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Respiratory imaging

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https://www.readbyqxmd.com/read/28938276/anesthesia-with-dexmedetomidine-and-low-dose-isoflurane-increases-solute-transport-via-the-glymphatic-pathway-in-rat-brain-when-compared-with-high-dose-isoflurane
#1
Helene Benveniste, Hedok Lee, Fengfei Ding, Qian Sun, Ehab Al-Bizri, Rany Makaryus, Stephen Probst, Maiken Nedergaard, Elliot A Stein, Hanbing Lu
BACKGROUND: The glymphatic pathway transports cerebrospinal fluid through the brain, thereby facilitating waste removal. A unique aspect of this pathway is that its function depends on the state of consciousness of the brain and is associated with norepinephrine activity. A current view is that all anesthetics will increase glymphatic transport by inducing unconsciousness. This view implies that the effect of anesthetics on glymphatic transport should be independent of their mechanism of action, as long as they induce unconsciousness...
September 22, 2017: Anesthesiology
https://www.readbyqxmd.com/read/28934249/variability-in-objective-and-subjective-measures-affects-baseline-values-in-studies-of-patients-with-copd
#2
Wayne H Anderson, Jae Wook Ha, David J Couper, Wanda K O'Neal, R Graham Barr, Eugene R Bleecker, Elizabeth E Carretta, Christopher B Cooper, Claire M Doerschuk, M Bradley Drummond, MeiLan K Han, Nadia N Hansel, Victor Kim, Eric C Kleerup, Fernando J Martinez, Stephen I Rennard, Donald Tashkin, Prescott G Woodruff, Robert Paine, Jeffrey L Curtis, Richard E Kanner
RATIONALE: Understanding the reliability and repeatability of clinical measurements used in the diagnosis, treatment and monitoring of disease progression is of critical importance across all disciplines of clinical practice and in clinical trials to assess therapeutic efficacy and safety. OBJECTIVES: Our goal is to understand normal variability for assessing true changes in health status and to more accurately utilize this data to differentiate disease characteristics and outcomes...
2017: PloS One
https://www.readbyqxmd.com/read/28932982/cerebral-fat-embolism-recognition-complications-and-prognosis
#3
Daniel Agustín Godoy, Mario Di Napoli, Alejandro A Rabinstein
Fat embolism syndrome (FES) is a rare syndrome caused by embolization of fat particles into multiple organs including the brain. It typically manifests with petechial rash, deteriorating mental status, and progressive respiratory insufficiency, usually occurring within 24-48 h of trauma with long-bone fractures or an orthopedic surgery. The diagnosis of FES is based on clinical and imaging findings, but requires exclusion of alternative diagnoses. Although there is no specific treatment for FES, prompt recognition is important because it can avoid unnecessary interventions and clarify prognosis...
September 20, 2017: Neurocritical Care
https://www.readbyqxmd.com/read/28924310/use-of-corticosteroids-in-acute-respiratory-distress-syndrome-perspective-from-an-indian-intensive-care-unit
#4
Naveen G S Chandra, Saraschandra Vallabhajosyula, Barkur A Shastry, Shashaank Vallabhajosyula, Saarwaani Vallabhajosyula, Kavita Saravu
BACKGROUND: Acute respiratory distress syndrome (ARDS) causes overwhelming inflammation, which serves as a potential target for corticosteroids. Despite extensive Western literature, there are no Indian studies evaluating steroids in ARDS. METHODS: This was a retrospective study at an Indian intensive care unit (ICU) on ARDS patients. Demographic, clinical, laboratory, and imaging parameters were collected. Patients were divided into cohorts based on steroid use, and some received high-dose (2 mg/kg/day), whereas others received low-dose (1 mg/kg/day) steroids...
April 2017: Medical Journal, Armed Forces India
https://www.readbyqxmd.com/read/28924136/a-case-of-tracheobronchomalacia-mimicking-acute-pulmonary-embolism
#5
Stefani M Schwartz, Katherine J Greco, Venugopal Reddy
BACKGROUND Pulmonary embolism is a common acute postoperative complication and is associated with 100,000 deaths per year in the USA. Tracheobronchomalacia is an uncommon condition, which presents with similar symptoms to pulmonary embolism, including hypoxemia, tachycardia, and shortness of breath. We describe a case of a patient who presented with postoperative pulmonary symptoms that were initially thought to be due to pulmonary embolism. However, following imaging investigations these symptoms were found to be due to tracheobronchomalacia...
September 19, 2017: American Journal of Case Reports
https://www.readbyqxmd.com/read/28923025/intrafamilial-phenotypic-heterogeneity-in-a-taiwanese-family-with-a-mapt-p-r5h-mutation-a-case-report-and-literature-review
#6
Hui-Chi Lin, Chin-Hsien Lin, Pei-Lung Chen, Shih-Jung Cheng, Pei-Hao Chen
BACKGROUND: Frontotemporal degeneration (FTD) is a clinically and genetically heterogeneous neurodegenerative disorder characterized by deficits in executive function that frequently overlaps with parkinsonism and motor neuron disorders. Several genes have been identified to cause autosomal dominant forms of FTD, including the gene coding for the protein associated with microtubule tau (MAPT). While most reported pathogenic mutations in MAPT occur in exons 9-13, few families have been reported with mutations outside of this region...
September 18, 2017: BMC Neurology
https://www.readbyqxmd.com/read/28922960/cognitive-performance-in-transient-global-hypoxic-brain-injury-due-to-moderate-drowning
#7
Mariana Penteado Nucci, Katerina Lukasova, Gilson Vieira, João Ricardo Sato, Edson Amaro Júnior
INTRODUCTION: Drowning is a serious and frequently neglected public health threat. Primary respiratory impairment after submersion often leads to brain dysfunction. Depending on the period of global hypoxia (respiratory failure), clinical aspects of neurological dysfunction are evident on the first evaluation after the water rescue. Nowadays, many neuropsychological assessments after drowning are inconclusive, with some studies reporting only minor neurological or cognitive impairments...
September 19, 2017: Journal of Clinical and Experimental Neuropsychology
https://www.readbyqxmd.com/read/28922361/impact-of-four-different-recumbencies-on-the-distribution-of-ventilation-in-conscious-or-anaesthetized-spontaneously-breathing-beagle-dogs-an-electrical-impedance-tomography-study
#8
Tamas D Ambrisko, Johannes P Schramel, Ulrike Auer, Yves P S Moens
The aim was to examine the effects of recumbency and anaesthesia on distribution of ventilation in beagle dogs using Electrical Impedance Tomography (EIT). Nine healthy beagle dogs, aging 3.7±1.7 (mean±SD) years and weighing 16.3±1.6 kg, received a series of treatments in a fixed order on a single occasion. Conscious dogs were positioned in right lateral recumbency (RLR) and equipped with 32 EIT electrodes around the thorax. Following five minutes of equilibration, two minutes of EIT recordings were made in each recumbency in the following order: RLR, dorsal (DR), left (LLR) and sternal (SR)...
2017: PloS One
https://www.readbyqxmd.com/read/28921669/respiratory-variation-in-left-ventricular-cardiac-function-with-3d-double-golden-angle-whole-heart-cine-imaging
#9
Karen Holst, Martin Ugander, Andreas Sigfridsson
PURPOSE: To develop a 3-dimensional free-breathing cardiovascular MR technique for quantifying the variation in left ventricular end-diastolic volume (LVEDV) during the respiratory cycle. METHODS: A 3-dimensional radial trajectory with double golden-angle ordering was used for free-running data acquisition during free breathing in healthy volunteers (N = 8). A respiratory self-gating signal was extracted from the center of k-space, and data were retrospectively binned into eight respiratory phases in end-diastole...
September 17, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/28918422/the-modern-art-of-reading-computed-tomography-images-of-the-lungs-quantitative-ct
#10
Felix J F Herth, Miranda Kirby, Jered Sieren, Jonas Herth, Joshua Schirm, Susan Wood, Maren Schuhmann
Lung diseases are increasing in prevalence and overall burden worldwide. To stem the tide, more and more national and international guidelines are recommending the use of various diagnostic algorithms that are disease specific. There is growing consensus among the respiratory community that although patient histories and lung function testing are the minimum required for clinical examinations, these tests alone are not sufficient for disease characterization. Therefore, the use of computed tomography (CT) imaging is increasing used in clinical decision making for lung diseases...
September 16, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28918354/indium-iii-induces-isolated-mitochondrial-permeability-transition-by-inhibiting-proton-influx-and-triggering-oxidative-stress
#11
Lian Yuan, Jiaqi Zhang, Yujiao Liu, Jie Zhao, Fenglei Jiang, Yi Liu
While Indium's toxicity to organs is realized, its effects on mitochondria are still under investigation. Mitochondrial permeability transition (MPT) is widely accepted in mitochondrial dysfunction approaches and its importance in metal-induced mitochondrial degradation has been proposed. Since mitochondria are respiratory organelles, their interaction with free In(3+) is analyzed to access structural and functional changes. Spectral methods and multimode plate reader was used to detect mitochondrial swelling, membrane potential, membrane fluidity, and inner membrane permeability...
September 8, 2017: Journal of Inorganic Biochemistry
https://www.readbyqxmd.com/read/28917680/effusive-constrictive-pericarditis-after-pericardiocentesis-incidence-associated-findings-and-natural-history
#12
Kye Hun Kim, William R Miranda, Larry J Sinak, Faisal F Syed, Rowlens M Melduni, Raul E Espinosa, Garvan C Kane, Jae K Oh
OBJECTIVES: This study sought to investigate the incidence, associated findings, and natural history of effusive-constrictive pericarditis (ECP) after pericardiocentesis. BACKGROUND: ECP is characterized by the coexistence of tense pericardial effusion and constriction of the heart by the visceral pericardium. Echocardiography is currently the main diagnostic tool in the assessment of pericardial disease, but limited data have been published on the incidence and prognosis of ECP diagnosed by echo-Doppler...
September 9, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28917584/pneumatoceles-in-pediatric-blunt-trauma-common-and-benign
#13
Lindsey B Armstrong, David P Mooney
INTRODUCTION: Traumatic pneumatoceles are reported to be rare in children and to have an uncertain clinical significance. We report a single institution series of traumatic pneumatoceles to better define their frequency and clinical significance. METHODS: After obtaining approval from the IRB, data were extracted from the trauma registry of a level 1 pediatric trauma center on children diagnosed with a pulmonary contusion (International Classification of Diseases-9th edition diagnosis codes: 861...
August 7, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28916773/functional-organization-of-cytoplasmic-inclusion-bodies-in-cells-infected-by-respiratory-syncytial-virus
#14
Vincent Rincheval, Mickael Lelek, Elyanne Gault, Camille Bouillier, Delphine Sitterlin, Sabine Blouquit-Laye, Marie Galloux, Christophe Zimmer, Jean-François Eleouet, Marie-Anne Rameix-Welti
Infection of cells by respiratory syncytial virus induces the formation of cytoplasmic inclusion bodies (IBs) where all the components of the viral RNA polymerase complex are concentrated. However, the exact organization and function of these IBs remain unclear. In this study, we use conventional and super-resolution imaging to dissect the internal structure of IBs. We observe that newly synthetized viral mRNA and the viral transcription anti-terminator M2-1 concentrate in IB sub-compartments, which we term "IB-associated granules" (IBAGs)...
September 15, 2017: Nature Communications
https://www.readbyqxmd.com/read/28912165/holistic-care-of-complicated-tuberculosis-in-healthcare-settings-with-limited-resources
#15
Trevor Duke, Sharon Kasa Tom, Harry Poka, Henry Welch
In recent years, most of the focus on improving the quality of paediatric care in low-income countries has been on improving primary care using the Integrated Management of Childhood Illness, and improving triage and emergency treatment in hospitals aimed at reducing deaths in the first 24 hours. There has been little attention paid to improving the quality of care for children with chronic or complex diseases. Children with complicated forms of tuberculosis (TB), including central nervous system and chronic pulmonary TB, provide examples of acute and chronic multisystem paediatric illnesses that commonly present to district-level and second-level referral hospitals in low-income countries...
September 14, 2017: Archives of Disease in Childhood
https://www.readbyqxmd.com/read/28910912/-percutaneous-catheterization-for-extracorporeal-membrane-oxygenation-a-retrospective-case-series
#16
X Y Li, H Y He, X Tang, R Wang, C Y Zhang, S Q Wang, B Sun, Z H Tong
Objective: To review the experience of percutaneous catheterization for extracorporeal membrane oxygenation (ECMO) by respiratory intensivists at a single institution. Methods: A retrospective review of 87 patients undergoing percutaneous catheterization for ECMO in Department of Respiratory and Critical Care Medicine of Beijing Chaoyang Hospital from November 2009 to January 2017. Subject demographics, type of support, cannulation configuration, types of cannulas, use of imaging modalities, and complications were recorded and summarized...
September 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28910212/feasibility-of-paramedic-performed-prehospital-lung-ultrasound-in-medical-patients-with-respiratory-distress
#17
Torben K Becker, Christian Martin-Gill, Clifton W Callaway, Francis X Guyette, Christopher Schott
OBJECTIVE: Prehospital ultrasound is not yet widely implemented. Most studies report on convenience samples and trauma patients, often by prehospital physicians or critical care clinicians. We assessed the feasibility of paramedic performed prehospital lung ultrasound in medical patients with respiratory distress. METHODS: Paramedics at 2 ambulance stations in the city of Pittsburgh, Pennsylvania, USA underwent a 2-hour training session in prehospital lung ultrasound using the SonoSite iViz, a handheld ultrasound device...
September 14, 2017: Prehospital Emergency Care
https://www.readbyqxmd.com/read/28905233/gated-thoracic-magnetic-resonance-angiography-at-3t-noncontrast-versus-blood-pool-contrast
#18
Chengcheng Zhu, Henrik Haraldsson, Kimberly Kallianos, Liang Ge, Elaine Tseng, Travis Henry, David Saloner, Michael D Hope
Both noncontrast and contrast-enhanced approaches to gated thoracic magnetic resonance angiography (MRA) for aortic root evaluation have been reported at 3T. We compare qualitative and quantitative image quality measures for the two approaches, and assess the reproducibility of standard aortic measurements. Respiratory and cardiac gated MRA of the chest was performed at 3T in 45 patients: 23 after administration of iron-based blood pool contrast, and 22 without contrast. Image quality was assessed with a 5-point Likert scale, vessel lumen-to-muscle contrast ratios, and vessel wall sharpness...
September 13, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28904987/respiratory-magnetic-resonance-imaging-biomarkers-in-duchenne-muscular-dystrophy
#19
Ami Mankodi, William Kovacs, Gina Norato, Nathan Hsieh, W Patricia Bandettini, Courtney A Bishop, Hirity Shimellis, Rexford D Newbould, Eunhee Kim, Kenneth H Fischbeck, Andrew E Arai, Jianhua Yao
OBJECTIVE: To examine the diaphragm and chest wall dynamics with cine breathing magnetic resonance imaging (MRI) in ambulatory boys with Duchenne muscular dystrophy (DMD) without respiratory symptoms and controls. METHODS: In 11 DMD boys and 15 controls, cine MRI of maximal breathing was recorded for 10 sec. The lung segmentations were done by an automated pipeline based on a Holistically-Nested Network model (HNN method). Lung areas, diaphragm, and chest wall motion were measured throughout the breathing cycle...
September 2017: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/28904458/can-transcranial-color-doppler-spectral-signatures-be-a-novel-biomarker-for-monitoring-cerebrovascular-autoregulation-and-intracranial-pressure-a-speculative-synthesis
#20
Sandhya Mangalore, Kotresh, Rakshith Srinivasa, Alangar Sathyaranjandas Hegde, Rangashetty Srinivasa
BACKGROUND: Trans Cranial Colour Doppler (TCCD) has been extensively used in various neurological and neurosurgical conditions causing severe raise in the intracranial pressure (ICP). MATERIAL AND METHOD: Our study explores the sequential evolution of TCCD flow pattern by correlating with pupillary reactivity, Glasgow coma scale (GCS), and imaging. Our cohort consisted of thirty patients with ten patients in each subgroup admitted to the neuro-Intensive Care Unit (NICU) for various neurological and neurosurgical causes...
July 2017: Annals of Indian Academy of Neurology
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