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Airway obstruction

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https://www.readbyqxmd.com/read/28432267/assessment-of-lung-function-in-a-large-cohort-of-patients-with-acromegaly
#1
Sylvere Störmann, Bodo Gutt, Josefine Roemmler-Zehrer, Martin Bidlingmaier, Rudolf Maria Huber, Jochen Schopohl, Matthias Angstwurm
OBJECTIVE: Acromegaly is associated with increased mortality due to respiratory disease. To date, lung function in patients with acromegaly has only been assessed in small studies, with contradicting results. We assessed lung function parameters in a large cohort of patients with acromegaly. DESIGN: Lung function of acromegaly patients was prospectively assessed using spirometry, blood gas analysis and body plethysmography. Biochemical indicators of acromegaly were assessed through measurement of growth hormone and IGF-I levels...
April 21, 2017: European Journal of Endocrinology
https://www.readbyqxmd.com/read/28431781/clenbuterol-hydrochloride
#2
Abdulrahman A Al-Majed, Nasr Y Khalil, Ibraheem Khbrani, Hatem A Abdel-Aziz
Clenbuterol (Broncodil and trade) is a direct-acting sympathomimetic agent with mainly beta-adrenergic activity and a selective action on β2 receptors (a β2 agonist). It has properties similar to those of salbutamol. It is used as a bronchodilator in the management of reversible airways obstruction, as in asthma and in certain patients with chronic obstructive pulmonary disease. The uses, applications, and the synthetic pathways of this drug are outlined. Physical characteristics including: ionization constant, solubility, X-ray powder diffraction pattern, thermal methods of analysis, UV spectrum, IR spectrum, mass spectrum are all produced...
2017: Profiles of Drug Substances, Excipients, and related Methodology
https://www.readbyqxmd.com/read/28429032/obstructive-sleep-apnoea-and-type-2-diabetes-mellitus-are-they-connected
#3
Yingjuan Mok, Chee Wei Tan, Hang Siang Wong, Choon How How, Kah Leong Alvin Tan, Pon Poh Hsu
Obstructive sleep apnoea (OSA), a sleep-related breathing condition, is diagnosed based on a patient's apnoea-hypopnea index from a sleep study, and the presence or absence of symptoms. Diabetes mellitus (DM) and OSA share a significant common risk factor, obesity, with all three conditions contributing to the risk of developing cardiovascular diseases. The pathophysiological links between OSA and DM are still unclear, but intermittent hypoxia may be an important mechanism. More awareness of the possible link between OSA and DM is needed, given their increasing prevalence locally and worldwide...
April 2017: Singapore Medical Journal
https://www.readbyqxmd.com/read/28427836/adherence-to-continuous-positive-airway-pressure-in-adults-with-an-intellectual-disability
#4
Kim A Luijks, Nele L Vandenbussche, Dirk Pevernagie, Sebastiaan Overeem, Sigrid Pillen
STUDY OBJECTIVES: This retrospective study evaluated the feasibility of continuous positive airway pressure (CPAP) therapy in adults with intellectual disabilities (ID). METHODS: CPAP therapy of 24 obstructive sleep apnea syndrome (OSA) patients with ID were compared to age- and sex-matched adults with normal cognitive functioning. All ID patients received an intensive in-hospital training protocol to stimulate adherence. Good adherence was defined as a use of >70% of the nights and >4 h/night...
March 30, 2017: Sleep Medicine
https://www.readbyqxmd.com/read/28427784/prehospital-removal-improves-neurological-outcomes-in-elderly-patient-with-foreign-body-airway-obstruction
#5
Yutaka Igarashi, Shoji Yokobori, Yudai Yoshino, Tomohiko Masuno, Masato Miyauchi, Hiroyuki Yokota
OBJECTIVE: In Japan, the number of patients with foreign body airway obstruction by food is rapidly increasing with the increase in the population of the elderly and a leading cause of unexpected death. This study aimed to determine the factors that influence prognosis of these patients. METHODS: This is a retrospective single institutional study. A total of 155 patients were included. We collected the variables from the medical records and analyzed them to determine the factors associated with patient outcome...
April 10, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28427039/low-dose-growth-hormone-treatment-in-infants-and-toddlers-with-prader-willi-syndrome-is-comparable-to-higher-dosage-regimens
#6
Elly Scheermeyer, Mark Harris, Ian Hughes, Patricia A Crock, Geoffrey Ambler, Charles F Verge, Phil Bergman, George Werther, Maria E Craig, Catherine S Choong, Peter S W Davies
OBJECTIVE: Evaluate benefit and risk of low dose growth hormone treatment (GHT, 4.5mg/m(2)/week) in very young children with Prader-Willi Syndrome (PWS). DESIGN: Prospective longitudinal clinical intervention. METHODS: We evaluated 31 infants (aged 2-12months) and 42 toddlers (13-24months) from the PWS-OZGROW database for height, weight and BMI using the World Health Organization standard deviation scores (SDSWHO) and PWS specific BMI (SDSPWS), bone age, insulin-like growth factor 1 (IGF-I) levels and adverse events over 3years of GHT...
March 24, 2017: Growth Hormone & IGF Research
https://www.readbyqxmd.com/read/28426526/effect-of-ambient-ozone-exposure-assessed-by-individual-monitors-on-nasal-function-and-exhaled-no-among-school-children-in-the-area-of-thessaloniki-greece
#7
Nikolaos Angelis, Dionisios Spyratos, Kalliopi Domvri, Konstantina Dimakopoulou, Evangelia Samoli, Georgios Kalamaras, Anna Karakatsani, Georgios Grivas, Klea Katsouyanni, Despina Papakosta
OBJECTIVES: The study of short-term effects of environmental ozone exposure on nasal airflow, lung function, and airway inflammation METHODS:: Ninety one children-47 underwent rhinomanometry-were included. The study was carried out during the 2013 to 2014 academic year. Activity questionnaires and personal O3 samplers were distributed and 1 week later, respiratory measurements were performed. Daily measurements of outdoor ozone were also considered. RESULTS: A 10 μg/m increase in weekly personal ozone exposure concentrations was associated with a non-statistically significant 12...
April 19, 2017: Journal of Occupational and Environmental Medicine
https://www.readbyqxmd.com/read/28425504/suv39h1-reduction-is-implicated-in-abnormal-inflammation-in-copd
#8
Tzu-Tao Chen, Sheng-Ming Wu, Shu-Chuan Ho, Hsiao-Chi Chuang, Chien-Ying Liu, Yao-Fei Chan, Lu-Wei Kuo, Po-Hao Feng, Wen-Te Liu, Kuan-Yuan Chen, Ta-Chih Hsiao, Jer-Nan Juang, Kang-Yun Lee
Chronic obstructive pulmonary disease(COPD) is characterized by enhanced chronic inflammation in the airways, lung parenchyma, and circulation. We investigated whether SUV39H1, a histone methyltransferase, is causatively implicated in the abnormal inflammation observed in COPD. The SUV39H1 and H3K9me3 levels were reduced in peripheral blood mononuclear cells(PBMCs), primary human small airway epithelial cells(HSAEpCs) and lung tissues from COPD patients, which were correlated with poor lung function and the serum IL-8 and IL-6 levels...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28424763/airway-problems-in-neonates-a-review-of-the-current-investigation-and-management-strategies
#9
REVIEW
Quen Mok
Airway problems in the neonatal population are often life threatening and raise challenging issues in diagnosis and management. The airway problems can result from congenital or acquired lesions and can be broadly classified into those causing obstruction or those due to an abnormal "communication" in the airway. Many different investigations are now available to identify the diagnosis and quantify the severity of the problem, and these tests can be simple or invasive. Bronchography and bronchoscopy are essential to determine the extent and severity of the airway problem and to plan treatment strategy...
2017: Frontiers in Pediatrics
https://www.readbyqxmd.com/read/28424459/development-and-outcomes-of-a-primary-care-based-sleep-assessment-service-in-canterbury-new-zealand
#10
Michael J Epton, Paul T Kelly, Brett I Shand, Sallyanne V Powell, Judith N Jones, Graham R B McGeoch, Michael C Hlavac
Prior to 2007, increasing demand for sleep services, plus inability to adequately triage severity, led to long delays in sleep assessment and accessing continuous positive airway pressure. We established a community sleep assessment service carried out by trained general practices using a standardised tool and overnight oximetry. All cases were discussed at a multi-disciplinary meeting, with four outcomes: severe obstructive sleep apnoea treated with continuous positive airway pressure; investigation with more complex studies; sleep physician appointment; no or non-severe sleep disorder for general practitioner management...
April 19, 2017: NPJ Primary Care Respiratory Medicine
https://www.readbyqxmd.com/read/28421197/ginsenoside-rg1-ameliorates-cigarette-smoke-induced-airway-fibrosis-by-suppressing-the-tgf-%C3%AE-1-smad-pathway-in-vivo-and-in-vitro
#11
Sibin Guan, Qian Liu, Fengfeng Han, Wen Gu, Lin Song, Yue Zhang, Xuejun Guo, Weiguo Xu
Small airway fibrosis is a key pathological process accompanying chronic obstructive pulmonary disease (COPD) and includes fibroblast/myofibroblast transdifferentiation and excessive extracellular matrix deposition. Ginsenoside Rg1, one of the main active ingredients of Panax ginseng, has been shown to exert an antifibrotic effect in many tissues. However, little is known about the underlying mechanism and whether ginsenoside Rg1 can exert an effect on small airway fibrosis. We investigated the anti-small airway fibrosis effects of ginsenoside Rg1 in human embryonic lung fibroblasts and in COPD rats...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28420758/the-foxm1-inhibitor-rcm-1-suppresses-goblet-cell-metaplasia-and-prevents-il-13-and-stat6-signaling-in-allergen-exposed-mice
#12
Lifeng Sun, Xiaomeng Ren, I-Ching Wang, Arun Pradhan, Yufang Zhang, Hannah M Flood, Bo Han, Jeffrey A Whitsett, Tanya V Kalin, Vladimir V Kalinichenko
Goblet cell metaplasia and excessive mucus secretion associated with asthma, cystic fibrosis, and chronic obstructive pulmonary disease contribute to morbidity and mortality worldwide. We performed a high-throughput screen to identify small molecules targeting a transcriptional network critical for the differentiation of goblet cells in response to allergens. We identified RCM-1, a nontoxic small molecule that inhibited goblet cell metaplasia and excessive mucus production in mice after exposure to allergens...
April 18, 2017: Science Signaling
https://www.readbyqxmd.com/read/28419387/effect-of-continuous-positive-airway-pressure-treatment-on-health-related-quality-of-life-and-sleepiness-in-high-cardiovascular-risk-individuals-with-sleep-apnea-best-apnea-interventions-for-research-bestair-trial
#13
Ying Y Zhao, Rui Wang, Kevin J Gleason, Eldrin F Lewis, Stuart F Quan, Claudia M Toth, Michael Morrical, Michael Rueschman, Jia Weng, James H Ware, Murray A Mittleman, Susan Redline
Study Objectives: The long term effect of continuous positive airway pressure (CPAP) on health-related quality of life (HRQOL) in patients with high cardiovascular disease risk and obstructive sleep apnea (OSA) without severe sleepiness is uncertain. We aimed to determine the effect of CPAP treatment on HRQOL in individuals with moderate or severe OSA and cardiovascular disease (CVD) or multiple CVD risk factors without severe sleepiness. Methods: In this randomized, controlled, parallel group study, 169 participants were assigned to treatment with CPAP or the control group (conservative medical therapy [CMT] or CMT with sham CPAP)...
April 17, 2017: Sleep
https://www.readbyqxmd.com/read/28419356/arousal-induced-hypocapnia-does-not-reduce-genioglossus-activity-in-obstructive-sleep-apnea-arousal-induced-hypocapnia-in-osa-muscle-effects
#14
Jennifer M Cori, Therese Thornton, Fergal J O'Donoghue, Peter D Rochford, David P White, John Trinder, Amy S Jordan
Study Objectives: To determine whether arousals that terminate obstructive events in obstructive sleep apnea (OSA): 1. Induce hypocapnia and 2. Subsequently reduce genioglossus muscle activity following the return to sleep. Methods: 31 untreated OSA patients slept instrumented with: sleep staging electrodes, nasal mask and pneumotachograph, end-tidal CO2 monitoring and intramuscular genioglossus electrodes. End-tidal CO2 was monitored and respiratory arousals were assigned an end-arousal CO2 change value (PETCO2 on the last arousal breath minus each individual's wakefulness PETCO2)...
April 13, 2017: Sleep
https://www.readbyqxmd.com/read/28419320/therapeutic-cpap-level-predicts-upper-airway-collapsibility-in-patients-with-obstructive-sleep-apnea-therapeutic-cpap-predicts-upper-airway-collapsibility
#15
Shane A Landry, Simon A Joosten, Danny J Eckert, Amy S Jordan, Scott A Sands, David P White, Atul Malhotra, Andrew Wellman, Garun S Hamilton, Bradley A Edwards
Study Objectives: Upper airway collapsibility is a key determinant of obstructive sleep apnea (OSA) which can influence the efficacy of certain non-CPAP treatment for OSA. However, there is no simple way to measure this variable clinically. The present study aimed to develop a clinically implementable tool to evaluate the collapsibility of a patient's upper airway. Methods: Collapsibility, as characterized by the passive pharyngeal critical closing pressure (Pcrit), was measured in 46 patients with OSA...
April 13, 2017: Sleep
https://www.readbyqxmd.com/read/28418779/determining-a-successful-nasal-airway-surgery-calculation-of-the-patient-centered-minimum-important-difference
#16
Hedyeh Ziai, James P Bonaparte
Objective Determine whether the patient-identified minimum important difference (MID) in Nasal Obstruction Symptom Evaluation (NOSE) score differs from a statistically calculated estimate of MID in patients with septal deviation undergoing nasal airway surgery. Study Design Prospective cohort. Setting Tertiary academic referral center. Subjects Patients with nasal obstruction due to septal deviation. Methods Patients completed the NOSE questionnaire preoperatively and indicated the change from their baseline score that they would consider the minimum improvement required to define the septoplasty with turbinate reduction as successful...
April 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28418337/a-simple-measure-to-assess-hyperinflation-and-air-trapping-1-forced-expiratory-volume-in-three-second-forced-vital-capacity
#17
Sermin Börekçi, Tunçalp Demir, Aslı Görek Dilektaşlı, Melahat Uygun, Nurhayat Yıldırım
BACKGROUND: Several recent studies have suggested that 1 minus-forced expiratory volume expired in 3 seconds / forced vital capacity (1-FEV3/FVC) may be an indicator of distal airway obstruction and a promising measure to evaluate small airways dysfunction. AIMS: To investigate the associations of 1-FEV3/FVC with the spirometric measures and lung volumes that assess small airways dysfunction and reflects hyperinflation and air trapping. STUDY DESIGN: Retrospective cross-sectional study...
April 5, 2017: Balkan Medical Journal
https://www.readbyqxmd.com/read/28417683/tracheostomy-for-severe-pediatric-obstructive-sleep-apnea-indications-and-outcomes
#18
Christopher J Rizzi, Julian D Amin, Amal Isaiah, Tulio A Valdez, Anita Jeyakumar, Suzanne E Smart, Kevin D Pereira
Objectives (1) To describe characteristics of pediatric patients undergoing tracheostomy for obstructive sleep apnea (OSA). (2) To highlight perioperative events and outcomes of the procedure. Study Design Case series with chart review. Setting Four tertiary care academic children's hospitals. Subjects and Methods Twenty-nine children aged <18 years from January 1, 2010, to December 31, 2015, who underwent tracheostomy for severe OSA, defined as an apnea-hypopnea index (AHI) >10, were included in the study...
April 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/28416951/spirometry-and-bronchodilator-test
#19
REVIEW
Yun Su Sim, Ji-Hyun Lee, Won-Yeon Lee, Dong In Suh, Yeon-Mok Oh, Jong-Seo Yoon, Jin Hwa Lee, Jae Hwa Cho, Cheol Seok Kwon, Jung Hyun Chang
Spirometry is a physiological test for assessing the functional aspect of the lungs using an objective indicator to measure the maximum amount of air that a patient can inhale and exhale. Acceptable spirometry testing needs to be conducted three times by an acceptable and reproducible method for determining forced vital capacity (FVC). Until the results of three tests meet the criteria of reproducibility, the test should be repeated up to eight times. Interpretation of spirometry should be clear, concise, and informative...
April 2017: Tuberculosis and Respiratory Diseases
https://www.readbyqxmd.com/read/28416135/all-the-rage-in-lung-disease-the-receptor-for-advanced-glycation-endproducts-rage-is-a-major-mediator-of-pulmonary-inflammatory-responses
#20
REVIEW
Elizabeth A Oczypok, Timothy N Perkins, Tim D Oury
The receptor for advanced glycation endproducts (RAGE) is a pro-inflammatory pattern recognition receptor (PRR) that has been implicated in the pathogenesis of numerous inflammatory diseases. It was discovered in 1992 on endothelial cells and was named for its ability to bind advanced glycation endproducts and promote vascular inflammation in the vessels of patients with diabetes. Further studies revealed that RAGE is most highly expressed in lung tissue and spurred numerous explorations into RAGE's role in the lung...
March 18, 2017: Paediatric Respiratory Reviews
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