keyword
MENU ▼
Read by QxMD icon Read
search

Work of breathing

keyword
https://www.readbyqxmd.com/read/27903201/nutrition-in-the-intensive-care-unit-you-must-breathe-what-you-eat
#1
John F Cade, Daryl A Jones, Rinaldo Bellomo
The imprecision in prescribing of enteral nutrition in critically ill patients must result in occasions of overfeeding as well as underfeeding. Overfeeding could cause increased CO2 production and thus increased work of breathing and prolonged ventilator dependence. This possibility is supported by the limited relevant literature. We examined this possibility mathematically using the data in The Augmented versus Routine Approach to Giving Energy Trial (TARGET) feasibility study and in its main study protocol...
December 2016: Critical Care and Resuscitation: Journal of the Australasian Academy of Critical Care Medicine
https://www.readbyqxmd.com/read/27890460/prevalence-of-small-intestinal-bacterial-overgrowth-in-multiple-sclerosis-a-case-control-study-from-china
#2
Yongbo Zhang, Guoyi Liu, Yuanli Duan, Xinwen Han, Huihua Dong, Jia Geng
OBJECTIVE: It's hypothesized that gastrointestinal microbiota might play an important role in pathogenesis of multiple sclerosis (MS). The aim of the present study was to assess the prevalence of small intestinal bacterial overgrowth (SIBO) in MS patients compared with sex and age matched controls without MS. METHODS: The present study was a case-control type, it included 118 patients with definitive MS and 118 age-sex matched controls. Progression of disability was assessed using the Multiple Sclerosis Severity Score (MSSS)...
November 16, 2016: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/27888983/high-flow-nasal-cannula-versus-conventional-oxygen-therapy-and-non-invasive-ventilation-in-adults-with-acute-hypoxemic-respiratory-failure-a-systematic-review
#3
REVIEW
Chi Chan Lee, Dhruti Mankodi, Sameer Shaharyar, Sharmila Ravindranathan, Mauricio Danckers, Pablo Herscovici, Molly Moor, Gustavo Ferrer
INTRODUCTION: Humidified oxygen via a high flow nasal cannula (HFNC) is a form of supplemental oxygen therapy that has significant theoretical advantages over conventional oxygen therapy (COT). However, the clinical role of HFNC in acute hypoxemic respiratory failure (AHRF) has not been well established. This review compares the efficacy of HFNC with COT and non-invasive ventilation (NIV) in patients with AHRF. METHODS: Studies reviewed were selected based on relevance from a systematic literature search conducted in Medline and EMBASE to include all published original research through May 2016...
December 2016: Respiratory Medicine
https://www.readbyqxmd.com/read/27888058/cerebrovascular-reactivity-mapping-without-gas-challenges
#4
Peiying Liu, Yang Li, Marco Pinho, Denise C Park, Babu G Welch, Hanzhang Lu
Cerebrovascular reactivity (CVR), the ability of cerebral vessels to dilate or constrict, has been shown to provide valuable information in the diagnosis and treatment evaluation of patients with various cerebrovascular conditions. CVR mapping is typically performed using hypercapnic gas inhalation as a vasoactive challenge while collecting BOLD images, but the inherent need of gas inhalation and the associated apparatus setup present a practical obstacle in applying it in routine clinical use. Therefore, we aimed to develop a new method to map CVR using resting-state BOLD data without the need of gas inhalation...
November 22, 2016: NeuroImage
https://www.readbyqxmd.com/read/27875282/metabolic-requirement-of-septic-shock-patients-before-and-after-liberation-from-mechanical-ventilation
#5
Peggy Siu-Pik Lee, Kar Lung Lee, James A Betts, Kin Ip Law
OBJECTIVES: This study identified the difference in energy expenditure and substrate utilization of patients during and upon liberation from mechanical ventilation. METHODS: Patients under intensive care who were diagnosed with septic shock and dependent on mechanical ventilation were recruited. Indirect calorimetry measurements were performed during and upon liberation from mechanical ventilation. RESULTS: Thirty-five patients were recruited (20 men and 15 women; mean age, 69 ± 10 years)...
October 3, 2016: JPEN. Journal of Parenteral and Enteral Nutrition
https://www.readbyqxmd.com/read/27875128/towards-a-robust-estimation-of-respiratory-rate-from-pulse-oximeters
#6
Marco A F Pimentel, Alistair E W Johnson, Peter H Charlton, Drew Birrenkott, Peter J Watkinson, Lionel Tarassenko, David A Clifton
OBJECTIVE: Current methods for estimating respiratory rate (RR) from the photoplethysmogram (PPG) typically fail to distinguish between periods of high- and low-quality input data, and fail to perform well on independent "validation" datasets. The lack of robustness of existing methods directly results in a lack of penetration of such systems into clinical practice. The present work proposes an alternative method to improve the robustness of the estimation of RR from the PPG. METHODS: The proposed algorithm is based on the use of multiple autoregressive models of different orders for determining the dominant respiratory frequency in the three respiratory-induced variations (frequency, amplitude and intensity) derived from the PPG...
November 18, 2016: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/27871083/work-of-breathing-in-fixed-and-pressure-relief-continuous-positive-airway-pressure-c-flex%C3%A2-a-post-hoc-analysis
#7
Lukas Jerrentrup, Sebastian Canisius, Susanne Wilhelm, Karl Kesper, Thomas Ploch, Claus Vogelmeier, Timm Greulich, Heinrich F Becker
BACKGROUND: Expiratory pressure relief continuous positive airway pressure (pressure relief CPAP; C-Flex™) causes increases in inspiratory duty cycle and shortening of expiratory time. It has been suggested that these changes are caused by an increase in work of breathing. OBJECTIVES: We studied the effects of C-Flex on work of breathing and intrinsic positive end-expiratory pressure as compared to fixed CPAP. METHODS: Work of breathing was analyzed in 24 patients with obstructive sleep apnea during treatment with fixed CPAP and C-Flex with 3 different pressure relief settings in a randomized order during rapid-eye-movement (REM) and non-REM sleep...
November 22, 2016: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/27870588/assessment-of-paramedic-performance-on-difficult-airway-simulation
#8
Ashish R Panchal, Geoffrey Finnegan, David P Way, Thomas Terndrup
OBJECTIVE: Airway management is a common, important intervention for critically ill patients in the United States. A key element of prehospital airway management is endotracheal intubation (ETI). Prehospital ETI success rates have been shown to be as low as 77% compared to in-hospital rates of 95%. Given these rates, the use of backup airway devices is a necessary precaution for patient safety. The extent to which paramedics integrate backup airway use into their airway algorithm is unknown...
November 21, 2016: Prehospital Emergency Care
https://www.readbyqxmd.com/read/27869302/brain-function-is-linked-to-ldl-cholesterol-in-older-adults-with-cardiovascular-risk
#9
Liesel-Ann C Meusel, Nicole D Anderson, Matthew D Parrott, William Yuen, Ekaterina Tchistiakova, Bradley J MacIntosh, Sid Feldman, Carol E Greenwood
OBJECTIVES: To determine how cardiovascular risk is associated with working memory task performance and task-related suppression of default-mode network (DMN) activity in cognitively intact older adults. DESIGN: A cross-sectional functional magnetic resonance imaging study of older adults with cardiovascular risk factors. SETTING: Rotman Research Institute, Baycrest Health Sciences. PARTICIPANTS: Thirty older adults with cardiovascular risk factors...
November 21, 2016: Journal of the American Geriatrics Society
https://www.readbyqxmd.com/read/27862507/accelerated-ferumoxytol-enhanced-4d-multiphase-steady-state-imaging-with-contrast-enhancement-music-cardiovascular-mri-validation-in-pediatric-congenital-heart-disease
#10
Ziwu Zhou, Fei Han, Stanislas Rapacchi, Kim-Lien Nguyen, Daniel Z Brunengraber, Grace-Hyun J Kim, J Paul Finn, Peng Hu
The purpose of this work was to validate a parallel imaging (PI) and compressed sensing (CS) combined reconstruction method for a recently proposed 4D non-breath-held, multiphase, steady-state imaging technique (MUSIC) cardiovascular MRI in a cohort of pediatric congenital heart disease patients. We implemented a graphics processing unit accelerated CS-PI combined reconstruction method and applied it in 13 pediatric patients who underwent cardiovascular MRI after ferumoxytol administration. Conventional breath-held contrast-enhanced magnetic resonance angiography (CE-MRA) was first performed during the first pass of ferumoxytol injection, followed by the original MUSIC and the proposed CS-PI MUSIC during the steady-state distribution phase of ferumoxytol...
November 11, 2016: NMR in Biomedicine
https://www.readbyqxmd.com/read/27862032/pleural-drop-metastases-21-years-after-resection-of-a-thymoma
#11
Chia-Chun Chiang, Angela M Parsons, J Scott Kriegshauser, Harshita R Paripati, Matthew A Zarka, A Arturo Leis
INTRODUCTION: We describe an unusual case of pleural drop metastases 21 years after complete resection of an encapsulated thymoma in a Southeast Asian with myasthenia gravis (MG). METHODS: Case report and review of literature. RESULTS: The patient presented in 2015 with generalized weakness, fatigue, and shortness of breath, but no diplopia, ptosis, dysphagia, or dysarthria. Because these symptoms were atypical for an MG exacerbation, a de novo work-up was performed...
November 16, 2016: Muscle & Nerve
https://www.readbyqxmd.com/read/27857964/women-with-postpartum-weight-retention-have-delayed-wake-times-and-decreased-sleep-efficiency-during-the-perinatal-period-a-brief-report
#12
K M Sharkey, G M Boni, J A Quattrucci, S Blatch, S N Carr
OBJECTIVE: This study assessed sleep and circadian rhythms across the perinatal period in new mothers with and without postpartum weight retention (PPWR). METHODS: Weight was measured at 2 and 16 weeks postpartum in 21 women with previous major depression or bipolar disorder (mean age 29.5±4.7 years) who self-reported pre-pregnancy weight during third trimester. Wrist actigraphy was acquired at 33 weeks gestation and postpartum weeks 2, 6, and 16. Circadian phase was measured at 33 weeks gestation and 6 weeks postpartum...
September 2016: Sleep Health
https://www.readbyqxmd.com/read/27852328/a-pilot-program-of-knowledge-translation-and-implementation-for-newborn-resuscitation-using-us-peace-corps-volunteers-in-rural-madagascar
#13
Kristin Close, Michele Karel, Michelle White
BACKGROUND: Prevention of adverse perinatal outcome using the Helping Babies Breathe (HBB) neonatal resuscitation algorithm can reduce perinatal mortality in low income settings. Mercy Ships is a non-governmental organisation providing free healthcare education in sub-Saharan Africa and in an attempt to reach more rural areas of Madagascar with our neonatal resuscitation training we designed a novel approach in collaboration with US Peace Corps Volunteers (PCV). PCVs work in rural areas and contribute to locally determined public health initiatives...
November 16, 2016: Globalization and Health
https://www.readbyqxmd.com/read/27851882/uncovering-a-third-dissolved-phase-129-xe-resonance-in-the-human-lung-quantifying-spectroscopic-features-in-healthy-subjects-and-patients-with-idiopathic-pulmonary-fibrosis
#14
Scott H Robertson, Rohan S Virgincar, Elianna A Bier, Mu He, Geoffrey M Schrank, Rose Marie Smigla, Craig Rackley, H Page McAdams, Bastiaan Driehuys
PURPOSE: The purpose of this work was to accurately characterize the spectral properties of hyperpolarized (129)Xe in patients with idiopathic pulmonary fibrosis (IPF) compared to healthy volunteers. METHODS: Subjects underwent hyperpolarized (129)Xe breath-hold spectroscopy, during which 38 dissolved-phase free induction decays (FIDs) were acquired after reaching steady state (echo time/repetition time = 0.875/50 ms; bandwidth = 8.06 kHz; flip angle≈22 °)...
November 8, 2016: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/27845786/cf3-and-cf2h-new-reagents-for-n-alkane-determination-in-chemical-ionisation-reaction-mass-spectrometry
#15
Robert S Blake, Saleh A Ouheda, Corey J Evans, Paul S Monks
Alkanes provide a particular analytical challenge to commonly used chemical ionisation methods such as proton-transfer from water owing to their basicity. It is demonstrated that the fluorocarbon ions CF3(+) and CF2H(+), generated from CF4, as reagents provide an effective means of detecting light n-alkanes in the range C2-C6 using direct chemical ionisation mass spectrometry. The present work assesses the applicability of the reagents in Chemical Ionisation Mass Spectrometric (CI-TOF-MS) environments with factors such as high moisture content, operating pressures of 1-10 Torr, accelerating electric fields (E/N) and long-lived intermediate complex formation...
November 15, 2016: Analyst
https://www.readbyqxmd.com/read/27845494/monitoring-of-airborne-biological-particles-in-outdoor-atmosphere-part-2-metagenomics-applied-to-urban-environments
#16
EDITORIAL
Andrés Núñez, Guillermo Amo de Paz, Alberto Rastrojo, Ana M García, Antonio Alcamí, A Montserrat Gutiérrez-Bustillo, Diego A Moreno
The air we breathe contains microscopic biological particles such as viruses, bacteria, fungi and pollen, some of them with relevant clinic importance. These organisms and/or their propagules have been traditionally studied by different disciplines and diverse methodologies like culture and microscopy. These techniques require time, expertise and also have some important biases. As a consequence, our knowledge on the total diversity and the relationships between the different biological entities present in the air is far from being complete...
June 2016: International Microbiology: the Official Journal of the Spanish Society for Microbiology
https://www.readbyqxmd.com/read/27842581/impact-of-occupational-exposures-on-exacerbation-of-asthma-a-population-based-asthma-cohort-study
#17
Jeong-Lim Kim, Paul K Henneberger, Susanna Lohman, Anna-Carin Olin, Anna Dahlman-Höglund, Eva Andersson, Kjell Torén, Mathias Holm
BACKGROUND: Asthma is a prevalent chronic disease and occupation contributes to approximately 15 % of cases among adults. However, there are still few studies on risk factors for work-exacerbated asthma. The current study investigated the association between asthma exacerbations and occupational exposures. METHODS: The study comprised all currently working adults (n = 1356) who reported ever asthma in prior population-based cohorts. All subjects completed a questionnaire about exposures, occupations and exacerbations of asthma...
November 15, 2016: BMC Pulmonary Medicine
https://www.readbyqxmd.com/read/27836765/nasal-breathing-and-the-vertical-dimension-a-cephalometric-study
#18
Amal El Aouame, Asmaa Daoui, Farid El Quars
INTRODUCTION: The aim of this work was to perform a cephalometric analysis of the craniofacial parameters and natural head posture of mouth-breathers compared with control subjects, and to study the relationship between nose-breathing and the vertical dimension. MATERIAL AND METHODS: The headfilms taken at start of treatment of 53 cases (28 girls, 25 boys) aged 9 to 30 who consulted the dento-facial orthopedic department of the Ibn Rochd Casablanca dental consultation and treatment center were studied...
November 8, 2016: International Orthodontics
https://www.readbyqxmd.com/read/27835006/stochastic-thermodynamics-of-a-particle-in-a-box
#19
Zongping Gong, Yueheng Lan, H T Quan
The piston system (particles in a box) is the simplest paradigmatic model in traditional thermodynamics. However, the recently established framework of stochastic thermodynamics (ST) fails to apply to this model system due to the embedded singularity in the potential. In this Letter, we study the ST of a particle in a box by adopting a novel coordinate transformation technique. Through comparing with the exact solution of a breathing harmonic oscillator, we obtain analytical results of work distribution for an arbitrary protocol in the linear response regime and verify various predictions of the fluctuation-dissipation relation...
October 28, 2016: Physical Review Letters
https://www.readbyqxmd.com/read/27832718/mind-body-interventions-for-vasomotor-symptoms-in-healthy-menopausal-women-and-breast-cancer-survivors-a-systematic-review
#20
Evgenia Stefanopoulou, Elizabeth Alice Grunfeld
Mind-body therapies are commonly recommended to treat vasomotor symptoms, such as hot flushes and night sweats (HFNS). The purpose of this systematic review was to evaluate the available evidence to date for the efficacy of different mind-body therapies to alleviate HFNS in healthy menopausal women and breast cancer survivors. Randomized controlled trials (RCTs) were identified using seven electronic search engines, direct searches of specific journals and backwards searches through reference lists of related publications...
November 11, 2016: Journal of Psychosomatic Obstetrics and Gynaecology
keyword
keyword
30245
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"