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https://www.readbyqxmd.com/read/28103211/notes-from-the-field-hantavirus-pulmonary-syndrome-in-a-migrant-farm-worker-colorado-2016
#1
Grace Marx, Kaylan Stinson, Monte Deatrich, Bernadette Albanese
On August 8, 2016, Tri-County Health Department (Adams, Arapahoe, and Douglas counties) in Colorado was notified of a confirmed case of hantavirus pulmonary syndrome (HPS). The patient was a previously healthy male migrant farm worker aged 25 years, living in farm quarters, and working in vegetable fields for 8 weeks before symptom onset. On July 20, he experienced sudden onset of fever, severe headache, myalgias, cough, and nosebleed. He was evaluated at an emergency department on July 23, where his temperature was 103...
January 20, 2017: MMWR. Morbidity and Mortality Weekly Report
https://www.readbyqxmd.com/read/28103130/serum-progesterone-levels-in-pregnant-women-with-obstructive-sleep-apnea-a-case-control-study
#2
Jennifer Lee, Elizabeth E Eklund, Geralyn Lambert-Messerlian, Glenn E Palomaki, Kristen Butterfield, Patrizia Curran, Ghada Bourjeily
BACKGROUND: Pregnancy is a risk factor for sleep disordered breathing, including obstructive sleep apnea (OSA). Progesterone, one of the key hormones in pregnancy, a known respiratory drive stimulant, increases ventilation and may protect against OSA. We aimed to examine the relationship between circulating progesterone and OSA, after accounting for body weight and gestational age. METHODS: A case control study was conducted of pregnant women with OSA and those at low risk for the disorder...
January 19, 2017: Journal of Women's Health
https://www.readbyqxmd.com/read/28102956/experimental-verification-of-4d-monte-carlo-simulations-of-dose-delivery-to-a-moving-anatomy
#3
Sara Gholampourkashi, Miro Vujicic, Jason Belec, Joanna E Cygler, Emily Heath
PURPOSE: To evaluate a novel 4D Monte Carlo simulation tool by comparing calculations to physical measurements using a respiratory motion phantom. METHODS: We used a dynamic Quasar phantom in both stationary and breathing states (sinusoidal motion of amplitude of 1.8 cm and period of 3.3 s) for dose measurements on an Elekta Agility linear accelerator. Gafchromic EBT3 film and the RADPOS 4D dosimetry system were placed inside the lung insert of the phantom to measure dose profiles and point-dose values at the center of the spherical tumor inside the insert...
January 2017: Medical Physics
https://www.readbyqxmd.com/read/28102831/biomarkers-in-adult-asthma-a-systematic-review-of-8-isoprostane-in-exhaled-breath-condensate
#4
Adam M Peel, Christina-Jane Crossman-Barnes, Jonathan Tang, Stephen Fowler, Gwyneth Davies, Andrew Wilson, Yoon Loke
OBJECTIVES: We aimed to assess the evidence for the use of 8-isoprostane in exhaled breath condensate (EBC) as a biomarker in adult asthma. DESIGN: A systematic review and meta-analysis of EBC 8-isoprostane. METHODS: We searched a number of online databases (including PubMed, Embase and Scopus) in January 2016. We included studies of adult non-smokers with EBC collection and asthma diagnosis conducted according to recognised guidelines. We aimed to pool data using random effects meta-analysis and assess heterogeneity using I2...
January 19, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28102830/can-exhaled-volatile-organic-compounds-predict-asthma-exacerbations-in-children
#5
Dillys van Vliet, Agnieszka Smolinska, Quirijn Jöbsis, Jean Muris, Philippe Rosias, Jan Dallinga, Edward Dompeling, Frederik van Schooten
Background Asthma control falls short of current goals of asthma management guidelines. Non-invasive monitoring of airway inflammation may help to improve the level of asthma control in children. Aim 1) To identify a set of exhaled volatile organic compounds (VOCs) that is most predictive for an asthma exacerbation in children. 2) To determine the chemical background of predictive VOCs. Methods In an one-year prospective observational study, 96 asthmatic children were studied . At clinical visits with an interval of 2 months, asthma control, fractional exhaled nitric oxide, lung function (FEV1, FEV1/VC) and VOCs in exhaled breath were determined by means of gas chromatography time-of-flight mass spectrometry...
January 19, 2017: Journal of Breath Research
https://www.readbyqxmd.com/read/28102057/periostin-in-exhaled-breath-condensate-and-in-serum-of-asthmatic-patients-relationship-to-upper-and-lower-airway-disease
#6
Aleksandra Wardzyńska, Joanna S Makowska, Małgorzata Pawełczyk, Aleksandra Piechota-Polańczyk, Marcin Kurowski, Marek L Kowalski
PURPOSE: Periostin is considered a biomarker for eosinophilic airway inflammation and have been associated with NSAID-Exacerbated Respiratory Disease (NERD) and chronic rhinosinusitis (CRS). In this study, we aimed to evaluate periostin in exhaled breath condensate (EBC) and in serum of patients with various asthma phenotypes. METHODS: The study included 40 asthmatic patients (22 with NERD) and 17 healthy controls. All the procedures (questionnaire, spirometry, FeNO, nasal swabs, EBC collecting, and blood sampling) were performed on the same day...
March 2017: Allergy, Asthma & Immunology Research
https://www.readbyqxmd.com/read/28101957/summer-co-existence-of-small-sized-cyprinid-and-percid-individuals-in-natural-and-impounded-stretches-of-a-lowland-river-food-niche-partitioning-among-fishes
#7
J Lik, M Dukowska, M Grzybkowska, J Leszczyńska
Due to changes of discharge regime downstream of a dam reservoir, an alluvial natural stretch of the Warta River changed to a macrophyte-dominated ecosystem. Large patches of submersed, aquatic macrophytes appeared in summer and their effect is analysed in this study. These patches contained enriched macroinvertebrate assemblages (epiphyton and benthos) and they were refuge for both zooplankton and young fishes released from the reservoir. Despite these altered conditions in this stretch, roach Rutilus rutilus, perch Perca fluviatilis and ruffe Gymnocephalus cernua dominated, as they did in the natural backwater...
January 18, 2017: Journal of Fish Biology
https://www.readbyqxmd.com/read/28100958/routine-dyspnea-assessment-and-documentation-nurses-experience-yields-wide-acceptance
#8
Kathy M Baker, Susan DeSanto-Madeya, Robert B Banzett
BACKGROUND: Dyspnea (breathing discomfort) is a common and distressing symptom. Routine assessment and documentation can improve management and relieve suffering. A major barrier to routine dyspnea documentation is the concern that it will have a deleterious effect on nursing workflow and that it will not be readily accepted by nurses. Nurses at our institution recently began to assess and document dyspnea on all medical-surgical patients upon admission and once per shift throughout their hospitalization...
2017: BMC Nursing
https://www.readbyqxmd.com/read/28100870/impact-on-clinical-outcomes-of-periodic-leg-movements-during-sleep-in-hospitalized-patients-following-acute-decompensated-heart-failure
#9
Shoichiro Yatsu, Takatoshi Kasai, Shoko Suda, Hiroki Matsumoto, Nanako Shiroshita, Mitsue Kato, Fusae Kawana, Azusa Murata, Takao Kato, Masaru Hiki, Hiroyuki Daida
BACKGROUND: Periodic leg movements during sleep (PLM) are characterized by regularly recurring movement of the legs during sleep. Although PLM is common and a predictor of death in patients with chronic heart failure, the clinical significance of PLM in hospitalized patients with a reduced left ventricular ejection fraction (LVEF) following acute decompensated heart failure (ADHF) remains unknown.Methods and Results:After initial improvement of acute signs and symptoms of ADHF, 94 consecutive patients with reduced LVEF who underwent polysomnography were enrolled...
January 17, 2017: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/28100824/asthma-copd-overlap-syndrome-showed-more-exacerbations-however-lower-mortality-than-copd
#10
J-W Bai, B Mao, W-L Yang, S Liang, H-W Lu, J-F Xu
BACKGROUND: Asthma-chronic obstructive pulmonary disease (COPD) overlap syndrome (ACOS) is a new determinate syndrome whose exact characteristics remain unclear. AIM: The objective of this study is to find more difference between ACOS and COPD. DESIGN: A retrospective study of ACOS and COPD in Chinese. METHODS: Data from 65 patients with ACOS and 65 patients with COPD were retrospectively collected and analyzed. The basis of this study was to compare the two groups while ruling out differences in age, sex and smoking history...
January 18, 2017: QJM: Monthly Journal of the Association of Physicians
https://www.readbyqxmd.com/read/28100802/hydrodynamic-detection-and-localization-of-artificial-flatfish-breathing-currents-by-harbour-seals-phoca-vitulina
#11
Benedikt Niesterok, Yvonne Krüger, Sven Wieskotten, Guido Dehnhardt, Wolf Hanke
Harbour seals are known to be opportunistic feeders, whose diet consists mainly of pelagic and benthic fish, such as flatfish. As flatfish are often cryptic and do not produce noise, we hypothesized that harbour seals are able to detect and localize flatfish using their hydrodynamic sensory system (vibrissae), as fish emit water currents through their gill openings (breathing currents). To test this hypothesis, we created an experimental platform where an artificial breathing current was emitted through one of eight different openings...
January 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28100793/super-sensitive-seal-whiskers-feel-fish-breath
#12
Kathryn Knight
No abstract text is available yet for this article.
January 15, 2017: Journal of Experimental Biology
https://www.readbyqxmd.com/read/28100723/a-respiratory-gated-micro-ct-comparison-of-respiratory-patterns-in-free-breathing-and-mechanically-ventilated-rats
#13
Nancy L Ford, Lynda McCaig, Andrew Jeklin, James F Lewis, Ruud A W Veldhuizen, David W Holdsworth, Maria Drangova
In this study, we aim to quantify the differences in lung metrics measured in free-breathing and mechanically ventilated rodents using respiratory-gated micro-computed tomography. Healthy male Sprague-Dawley rats were anesthetized with ketamine/xylazine and scanned with a retrospective respiratory gating protocol on a GE Locus Ultra micro-CT scanner. Each animal was scanned while free-breathing, then intubated and mechanically ventilated (MV) and rescanned with a standard ventilation protocol (56 bpm, 8 mL/kg and PEEP of 5 cm H2O) and again with a ventilation protocol that approximates the free-breathing parameters (88 bpm, 2...
January 2017: Physiological Reports
https://www.readbyqxmd.com/read/28100570/a-rare-cause-of-constrictive-pericarditis
#14
Shane Patrick Flood, Omar Ayah, Satoshi Furukawa, Robert B Norris
A 67-year-old man presented with 3 months of exertional dyspnoea and 1 week of oedema. Examination revealed elevated neck veins, pulsus paradoxus, muffled heart sounds, decreased breath sounds and pedal oedema. Transthoracic echocardiogram (TTE) demonstrated cardiac tamponade, and chest X-ray showed pleural effusion. Pericardiocentesis, thoracocentesis, laboratory investigations and CT did not elucidate an underlying aetiology. Three weeks later, he presented with recurrent cardiac tamponade and pleural effusion...
January 18, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28100526/comparison-of-different-techniques-of-central-venous-pressure-measurement-in-mechanically-ventilated-critically-ill-patients
#15
C Roger, L Muller, B Riou, N Molinari, B Louart, H Kerbrat, J-L Teboul, J-Y Lefrant
BACKGROUND: Several techniques exist for measuring central venous pressure (CVP) but little information is available about the accuracy of each method. The aim of this study was to compare different methods of CVP measurements in mechanically ventilated patients. METHODS: CVP was measured in mechanically ventilated patients without spontaneous breathing using four different techniques: 1) end expiratory CVP measurement at the base of the" c" wave (CVPMEASURED), chosen as the reference method; 2) CVP measurement from the monitor averaging CVP over the cardiac and respiratory cycles (CVPMONITOR); 3) CVP measurement after a transient withdrawing of mechanical ventilation (CVPNADIR); 4) CVP measurement corrected for the transmitted respiratory pressure induced by intrinsic PEEP (calculated CVP: CVPCALCULATED)...
February 2017: British Journal of Anaesthesia
https://www.readbyqxmd.com/read/28100474/regional-diaphragm-volume-displacement-is-heterogeneous-in-dog
#16
Brooke Greybeck, Raymond Lu, Arvind Ramanujam, Mary Adeyeye, Matthew Wettergreen, Shari Wynd, Aladin M Boriek
Muscle shortening and volume displacement are critical determinants of the pressure generating capacity of the diaphragm. This study was designed to test the hypothesis that diaphragm volume displacement is heterogeneous and distribution of volume displacement is dependent on regional muscle shortening, posture and level of muscle activation. Radio opaque markers were sutured along muscle bundles of the peritoneal surface of the crural muscle, dorsal costal, mid-costal, and ventral costal regions of the left hemi-diaphragm in four dogs...
January 18, 2017: American Journal of Physiology. Regulatory, Integrative and Comparative Physiology
https://www.readbyqxmd.com/read/28100203/diaphragmatic-breathing-during-virtual-reality-exposure-therapy-for-aviophobia-functional-coping-strategy-or-avoidance-behavior-a-pilot-study
#17
Youssef Shiban, Julia Diemer, Jana Müller, Johanna Brütting-Schick, Paul Pauli, Andreas Mühlberger
BACKGROUND: Although there is solid evidence for the efficacy of in vivo and virtual reality (VR) exposure therapy for a specific phobia, there is a significant debate over whether techniques promoting distraction or relaxation have impairing or enhancing effects on treatment outcome. In the present pilot study, we investigated the effect of diaphragmatic breathing (DB) as a relaxation technique during VR exposure treatment. METHOD: Twenty-nine patients with aviophobia were randomly assigned to VR exposure treatment either with or without diaphragmatic breathing (six cycles per minute)...
January 18, 2017: BMC Psychiatry
https://www.readbyqxmd.com/read/28099359/evaluation-of-pulmonary-function-using-single-breath-hold-dual-energy-computed-tomography-with-xenon-results-of-a-preliminary-study
#18
Hiroyuki Kyoyama, Yusuke Hirata, Satoshi Kikuchi, Kosuke Sakai, Yuriko Saito, Shintaro Mikami, Gaku Moriyama, Hisami Yanagita, Wataru Watanabe, Katharina Otani, Norinari Honda, Kazutsugu Uematsu
Xenon-enhanced dual-energy computed tomography (xenon-enhanced CT) can provide lung ventilation maps that may be useful for assessing structural and functional abnormalities of the lung. Xenon-enhanced CT has been performed using a multiple-breath-hold technique during xenon washout. We recently developed xenon-enhanced CT using a single-breath-hold technique to assess ventilation. We sought to evaluate whether xenon-enhanced CT using a single-breath-hold technique correlates with pulmonary function testing (PFT) results...
January 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28099286/multicenter-study-validating-accuracy-of-a-continuous-respiratory-rate-measurement-derived-from-pulse-oximetry-a-comparison-with-capnography
#19
Sergio D Bergese, Michael L Mestek, Scott D Kelley, Robert McIntyre, Alberto A Uribe, Rakesh Sethi, James N Watson, Paul S Addison
BACKGROUND: Intermittent measurement of respiratory rate via observation is routine in many patient care settings. This approach has several inherent limitations that diminish the clinical utility of these measurements because it is intermittent, susceptible to human error, and requires clinical resources. As an alternative, a software application that derives continuous respiratory rate measurement from a standard pulse oximeter has been developed. We sought to determine the performance characteristics of this new technology by comparison with clinician-reviewed capnography waveforms in both healthy subjects and hospitalized patients in a low-acuity care setting...
January 17, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/28099160/phase-shift-between-respiratory-oscillations-in-cerebral-blood-flow-velocity-and-arterial-blood-pressure
#20
Agnieszka Uryga, Michał M Placek, Paweł Wachel, Tomasz Szczepański, Marek Czosnyka, Magdalena Kasprowicz
We aim to investigate whether phase shift between respiratory oscillations in cerebral blood flow velocity (CBFV) and arterial blood pressure (ABP) is associated with changes in cerebral autoregulation (CA) or reflects the mechano-elastic properties of the cerebrovascular bed. The relationships between respiratory phase shift and slow wave phase shift versus cerebrovascular time constant (the product of cerebrovascular resistance and compliance) and the index of CA (Mx) were analyzed during breathing at 6, 10, and 15 breaths min(-1) in 39 volunteers...
January 18, 2017: Physiological Measurement
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