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https://www.readbyqxmd.com/read/28543857/vena-cava-responsiveness-to-controlled-isovolumetric-respiratory-efforts
#1
Anna Folino, Marco Benzo, Paolo Pasquero, Andrea Laguzzi, Luca Mesin, Alessandro Messere, Massimo Porta, Silvestro Roatta
OBJECTIVES: Respirophasic variation of inferior vena cava (IVC) size is affected by large variability with spontaneous breathing. This study aims at characterizing the dependence of IVC size on controlled changes in intrathoracic pressure. METHODS: Ten healthy subjects, in supine position, performed controlled isovolumetric respiratory efforts at functional residual capacity, attaining positive (5, 10, and 15 mmHg) and negative (-5, -10, and -15 mmHg) alveolar pressure levels...
May 22, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28543091/intraoperative-localized-constrained-registration-in-navigated-bronchoscopy
#2
Erlend Fagertun Hofstad, Hanne Sorger, Janne Beate Lervik Bakeng, Lucian Gruionu, Håkon Olav Leira, Tore Amundsen, Thomas Langø
PURPOSE: One of the major challenges in electromagnetic navigated bronchoscopy is the navigation accuracy. An initial rigid image-to-patient registration may not be optimal for the entire lung volume, as the lung tissue anatomy is likely to have shifted since the time of computer tomography (CT) acquisition. The accuracy of the initial rigid registration will also be affected throughout the procedure by breathing, coughing, patient movement and tissue displacements due to pressure from bronchoscopy tools...
May 25, 2017: Medical Physics
https://www.readbyqxmd.com/read/28542555/parenting-styles-feeding-styles-and-food-related-parenting-practices-in-relation-to-toddlers-eating-styles-a-cluster-analytic-approach
#3
Klazine van der Horst, Ester F C Sleddens
INTRODUCTION: Toddlers' eating behaviors are influenced by the way parents interact with their children. The objective of this study was to explore how five major constructs of general parenting behavior cluster in parents of toddlers. These parenting clusters were further explored to see how they differed in the use of feeding strategies (i.e. feeding styles and food parenting practices) and by reported child eating styles. METHODS: An online survey with 1005 mothers/caregivers (legal guardians) with at least one child between 12 and 36 months old was conducted in the United States in 2012, assessing general parenting behavior, feeding style, food parenting practices and the child eating styles...
2017: PloS One
https://www.readbyqxmd.com/read/28542464/maternal-low-thyroxin-levels-are-associated-with-adverse-pregnancy-outcomes-in-a-chinese-population
#4
Yong Zhang, Xiaobei Dai, Shuai Yang, Chen Zhang, Mi Han, He-Feng Huang, Jianxia Fan
Although thyroid dysfunction in early pregnancy may have adverse effects on pregnancy outcomes, few studies have examined the relationship between maternal low free thyroxin (FT4) levels in both first and third trimesters of pregnancy and the incidence of adverse pregnancy outcomes. We hypothesized that low FT4 levels in either first or third trimesters of pregnancy may have different effects on pregnancy outcomes. The study included 6,031 mothers who provided both first and third pregnancy serum samples for analyses of thyroid function...
2017: PloS One
https://www.readbyqxmd.com/read/28542439/host-mediated-inflammatory-influence-on-glioblastoma-multiforme-recurrence-following-high-dose-ionizing-radiation
#5
J Tyson McDonald, Xuefeng Gao, Cole Steber, Jawon Lee Breed, Caitlin Pollock, Lili Ma, Lynn Hlatky
Despite optimal clinical treatment, glioblastoma multiforme (GBM) inevitably recurs. Standard treatment of GBM, exposes patients to radiation which kills tumor cells, but also modulates the molecular fingerprint of any surviving tumor cells and the cross-talk between those cells and the host. Considerable investigation of short-term (hours to days) post-irradiation tumor cell response has been undertaken, yet long-term responses (weeks to months) which are potentially even more informative of recurrence, have been largely overlooked...
2017: PloS One
https://www.readbyqxmd.com/read/28541891/critical-closing-pressure-during-controlled-increase-in-intracranial-pressure-comparison-of-three-methods
#6
Katarzyna Kaczmarska, Magdalena Kasprowicz, Agnieszka Uryga, Leanne Calviello, Georgios Varsos, Zofia Czosnyka, Marek Czosnyka
Critical closing pressure (CrCP) is the arterial blood pressure (ABP) threshold, below which small arterial vessels collapse and cerebral blood flow ceases. Here we aim to compare three methods for CrCPestimation in scenario of a controlled increase in intracranial pressure (ICP), induced by infusion tests performed in patients with suspected normal pressure hydrocephalus (NPH). METHODS: Computer recordings of directly-measured ICP, ABP and transcranial Doppler cerebral blood flow velocity (CBFV), from 37 NPH patients undergoing infusion tests, were retrospectively analyzed...
May 24, 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28540308/relationships-between-composition-of-major-fatty-acids-and-fat-distribution-and-insulin-resistance-in-japanese
#7
Chikako Fujii, Toshihide Kawai, Koichiro Azuma, Yuko Oguma, Fuminori Katsukawa, Hiroshi Hirose, Kumiko Tanaka, Shu Meguro, Hideo Matsumoto, Hiroshi Itoh
Objective. The aim of this study was to evaluate the relationships between the composition of free fatty acids (FFAs) and metabolic parameters, including body fat distribution, in Japanese. Methods. The study subjects were 111 Japanese patients (54 males, 57 females). Metabolic parameters and visceral and subcutaneous fat areas as determined by CT scanning at the umbilical level were measured. Glucose tolerance test (GTT) was performed by administering 75 g glucose orally. Results. The percentage of linoleic acid (C18:2), the greatest constituent among FFAs, was negatively correlated with visceral fat area (r = -0...
2017: Journal of Diabetes Research
https://www.readbyqxmd.com/read/28539376/longitudinal-associations-of-away-from-home-eating-snacking-screen-time-and-physical-activity-behaviors-with-cardiometabolic-risk-factors-among-chinese-children-and-their-parents
#8
Fei Dong, Annie Green Howard, Amy H Herring, Amanda L Thompson, Linda S Adair, Barry M Popkin, Allison E Aiello, Bing Zhang, Penny Gordon-Larsen
Background: Little is known about intergenerational differences in associations of urbanization-related lifestyle behaviors with cardiometabolic risk factors in children and their parents in rapidly urbanizing China.Objective: We tested the intergenerational differences in longitudinal associations of away-from-home eating, snacking, screen time, and leisure-time sports with high waist-to-height ratio (WHtR), elevated blood pressure (BP), elevated glycated hemoglobin (HbA1c), and elevated C-reactive protein (CRP) among Chinese children and their parents...
May 24, 2017: American Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/28539354/cerebral-oxygenation-and-regional-cerebral-perfusion-responses-with-resistance-breathing-during-central-hypovolemia
#9
Victoria L Kay, Justin Daniel Sprick, Caroline A Rickards
Resistance breathing improves tolerance to central hypovolemia induced by lower body negative pressure (LBNP), but this is not related to protection of anterior cerebral blood flow (indexed by mean middle cerebral artery velocity, MCAv). We hypothesized that inspiratory resistance breathing improves tolerance to central hypovolemia by maintaining cerebral oxygenation (ScO2), and protecting cerebral blood flow in the posterior cerebral circulation (indexed by posterior cerebral artery velocity, PCAv). Eight subjects (4M/4F) completed two experimental sessions of a presyncopal-limited LBNP protocol (3 mmHg/min onset rate) with and without (Control) resistance breathing via an impedance threshold device (ITD)...
May 24, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28539201/the-association-between-ghrelin-levels-and-markers-of-arterial-stiffness-and-inflammatory-markers-in-saudi-subjects-with-metabolic-syndrome
#10
Tarek Mohamed Ali, Osama Mahmoud Mehanna, Ahmad El Askary
BACKGROUND: Arterial stiffness is a principal cardiovascular risk factor. Metabolic syndrome (MetS) is a predisposing factor to arterial stiffness and persistent MetS circumstances can deteriorate the arterial stiffness severity. Low concentrations of plasma ghrelin are meticulously connected to arterial stiffness. This work targeted to judge the relationship between plasma ghrelin levels and intima-media thickness (IMT) and brachial-ankle pulse wave velocity (baPWV) as markers of arterial stiffness and inflammatory markers and in Saudi subjects with MetS...
May 12, 2017: Diabetes & Metabolic Syndrome
https://www.readbyqxmd.com/read/28539079/a-cognitive-stressor-for-event-related-potential-studies-the-portland-arithmetic-stress-task
#11
Rachel Atchley, Roger Ellingson, Daniel Klee, Tabatha Memmott, Barry Oken
In this experiment, we developed and evaluated the Portland Arithmetic Stress Task (PAST) as a cognitive stressor to evaluate acute and sustained stress reactivity for event-related potential (ERP) studies. The PAST is a titrated arithmetic task adapted from the Montreal Imaging Stress Task (MIST), with added experimental control over presentation parameters, improved and synchronized acoustic feedback, and generation of timing markers needed for physiological analyses of real-time brain activity. Thirty-one older adults (M = 60 years) completed the PAST...
May 24, 2017: Stress: the International Journal on the Biology of Stress
https://www.readbyqxmd.com/read/28537790/lgbtq-women-appearance-negotiations-and-workplace-dress-codes
#12
Kelly L Reddy-Best
The purpose of this study was to explore LGBTQ women's experiences with unwritten or formal dress codes at work. I asked: what are LGBTQ women's experiences in the workplace with appearance management, and what are LGBTQ women's experiences navigating the written and unwritten dress codes in the workplace? To answer the research question, interviews were conducted with 24 self-identifying LGBTQ women. Six key themes emerged from the data. Themes included (1) expressed sexual identity in appearance, (2) unwritten dress codes in work environments did not always allow for expression of sexual identity in appearance, (3) motivations for pressure or desire to conceal expression of sexual identity in appearance at work, (4) negotiations of revealing or concealing sexual identity in appearance in the workplace impacted levels of comfort and confidence (5) verbal and non-verbal negative experiences related to appearance at work, and (6) received compliments about appearance at work...
May 24, 2017: Journal of Homosexuality
https://www.readbyqxmd.com/read/28537783/association-of-mild-to-moderate-reduction-in-glomerular-filtration-rate-with-subclinical-atherosclerosis-in-postmenopausal-women
#13
Florina Parv, Andrei Beceanu, Rodica Avram, Romulus Zorin Timar, Bogdan Timar, Florica Gadalean
BACKGROUND: Due to loss of hormonal protective effects, postmenopausal women have an increased cardiovascular (CV) risk. Chronic kidney disease (CKD) is a well-established risk factor for CV disease, but little is known whether mild-to-moderate kidney dysfunction is associated with atherosclerosis burden in the postmenopausal asymptomatic women. MATERIALS AND METHODS: Subclinical atherosclerosis was evaluated in 125 postmenopausal women with no clinical form of atherosclerosis, by carotid and femoral ultrasonography, ankle-brachial index (ABI), and flow-mediated dilation (FMD)...
May 24, 2017: Journal of Women's Health
https://www.readbyqxmd.com/read/28537464/multi-domain-assessment-of-autonomic-function-in-spinal-cord-injury-using-a-modified-autonomic-reflex-screen
#14
Michael James Berger, Kurt Kimpinski, Katharine Dianne Currie, Hirmand Nouraei, Mahsa Sadeghi, Andrei V Krassioukov
The purpose of this study was to characterize autonomic lesions in participants with spinal cord injury (SCI; n=10) using an autonomic reflex screen, incorporating sudomotor, cardiovagal and sympathetic adrenergic tests, as well as hemodynamic responses to head-up tilt (HUT). Hemodynamic responses were compared to healthy controls (n=20) and previously published normative cutoffs in order better identify autonomic impairments. Sympathetic skin responses (SSRs), heart rate response to deep breathing (HRDB) and heart rate and beat-to-beat blood pressure responses to Valsalva maneuver (VM) and HUT were measured...
May 24, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28537371/deconvolution-of-mass-spectral-interferences-of-chlorinated-alkanes-and-their-thermal-degradation-products-chlorinated-alkenes
#15
Lena Schinkel, Sandro Lehner, Norbert V Heeb, Peter Lienemann, Kristopher McNeill, Christian Bogdal
Chlorinated paraffins (CPs) are high production volume chemicals and ubiquitous environmental contaminants. CPs are produced and used as complex mixtures of polychlorinated n-alkanes containing thousands of isomers, leading to demanding analytical challenges. Due to their high degree of chlorination, CPs have highly complex isotopic mass patterns that often overlap, even when applying high resolution mass spectrometry. This is further complicated in the presence of degradation products such as chlorinated alkenes (CP-enes)...
May 24, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28536807/prognostic-factors-for-enteroatmospheric-fistula-in-open-abdomen-treated-with-negative-pressure-wound-therapy-a-multicentre-experience
#16
Guillaume Giudicelli, A Rossetti, C Scarpa, N C Buchs, R Hompes, R J Guy, K Ukegjini, P Morel, F Ris, M Adamina
BACKGROUND: Reductions in mortality were reported with negative pressure wound therapy for laparostomy. However, some authors have voiced concern over an increased risk of enteroatmospheric fistulae. In this retrospective study, we hypothesized that surgical and metabolic derangements could increase the incidence of enteroatmospheric fistulae. We aimed to assess our experience and report long-term outcomes. METHODS: A multicentre review of all patients with a laparostomy managed with negative pressure wound therapy between 2005 and 2015 was undertaken...
May 23, 2017: Journal of Gastrointestinal Surgery: Official Journal of the Society for Surgery of the Alimentary Tract
https://www.readbyqxmd.com/read/28535890/impacts-of-social-support-on-symptoms-in-brazilian-women-with-fibromyalgia
#17
Rodrigo Pegado de Abreu Freitas, Sandra Cristina de Andrade, Maria Helena Constantino Spyrides, Maria Thereza Albuquerque Barbosa Cabral Micussi, Maria Bernardete Cordeiro de Sousa
We aimed to assess the impact of social support on symptoms in Brazilian women with FM. An observational, descriptive study enrolling 66 women who met the 1990 American College of Rheumatology (ACR) criteria. Social support was measured by the Social Support Survey (MOS-SSS), functionality was evaluated using the Fibromyalgia Impact Questionnaire (FIQ), depression was assessed using the Beck Depression Inventory (BDI), anxiety was measured using the Hamilton Anxiety Scale (HAS), affectivity was measured by Positive and Negative Affect Schedule (PANAS), and algometry was carried out to record pressure pain threshold (PPth) and tolerance (PPTo) at 18 points recommended by the ACR...
May 2017: Revista Brasileira de Reumatologia
https://www.readbyqxmd.com/read/28535762/gait-initiation-and-termination-strategies-in-patients-with-prader-willi-syndrome
#18
Veronica Cimolin, Nicola Cau, Manuela Galli, Cristina Santovito, Graziano Grugni, Paolo Capodaglio
BACKGROUND: Gait Initiation (GI) is a functional task representing one of the first voluntary destabilizing behaviours observed in the development of a locomotor pattern as the whole body centre of mass transitions from a large to a small base of support. Conversely, Gait Termination (GT) consists in the transition from walking to standing which, in everyday life, is a very common movement. Compared to normal walking, it requires higher control of postural stability. For a safe GT, the forward movement of the body has to be slowed down to achieve a stable upright position...
May 23, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28535557/endogenous-pain-facilitation-rather-than-inhibition-differs-between-people-with-chronic-fatigue-syndrome-multiple-sclerosis-and-controls-an-observational-study
#19
Simon M Collin, Jo Nijs, Mira Meeus, Andrea Polli, Barbara Willekens, Kelly Ickmans
BACKGROUND: Commonalities in the core symptoms of fatigue and cognitive dysfunction experienced by chronic fatigue syndrome (CFS, also known as ME) and multiple sclerosis (MS) patients have been described. Many CFS and MS patients also experience chronic pain, which has been attributed to central sensitization in both groups of patients. However, the characteristics of pain in CFS and MS patients have not been compared. OBJECTIVES: To compare experimental pain measurements in patients with CFS or MS and healthy controls...
May 2017: Pain Physician
https://www.readbyqxmd.com/read/28534711/expressions-of-irisin-and-urotensin-ii-and-their-relationships-with-blood-pressure-in-patients-with-preeclampsia
#20
Li-Jie Zhang, Qian Xie, Chao-Shu Tang, Ai-Hua Zhang
The aims of this study are to observe irisin and urotensin II (UII) levels in serum and placenta in normal pregnant and preeclamptic women and investigate the relationship between expressions irisin and UII, and their association with blood pressure. A total of 67 pregnant subjects were recruited, including 31 healthy and 36 preeclamptic pregnant women. Serum irisin and UII concentrations were measured. Expressions of fibronectin type III domain-containing protein 5 (FNDC5) (irisin precursor) and UII in placenta specimens were performed...
May 23, 2017: Clinical and Experimental Hypertension: CHE
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