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Negative pressure

Morten S Jellesen, Christian Bang Olsen, Samine Ruff, Radoslaw Spiewak, Dathan Hamann, Carsten R Hamann, Ian R White, Jeanne D Johansen, Jacob Pontoppidan Thyssen
BACKGROUND: Present screening methods to rapidly detect release of nickel and cobalt ions from metallic surfaces involve colorimetric dimethylglyoxime (DMG)- and disodium-1-nitroso-2-naphthol-3,6-disulfonate-based spot tests with a cotton bud. There is a risk of false-negative test reactions because test outcomes are dependent on the pressure, area, and duration of surface wiping. OBJECTIVE: The aim of the study was to develop a miniaturized electrochemical device that uses a voltage to accelerate nickel and cobalt release from the tested item and perform an initial validation...
June 21, 2018: Dermatitis
Barbara A Fowler, Joyce Newman Giger
Numerous researchers have examined the serious consequences of food insecurity and food deserts affecting the nutritional health of poor or low-income African-American women and their families. Food insecurity is defined as having limited or uncertain capacityfor acquiring sufficient, safe, and nutritious food at all times to meet one's dietary needs, while food deserts refer to economically and socially-deprived inner city areas with inadequate food supply that are often inhabited by low-income groups. Researchers have found that despite the capacity of community-level resources such as SNAP (Supplemental Nutrition Assistance Program) and WIC (Women, Infants, and Children) supporting healthy nutrition, food insecurity persists among some recipients of both nutritional resources...
July 2017: Journal of National Black Nurses' Association: JNBNA
Lorraine Hawick, Jennifer Cleland, Simon Kitto
CONTEXT: Buildings and learning spaces contribute in crucial ways to people's experiences of these spaces. However, this aspect of context has been under-researched in medical education. We addressed this gap in knowledge by using the conceptual notions of space and place as heuristic lenses through which to explore the impact of a new medical school building on student experiences. METHODS: We carried out an exploratory case study to explore the impact of a new medical school building on student experiences...
June 22, 2018: Medical Education
Y H Dong, Y Song, B Dong, Z Y Zou, Z H Wang, Z G Yang, X J Wang, Y H Li, J Ma
OBJECTIVE: To analyze the epidemic situation of blood pressure (BP) status and its association with nutritional status among Chinese children and adolescents aged 7-18 years old in 2014, and to provide important scientific basis for the control of students' hypertension. METHODS: All the subjects aged 7 to 18 years in both genders were sampled from 2014 Chinese national surveys on students' constitution and health. BP status was evaluated according to Chinese national gender-, age- and height-specific references, including hypertension (HTN), elevated hypertension (elevated HTN), isolated systolic HTN (SHTN), isolated diastolic HTN (DHTN) and mix HTN...
June 18, 2018: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
Katsuhiko Kohara, Yasuharu Tabara, Masayuki Ochi, Yoko Okada, Maya Ohara, Tokihisa Nagai, Yasumasa Ohyagi, Michiya Igase
Favorable effects of sauna bathing on cardiovascular disease have been demonstrated. Hot water bathing is an alternative, and could also have similar effects. Information pertaining to hot water bathing frequency and water temperature was obtained from 873 subjects. Carotid mean and max intima-media thickness (IMT) and brachial-ankle pulse wave velocity (baPWV) were measured as indices of atherosclerosis. Central haemodynamics were evaluated using radial pulse waveform analyses. Plasma levels of B-type natriuretic peptide (BNP) were measured as an index for cardiac loading...
June 21, 2018: Scientific Reports
Shao Lin, Wayne R Lawrence, Ziqiang Lin, Stephen DiRienzo, Kevin Lipton, Guang-Hui Dong, Ricky Leung, Ursula Lauper, Philip Nasca, Neil Stuart
More extreme cold weather and larger weather variations have raised concerns regarding their effects on public health. Although prior studies assessed the effects of cold air temperature on health, especially mortality, limited studies evaluated wind chill temperatures on morbidity, and health effects under the current cold warning threshold. This study identified the thresholds, lag periods, and best indicators of extreme cold on cardiovascular disease (CVD) by comparing effects of wind chill temperatures and cold air temperatures on CVD emergency department (ED) visits in winter and winter transition months...
October 15, 2018: Science of the Total Environment
Lu Hao, Cen Pan, Di Fang, Xiaoyu Zhang, Decheng Zhou, Peilong Liu, Yongqiang Liu, Ge Sun
Grazing is a major ecosystem disturbance in arid regions that are increasingly threatened by climate change. Understanding the long-term impacts of grazing on rangeland vegetation dynamics in a complex terrain in mountainous regions is important for quantifying dry land ecosystem services for integrated watershed management and climate change adaptation. However, data on the detailed long-term spatial distribution of grazing activities are rare, which prevents trend detection and environmental impact assessments of grazing...
October 15, 2018: Science of the Total Environment
Marco Milardi, Vassilis Aschonitis, Anna Gavioli, Mattia Lanzoni, Elisa Anna Fano, Giuseppe Castaldelli
While the significance of anthropogenic pressures in shaping species distributions and abundances is undeniable, some ambiguity still remains on their relative magnitude and interplay with natural environmental factors. In our study, we examined 91 late-invasion-stage river locations in Northern Italy using ordination methods and variance partitioning (partial-CCA), as well as an assessment of environmental thresholds (TITAN), to attempt to disentangle the effects of eutrophication and exotic species on native species...
May 15, 2018: Science of the Total Environment
Kyung Woo Kim, Ho Chan Lim, Jae Hee Park, Sang Gyu Park, Ye Jin Park, Hm Hak Cho
Background: Organizations are pursing complex and diverse aims to generate higher profits. Many workers experience high work intensity such as workload and work pressure in this organizational environment. Especially, psychological burden is a commonly used term in workplace of Republic of Korea. This study focused on defining the psychological burden from the perspective of occupational safety and health and tried to develop a scale for psychological burden. Methods: The 48 preliminary questionnaire items for psychological burden were prepared by a focus group interview with 16 workers through the Copenhagen Psychosocial Questionnaire II and Mindful Awareness Attention Scale...
June 2018: Safety and Health At Work
Umesh Kumar, Pradeep Jain
Objective: The objective of the study was to determine the feasibility of infragluteal fasciocutaneous flap in recurrent ischial pressure sore. Materials and Methods: In our study, from 2015 to 2017, nine patients suffering from recurrent ischial sore with scars of previous surgery were managed with infragluteal fasciocutaneous flap. Wound bed was prepared by surgical debridement and negative pressure wound therapy in each case. In two cases, gracilis muscle flap was used as adjuvant to fill up the residual cavity...
January 2018: Indian Journal of Plastic Surgery: Official Publication of the Association of Plastic Surgeons of India
Michael A Manfredi, Susannah J Clark, Steven J Staffa, Peter D Ngo, C Jason Smithers, Thomas E Hamilton, Russell W Jennings
BACKGROUND: Esophageal perforation is a potentially life-threatening problem if not quickly diagnosed and treated appropriately. Negative pressure wound therapy (NPWT), commercially known as V.A.C.® therapy, was developed in the early 1990 s and is now standard of care for chronic surface wounds, ulcers, and burns. Adapting vacuum sponge therapy for use intraluminally for perforations of the esophagus was first reported in 2008. We report the first pediatric experience on a customized esophageal vacuum assisted closure (EVAC) device for closure of esophageal perforations...
June 20, 2018: Journal of Pediatric Gastroenterology and Nutrition
Charlotte B Thorup, Mette Hougaard, Pernille F Blindum, Erik E Sørensen
Surgical site infections that develop after vascular and cardiac surgery are often treated with Negative Pressure Wound Therapy (NPWT). Due to the severity of the infection and risk of bleeding, this NPWT often requires hospitalisation. Fourteen patients were selected for qualitative interviews to investigate their experiences and the meaning of patient participation during hospitalisation with NPWT. Results show that hospitalisation induces tension between an intrusion of privacy and being part of a community...
June 21, 2018: International Wound Journal
Adrian J Wilson
Sparse phased array ultrasound transducers with millimetre length scale elements have previously been proposed for generating hyperthermia but not for imaging. Numerical simulation with a pseudospectral solver was used to investigate: (a) how the position of the maximum pressure in the focal region changed with element diameter and frequency; (b) how the size and position of the focal region changed with focal distance under steering; and (c) the imaging performance of 15 element random arrays. These analyses were performed for both piston-like and non piston-like millimetre diameter elements since previous work has shown a shift in the distance to the maximum pressure in the focal region with the latter...
June 21, 2018: Physics in Medicine and Biology
Miguel Anaya, Juan F Galisteo-López, Mauricio Ernesto Calvo, Juan P Espinos, Hernan Miguez
Herein we present a combined study of the evolution of both the photoluminescence and the surface chemical structure of organic metal halide perovskites as environmental oxygen pressure rises from ultra-high vacuum up to a few thousandths of an atmosphere. Analyzing the changes occurring at the semiconductor surface upon photo-excitation under controlled oxygen atmosphere in an X-ray photoelectron spectroscopy (XPS) chamber, we can rationalize the rich variety of photophysical phenomena observed and provide a plausible explanation for light-induced ion migration, one of the most conspicuous and debated concomitant effects detected during photoexcitation...
June 21, 2018: Journal of Physical Chemistry Letters
Yan Liang, William H Bradford, Jing Zhang, Farah Sheikh
Four and a half LIM domain (FHL) protein family members, FHL1 and FHL2, are multifunctional proteins that are enriched in cardiac muscle. Although they both localize within the cardiomyocyte sarcomere (titin N2B), they have been shown to have important yet unique functions within the context of cardiac hypertrophy and disease. Studies in FHL1-deficient mice have primarily uncovered mitogen-activated protein kinase (MAPK) scaffolding functions for FHL1 as part of a novel biomechanical stretch sensor within the cardiomyocyte sarcomere, which acts as a positive regulator of pressure overload-mediated cardiac hypertrophy...
June 20, 2018: Biophysical Reviews
Brunno Cf Sanches, Walker W Laranja, João Cc Alonso, Ronald F Rejowski, Fabiano A Simões, Leonardo O Reis
The aim of this study is to assess the impact of objective (stretched) and subjective penile size in the erectile function in a urological check-up program on a cross-sectional study including 689 men aged 35-70 years. IIEF-5 questionnaire, physical examination (penile length, prostate volume, blood pressure, body mass index-BMI), metabolic syndrome (MS), comorbidities, habits (sexual intercourse frequency, physical activity, alcohol, and tobacco use), level of education, serum glucose, total testosterone, estradiol, PSA, lipid profile, and self-perceptions (ejaculation time and subjective penile size) were examined in multivariate models using logistic and linear regressions...
June 21, 2018: International Journal of Impotence Research
Filippo Boriani, Andrea Margara, Donatella Granchi, Nicola Baldini
BACKGROUND: The circumferential thigh lift (CTL) with vertical scar is a more extensive and effective procedure compared to the traditional lift, but the scar is not aequally concealed. Negative pressure treatment (NPT) is considered to have a beneficial effect on the physiological process of wound healing and early scar formation. A comparison study was therefore carried out in order to evaluate the effect of NPT on scar quality. METHODS: All postobese patients consecutively treated for thigh laxity in the period January 2012 to April 2013 were recruited in a prospective cohort study...
June 18, 2018: Annali Italiani di Chirurgia
Erin I Garcia, Michael Emerman
Genes in the APOBEC3 family encode cytidine deaminases that provide a barrier against viral infection and retrotransposition. Of all APOBEC3 genes in humans, APOBEC3H ( A3H ) is the most polymorphic: some haplotypes encode stable and active A3H proteins, while others are unstable and poorly antiviral. Such variation in human A3H affects interactions with the lentiviral antagonist Vif, which counteracts A3H via proteasomal degradation. In order to broaden our understanding of A3H-Vif interactions, as well as its evolution in Old World monkeys, we characterized A3H variation within four African green monkey (AGM) subspecies...
June 20, 2018: Journal of Virology
Dhanashree Ratra, Vineet Ratra, Haard Shah
BACKGROUND: We report occurrence of peculiar tiny white thread like vitreous opacities after intravitreal triamcinolone injection. These persisted without any change for over a year. We ascribe them to aggregation of triamcinolone crystals due to the purification methods. CASE PRESENTATION: Seven patients (8 eyes) with macular edema developed tiny whitish thread like opacities in the vitreous 2-3 months after undergoing an intravitreal injection of triamcinolone acetonide preparation containing benzyl alcohol as preservative...
June 20, 2018: BMC Ophthalmology
Chunhua Deng, Zhichao Zhang, Hongjun Li, Peng Bai, Xian Cao, Adrian Sandra Dobs
OBJECTIVE: To investigate associations between cardiovascular disease risk factors, including fasting glucose, cholesterol, high density lipoprotein cholesterol (HDL-c), LDL-c, blood pressure, body mass index (BMI), C-peptide, creatinine kinase, smoking, alcohol use, physical activity, C-reactive protein as well as homocysteine levels and cardiovascular events. METHODS: Data from 1545 men aged ≥40 years, with testosterone deficiency (TD) (<300 ng/dL) and non-TD (≥300 ng/dL) which were extracted from the National Health and Nutrition Examination Survey database 2011-2012 and analyzed...
June 20, 2018: Aging Male: the Official Journal of the International Society for the Study of the Aging Male
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