxygenation. DESIGN: Retrospective analysis of prospectively collected data. SETTING: Italian tertiary referral center medical-surgical ICU. PATIENTS: One hundred five consecutive patients who were treated with extracorporeal membrane oxygenation from January 2010 to November 2015...
August 2, 2017: Critical Care Medicine
https://www.readbyqxmd.com/read/28777103/influence-of-decreased-fibrinolytic-activity-and-plasminogen-activator-inhibitor-1-4g-5g-polymorphism-on-the-risk-of-venous-thrombosis
#8
Biljana A Vuckovic, Mirjana J Djeric, Branko V Tomic, Valentina J Djordjevic, Branislav V Bajkin, Gorana P Mitic
: Objective of our study is to determine whether decreased fibrinolytic activity or plasminogen activator inhibitor (PAI)-1 4G/5G polymorphism influence the risk of venous thrombosis.Our case-control study included 100 patients with venous thrombosis, and 100 random controls. When patients were compared with random controls, unconditional logistic regression was used to calculate odds ratios (ORs) with 95% confidence intervals (CIs).Decreased fibrinolytic activity yielded a 2.7-fold increase in risk for venous thrombosis than physiological fibrinolytic activity (OR 2...
August 1, 2017: Blood Coagulation & Fibrinolysis: An International Journal in Haemostasis and Thrombosis
https://www.readbyqxmd.com/read/28774830/a-physiologically-based-toxicokinetic-model-for-inhaled-ethylene-and-ethylene-oxide-in-mouse-rat-and-human
#9
Johannes Georg Filser, Dominik Klein
The olefin ethylene (ET) is the largest volume organic chemical. Mammals metabolize ET to ethylene oxide (EO), another important industrial chemical. The epoxide alkylates hemoglobin (Hb) and DNA and has mutagenic and carcinogenic properties. In order to estimate the EO burden in mice, rats, and humans resulting from inhalation exposure to gaseous ET or EO, a physiological toxicokinetic model was developed. It consists of the compartments lung, richly perfused tissues, kidneys, muscle, fat, arterial blood, venous blood, and liver containing the sub-compartment endoplasmic reticulum...
July 31, 2017: Toxicology Letters
https://www.readbyqxmd.com/read/28764614/quantitative-evaluation-of-arteriovenous-malformation-hemodynamic-changes-after-endovascular-treatment-using-parametric-color-coding-a-case-series-study
#10
Rodrigo Rivera, Juan G Sordo, Daniel Echeverria, Lautaro Badilla, Camila Pinto, Catalina Merino-Osorio
Background Brain arteriovenous malformations (AVMs) are complex vascular lesions. Endovascular treatment results are usually measured by calculating the volume reduction of the lesions. Nevertheless, vascular flow quantification seems a more physiologically accurate way of measuring endovascular results. We evaluated the use of parametric color coding (PCC) with digital subtraction angiography (DSA), in order to determine the feasibility of PCC to detect and measure the impact of AVM endovascular treatment-induced changes using real-time hemodynamic parameters...
January 1, 2017: Interventional Neuroradiology
https://www.readbyqxmd.com/read/28747888/the-hsp72-and-hsp90%C3%AE-mrna-responses-to-hot-downhill-running-are-reduced-following-a-prior-bout-of-hot-downhill-running-and-occur-concurrently-within-leukocytes-and-the-vastus-lateralis
#11
James A Tuttle, Bryna C R Chrismas, Oliver R Gibson, James H Barrington, David C Hughes, Paul C Castle, Alan J Metcalfe, Adrian W Midgley, Oliver Pearce, Chindu Kabir, Faizal Rayanmarakar, Sami Al-Ali, Mark P Lewis, Lee Taylor
The leukocyte heat shock response (HSR) is used to determine individual's thermotolerance. The HSR and thermotolerance are enhanced following interventions such as preconditioning and/or acclimation/acclimatization. However, it is unclear whether the leukocyte HSR is an appropriate surrogate for the HSR in other tissues implicated within the pathophysiology of exertional heat illnesses (e.g., skeletal muscle), and whether an acute preconditioning strategy (e.g., downhill running) can improve subsequent thermotolerance...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28741664/in-vitro-evaluation-of-an-immediate-response-starling-like-controller-for-dual-rotary-blood-pumps
#12
Andrew F Stephens, Michael C Stevens, Shaun D Gregory, Matthias Kleinheyer, Robert F Salamonsen
Rotary ventricular assist devices (VADs) are used to provide mechanical circulatory support. However, their lack of preload sensitivity in constant speed control mode (CSC) may result in ventricular suction or venous congestion. This is particularly true of biventricular support, where the native flow-balancing Starling response of both ventricles is diminished. It is possible to model the Starling response of the ventricles using cardiac output and venous return curves. With this model, we can create a Starling-like physiological controller (SLC) for VADs which can automatically balance cardiac output in the presence of perturbations to the circulation...
July 25, 2017: Artificial Organs
https://www.readbyqxmd.com/read/28733849/novel-pacing-strategies-for-heart-failure-management
#13
REVIEW
Jordan S Leyton-Mange, Theofanie Mela
Cardiac resynchronization therapy has emerged as the gold standard for heart failure patients with left ventricular systolic dysfunction and electrical dyssynchrony from an intrinsic intraventricular conduction delay or right ventricular pacing. However, the limits imposed by the coronary sinus venous anatomy restrict the applicability of the technology for many potential recipients. Furthermore, conventional resynchronization, by virtue of utilizing a single site of epicardial origin for left ventricular activation, is non-physiological...
August 2017: Current Treatment Options in Cardiovascular Medicine
https://www.readbyqxmd.com/read/28732675/substrate-stiffness-regulates-arterial-venous-differentiation-of-endothelial-progenitor-cells-via-the-ras-mek-pathway
#14
Changyue Xue, Tao Zhang, Xueping Xie, Qi Zhang, Shu Zhang, Bofeng Zhu, Yunfeng Lin, Xiaoxiao Cai
Cells sense and respond to the biophysical properties of their surrounding environment by interacting with the extracellular matrix (ECM). Therefore, the optimization of these cell-matrix interactions is critical in tissue engineering. The vascular system is adapted to specific functions in diverse tissues and organs. Appropriate arterial-venous differentiation is vital for the establishment of functional vasculature in angiogenesis. Here, we have developed a polydimethylsiloxane (PDMS)-based substrate capable of simulating the physiologically relevant stiffness of both venous (7kPa) and arterial (128kPa) tissues...
July 18, 2017: Biochimica et Biophysica Acta
https://www.readbyqxmd.com/read/28729160/echo-time-dependence-of-the-bold-response-transients-a-window-into-brain-functional-physiology
#15
Martin Havlicek, Dimo Ivanov, Benedikt A Poser, Kamil Uludag
The blood oxygenation level-dependent (BOLD) fMRI response to neuronal activation results from a complex interplay of induced metabolic and vascular changes. Thus, its transients, such as initial overshoot and post-stimulus undershoot, provide a window into the dynamic relationships of the underlying physiological variables. In this study, we propose multi-echo fMRI as a tool to investigate the physiological underpinnings of the BOLD signal, in particular, and brain functional physiology, in general. In the human visual cortex at 3 T, we observed that the BOLD response is nonlinearly dependent on echo-time (TE) and the amount of nonlinearity varies during the entire time-course...
July 18, 2017: NeuroImage
https://www.readbyqxmd.com/read/28727025/effect-of-handling-intensity-at-the-time-of-transport-for-slaughter-on-physiological-response-and-carcass-characteristics-in-beef-cattle-fed-ractopamine-hydrochloride
#16
J A Hagenmaier, C D Reinhardt, S J Bartle, J N Henningson, M J Ritter, M S Calvo-Lorenzo, G J Vogel, C A Guthrie, M G Siemens, D U Thomson
The effects of handling intensity on the physiological response and carcass characteristics of feedlot cattle fed ractopamine hydrochloride were evaluated at the time of transport to slaughter. Eighty steers (BW = 668 ± 36 kg) representing 10 lots of similar breed, frame size, and degree of finish were blocked by lot, stratified by weight, and randomly assigned to 1 of 2 handling intensities (HI) over a 1,600 m dirt alley course: 1) low-stress handling (LSH) or 2) high-stress handling (HSH). For the LSH treatment, 4 penmates were kept at a walk with the use of a lead rider...
May 2017: Journal of Animal Science
https://www.readbyqxmd.com/read/28717161/development-and-characterization-of-a-novel-prox1-egfp-lymphatic-and-schlemm-s-canal-reporter-rat
#17
Eunson Jung, Daniel Gardner, Dongwon Choi, Eunkyung Park, Young Jin Seong, Sara Yang, Jorge Castorena-Gonzalez, Antoine Louveau, Zhao Zhou, Gene K Lee, David P Perrault, Sunju Lee, Maxwell Johnson, George Daghlian, Maria Lee, Yeo Jin Hong, Yukinari Kato, Jonathan Kipnis, Michael J Davis, Alex K Wong, Young-Kwon Hong
The lymphatic system plays a key role in tissue fluid homeostasis, immune cell trafficking, and fat absorption. We previously reported a bacterial artificial chromosome (BAC)-based lymphatic reporter mouse, where EGFP is expressed under the regulation of the Prox1 promoter. This reporter line has been widely used to conveniently visualize lymphatic vessels and other Prox1-expressing tissues such as Schlemm's canal. However, mice have a number of experimental limitations due to small body size. By comparison, laboratory rats are larger in size and more closely model the metabolic, physiological, and surgical aspects of humans...
July 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28708730/physiological-laterality-of-superficial-cerebral-veins-on-susceptibility-weighted-imaging
#18
Satoshi Matsushima, Tetsuya Shimizu, Taku Gomi, Kunihiko Fukuda
OBJECTIVE: The purpose of this study is to evaluate whether laterality of the superficial cerebral veins can be seen on susceptibility-weighted imaging (SWI) in patients with no intracranial lesions that affect venous visualization. METHODS: We retrospectively evaluated 386 patients who underwent brain magnetic resonance imaging including SWI in our institute. Patients with a lesion with the potential to affect venous visualization on SWI were excluded. Two neuroradiologists visually evaluated the findings and scored the visualization of the superficial cerebral veins...
July 13, 2017: Journal of Computer Assisted Tomography
https://www.readbyqxmd.com/read/28702982/chronic-inflammation-therapy-combined-with-low-dose-cytokines-in-the-treatment-of-chronic-ulcers-of-lower-limbs
#19
S E Aragona, P Amori, G Mereghetti, J Lotti, T Lotti, G V L Colombo
Prevalence of chronic venous leg ulcers has increased from 55% to 75% in 10 years. We treat chronic vascular lesions according to a cyclic multiphase method that follows the instrumental and differential etiologic diagnosis of ulcers of the lower limbs. The AIMED (Anti Inflammatory Regenerative Medicine) operating model follows the diagnostic phase and is structured in 5 interconnected phases. Mare evaluation, pH control, biofilm removal and prevention and infections are approached according to the International Guidelines...
July 13, 2017: Journal of Biological Regulators and Homeostatic Agents
https://www.readbyqxmd.com/read/28696852/imaging-of-pregnancy-related-vascular-complications
#20
R Scooter Plowman, Cylen Javidan-Nejad, Constantine A Raptis, Douglas S Katz, Vincent M Mellnick, Sanjeev Bhalla, Patricia Cornejo, Christine O Menias
Pregnancy results in substantial hemodynamic and prothrombotic changes that form the foundation for downstream vascular complications, both during pregnancy and in the postpartum period. In addition, several important risk factors, including older patient age, diabetes, and smoking, can increase the risk for vascular-related pregnancy complications. Because radiologists often play an important role in evaluation of the pregnant patient, understanding the pathophysiology of vascular-related complications in pregnancy and their imaging appearances is essential for diagnostic accuracy...
July 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
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