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https://www.readbyqxmd.com/read/29683731/bronchiolitis-obliterans-murine-model-induced-by-nitric-acid-aerosol-inhalation-an-economical-and-reproducible-model
#1
Jianing Yin, Xiaobo Ma, Fei Huang, Yucong Ma, Yanan Li
PURPOSE: Bronchiolitis obliterans (BO) is a highly debilitative and fatal syndrome associated with a series of severe lower airway disorders. The pathogenesis of BO is complicated and not entirely understood. An appropriate animal model of BO may aid research into its pathogenesis. Here, we establish a mouse model of BO to provide insight into this disease. MATERIALS AND METHODS: 6-8 week old BABL/c mice were exposed to 5% nitric acid (NA) aerosol through a nebulizer for 3 hours, and controls were exposed to distilled water instead...
April 23, 2018: Experimental Lung Research
https://www.readbyqxmd.com/read/29683104/association-of-epicardial-fat-thickness-with-clinical-and-polysomnographic-parameters-in-non-obese-obstructive-sleep-apnoea-patients
#2
S Derin, I Altun, S Koseoglu, C Sahin, M Yilmaz, F Akin, M Sahan
OBJECTIVES: This study aimed to investigate the relationship of epicardial fat thickness with severity of obstructive sleep apnoea, and clinical and polysomnographic parameters, and to determine independent predictors for epicardial fat thickness. METHODS: A total of 84 patients with a body mass index of less than 30 kg/m2 and suspected sleep-disordered breathing were included in the study. The correlations of epicardial fat thickness with polysomnographic and clinical data, and severity of obstructive sleep apnoea, were investigated...
April 23, 2018: Journal of Laryngology and Otology
https://www.readbyqxmd.com/read/29682002/household-air-pollution-hap-microenvironment-and-child-health-strategies-for-mitigating-hap-exposure-in-urban-rwanda
#3
Ipsita Das, Joseph Pedit, Sudhanshu Handa, Pamela Jagger
Exposure to household air pollution (HAP) from cooking and heating with solid fuels is major risk factor for morbidity and mortality in sub-Saharan Africa. Children under five are particularly at risk for acute lower respiratory infection. We use baseline data from randomized controlled trial evaluating a household energy intervention in Gisenyi, Rwanda to investigate the role of the microenvironment as a determinant of children's HAP-related health symptoms. Our sample includes 529 households, with 694 children under five...
2018: Environmental Research Letters: ERL [Web Site]
https://www.readbyqxmd.com/read/29681276/diffusion-based-humidity-control-membrane-for-microfluidic-based-gas-detectors
#4
Mohammad Paknahad, Jannat Singh Bachhal, Mina Hoorfar
This paper presents a cost-effective and reliable diffusion-based humidity removal membrane for microfluidic-based gas analyzers. The developed humidity control device reduces the relative humidity of a gas chamber and also stabilizes the humidity using inexpensive inorganic salts. A 3D-printed microfluidic gas sensor is used to test four different volatile organic compounds (VOCs) including three alcohols and one ketone in different relative humidity levels ranging from 15% to 80%. To study the effects of humidity on different features of the transient response of the sensor, two different feature extraction methods are used...
August 27, 2018: Analytica Chimica Acta
https://www.readbyqxmd.com/read/29681008/micromanaging-freeze-tolerance-the-biogenesis-and-regulation-of-neuroprotective-micrornas-in-frozen-brains
#5
Hanane Hadj-Moussa, Kenneth B Storey
When temperatures plummet below 0 °C, wood frogs (Rana sylvatica) can endure the freezing of up to ~ 65% of their body water in extracellular ice masses, displaying no measurable brain activity, no breathing, no movement, and a flat-lined heart. To aid survival, frogs retreat into a state of suspended animation characterized by global suppression of metabolic functions and reprioritization of energy usage to essential survival processes that is elicited, in part, by the regulatory controls of microRNAs...
April 21, 2018: Cellular and Molecular Life Sciences: CMLS
https://www.readbyqxmd.com/read/29680435/comparison-of-two-exhaled-biomarkers-in-children-with-and-without-sleep-disordered-breathing
#6
Mario Barreto, Paolo Montuschi, Melania Evangelisti, Susanna Bonafoni, Manuela Cecili, Rugia Shohreh, Giuseppe Santini, Maria Pia Villa
OBJECTIVE: Airway oxidative stress and inflammation are likely to be involved in sleep disordered breathing (SDB) in children. We aimed to measure concentrations of 8-isoprostane (8-IsoP) in the exhaled breath condensate (EBC) and exhaled nitric oxide (FENO ) in patients with SBD and healthy children, in order to assess the relationship between these two biomarkers, disease severity, and overnight changes. METHODS: Patients with SDB (n = 46) and healthy controls (n = 20) aged 4...
May 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29680431/occurrence-of-nocturia-is-not-mediated-by-nocturnal-hypoxia-length-and-severity-in-patients-with-sleep-disordered-breathing
#7
P Finamore, S Scarlata, A Laudisio, F Galdi, M E Pipita, I Chiarella, R Giua, L Cortese, C Rivera, R Antonelli Incalzi
BACKGROUND: Nocturia is highly prevalent in subjects with respiratory sleep disturbances (ie obstructive sleep apnea). The aim of our study is to evaluate whether nocturia is associated with intermittent desaturations or hypoxia length and severity in people undergoing polysomnography. METHODS: We recruited 275 consecutive subjects attending the outpatient clinic for respiratory diseases at Campus Bio-Medico Teaching Hospital. Nocturia was defined as a self-reported voiding frequency ≥ two per night...
May 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29680422/effect-of-kidney-transplantation-on-sleep-disordered-breathing-in-patients-with-end-stage-renal-disease-a-polysomnographic-study
#8
Sanjiv Mahajan, Kartik Gupta, Sanjeev Sinha, Atul Malhotra, Sandeep Mahajan
BACKGROUND: Sleep-disordered breathing (SDB) is common in patients with end-stage renal disease (ESRD). SDB is associated with comorbidities such as hypertension, diabetes mellitus, and obesity, interplaying with metabolic derangements in the form of uremia, acidosis, and hypervolemia. Renal transplant has been observed to correct most of these metabolic derangements and to control progression of comorbidities. While SDB is highly prevalent among patients in the pretransplant stage, it remains to be seen whether the beneficial aspects of transplant are extended to improvement in SDB in patients with ESRD...
May 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29680416/electrocardiographic-variables-in-children-with-syndromic-craniosynostosis-and-primary-snoring-to-mild-obstructive-sleep-apnea-significance-of-identifying-respiratory-arrhythmia-during-sleep
#9
Ellaha Kakar, Linda J A Corel, Robert C Tasker, Robbin de Goederen, Eppo B Wolvius, Irene M J Mathijssen, Koen F M Joosten
BACKGROUND: In the spectrum of children with symptomatic sleep disordered breathing (SDB), some individuals - such as those with upper airway resistance syndrome (UARS) - do not have abnormalities on polysomnography (PSG). In this study we have assessed whether assessment of respiratory arrhythmia (RA) and heart rate variability (HRV) analysis helps in management of children with syndromic craniosynostosis and none-to-mild obstructive sleep apnea (OSA). METHODS: Prospective cohort study in children aged 1-18 years old with syndromic craniosynostosis...
May 2018: Sleep Medicine
https://www.readbyqxmd.com/read/29679174/sleep-abnormalities-in-multiplesystem-atrophy
#10
REVIEW
Valérie Cochen De Cock
PURPOSE OF REVIEW: The purpose of this review was to explore the different sleep disorders associated with MSA, their mechanisms, and their treatments. RECENT FINDINGS: Stridor is a red flag for the diagnosis of MSA. Recent findings show that its presence in early stage of the disease is associated with a reduction in life expectancy. Its management should be fast and adapted. Its treatment with continuous positive airway pressure or tracheostomy is efficacious...
April 20, 2018: Current Treatment Options in Neurology
https://www.readbyqxmd.com/read/29678727/assessment-of-thoracic-blood-volume-by-computed-tomography-in-patients-with-heart-failure-and-periodic-breathing
#11
Caitlin C Fermoyle, Steven C Chase, Lyle J Olson, Bruce D Johnson
BACKGROUND: Periodic breathing (PB) is often observed in patients with HF at rest, with sleep and during exercise. However, mechanisms underlying abnormal ventilatory control are not entirely established. METHODS: Eleven subjects with HF (10M, age=69±12yr) and 12 age-matched controls (8M, age=65±9yr) participated in the study. PB was defined as a peak in the 0.003-0.04Hz frequency range of the flow signal during 6-minutes of awake resting breathing. Thoracic blood volumes (Vt , thorax; Vh , heart; Vp , pulmonary), mean transit times (MTT) and extravascular lung water (EVLW) were quantified using computed tomography...
April 17, 2018: Journal of Cardiac Failure
https://www.readbyqxmd.com/read/29676798/afferent-neural-feedback-overrides-the-modulating-effects-of-arousal-hypercapnia-and-hypoxemia-on-neonatal-cardio-respiratory-control
#12
Kathleen J Lumb, Jennifer M Schneider, Thowfique Ibrahim, Anita Rigaux, Shabih U Hasan
KEY POINTS: Evidence at whole animal, organ-system, and cellular and molecular levels suggests that afferent volume feedback is critical for establishment of adequate ventilation at birth. Due to the irreversible nature of vagal ablation studies to date, it was difficult to quantify the roles of afferent volume input, arousal and changes in blood gas tensions on neonatal respiratory control. During reversible perineural vagal block, profound apneas, and hypoxemia and hypercarbia were observed necessitating termination of perineural blockade...
April 20, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29674994/a-cross-sectional-study-on-cerebral-hemodynamics-after-mild-traumatic-brain-injury-in-a-pediatric-population
#13
Corey M Thibeault, Samuel Thorpe, Michael J O'Brien, Nicolas Canac, Mina Ranjbaran, Ilyas Patanam, Artin Sarraf, James LeVangie, Fabien Scalzo, Seth J Wilk, Ramon Diaz-Arrastia, Robert B Hamilton
The microvasculature is prominently affected by traumatic brain injury (TBI), including mild TBI (concussion). Assessment of cerebral hemodynamics shows promise as biomarkers of TBI, and may help inform development of therapies aimed at promoting neurologic recovery. The objective of this study was to assess the evolution in cerebral hemodynamics observable with transcranial Doppler (TCD) ultrasound in subjects suffering from a concussion at different intervals during recovery. Pediatric subjects between the ages of 14 and 19 years clinically diagnosed with a concussion were observed at different points post-injury...
2018: Frontiers in Neurology
https://www.readbyqxmd.com/read/29672464/effects-of-breathing-motion-on-pet-acquisitions-step-and-shoot-versus-continuous-bed-motion
#14
Yoshiki Owaki, Tadaki Nakahara, Takeshi Shimizu, Anne M Smith, Wing K Luk, Kazumasa Inoue, Masahiro Fukushi, Kiyotaka Nakajima
OBJECTIVES: Continuous bed motion (CBM) acquisition recently became available in whole-body PET/CT scanners in addition to the conventional step and shoot (S&S) acquisition. In this work, we compared the image quality between these acquisition methods using a phantom simulating periodic motion to mimic motion from patient breathing in a controlled manner. METHODS: PET image quality was assessed using the National Electrical Manufacturers Association IQ torso phantom filled with an F-FDG solution using a 4 : 1 target-to-background ratio...
April 18, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29671866/isocapnic-hyperventilation-provides-early-extubation-after-head-and-neck-surgery-a-prospective-randomized-trial
#15
K Hallén, P Jildenstål, O Stenqvist, J Oras, S-E Ricksten, S Lindgren
BACKGROUND: Isocapnic hyperventilation (IHV) shortens recovery time after inhalation anaesthesia by increasing ventilation while maintaining a normal airway carbon dioxide (CO2 )-level. One way of performing IHV is to infuse CO2 to the inspiratory limb of a breathing circuit during mechanical hyperventilation (HV). In a prospective randomized study, we compared this IHV technique to a standard emergence procedure (control). METHODS: Thirty-one adult ASA I-III patients undergoing long-duration (>3 hours) sevoflurane anaesthesia for major head and neck surgery were included and randomized to IHV-treatment (n = 16) or control (n = 15)...
April 19, 2018: Acta Anaesthesiologica Scandinavica
https://www.readbyqxmd.com/read/29667507/effect-of-inspiratory-muscle-training-imt-on-aerobic-capacity-respiratory-muscle-strength-and-rate-of-perceived-exertion-in-paraplegics
#16
Sonali Soumyashree, Jaskirat Kaur
OBJECTIVES: The purpose is to study the effect of inspiratory muscle training on aerobic capacity, respiratory muscle strength and rate of perceived exertion in paraplegics. STUDY DESIGN: Randomized controlled trial. SETTINGS: Rehabilitation department in Indian Spinal Injuries Centre, New Delhi. PARTICIPANTS: A sample of 30 paraplegics (T1-T12) were randomly allocated into two groups: inspiratory muscle training (IMT) group and control group...
April 18, 2018: Journal of Spinal Cord Medicine
https://www.readbyqxmd.com/read/29666655/determinants-of-chronic-respiratory-symptoms-among-pharmaceutical-factory-workers
#17
Sahle Asfaw, Fikre Enquselassie, Yifokire Tefera, Muluken Gizaw, Samson Wakuma, Messay Woldemariam
Background: Chronic respiratory symptoms including chronic cough, chronic phlegm, wheezing, shortness of breath, and chest pain are manifestations of respiratory problems which are mainly evolved as a result of occupational exposures. This study aims to assess determinants of chronic respiratory symptoms among pharmaceutical factory workers. Methods: A case control study was carried out among 453 pharmaceutical factory workers with 151 cases and 302 controls. Data was collected using pretested and structured questionnaire...
2018: Journal of Tropical Medicine
https://www.readbyqxmd.com/read/29666295/lung-ultrasound-prior-to-spontaneous-breathing-trial-is-not-helpful-in-weaning-the-decision-making-process
#18
Ana Carolina P Antonio, Marli M Knorst, Cassiano Teixeira
BACKGROUND: Lung ultrasound is increasingly becoming a diagnostic tool in the critical care setting. B-pattern on a lung ultrasound is an artifact composed of multiple B-lines and correlates with interstitial edema. A randomized controlled trial concluded that bedside thoracic ultrasound could predict postextubation distress through changes in lung aeration during a weaning procedure; however, it could not screen patients before performance of a spontaneous breathing trial (SBT). METHODS: We conducted a 2-year, prospective, multicenter, observational study in 2 adult medical-surgical ICUs in southern Brazil...
April 17, 2018: Respiratory Care
https://www.readbyqxmd.com/read/29664049/increased-serum-cystatin-c-in-early-parkinson-s-disease-with-objective-sleep-disturbances
#19
Kang-Ping Xiong, Yong-Ping Dai, Jing Chen, Jin-Min Xu, Yi Wang, Ping Feng, Shou-Jiang You, Chun-Feng Liu
Background: Sleep disturbance is one of the major non-motor symptoms which cause the disability of Parkinson's disease (PD) patients. Cystatin C (CysC) is a more sensitive biomarker than serum creatinine or estimated glomerular filtration rate. Previous studies have reported altered CysC levels in neurodegenerative disorders and sleep disorders. This study aimed to explore the correlations of serum CysC levels and objective sleep disturbances in early PD. Methods: We recruited 106 early PD patients and 146 age- and sex-matched controls...
April 20, 2018: Chinese Medical Journal
https://www.readbyqxmd.com/read/29661389/esketamine-counters-opioid-induced-respiratory-depression
#20
K Jonkman, E van Rijnsoever, E Olofsen, L Aarts, E Sarton, M van Velzen, M Niesters, A Dahan
BACKGROUND: Opioids can produce life-threatening respiratory depression. This study tested whether subanaesthetic doses of esketamine stimulate breathing in an established human model of opioid-induced respiratory depression. METHODS: In a study with a randomised, double blind, placebo controlled, crossover design, 12 healthy, young volunteers of either sex received a dose escalating infusion of esketamine (cumulative dose 40 mg infused in 1 h) on top of remifentanil-induced respiratory depression...
May 2018: British Journal of Anaesthesia
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