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https://www.readbyqxmd.com/read/28434015/low-lymphatic-vessel-density-associates-with-chronic-rhinosinusitis-with-nasal-polyps
#1
A Luukkainen, M Seppälä, J Renkonen, R Renkonen, J Hagström, H Huhtala, M Rautiainen, J Myller, T Paavonen, A Ranta, T Torkkeli, S Toppila-Salmi
OBJECTIVES: Chronic rhinosinusitis with and without nasal polyps (CRSwNP and CRSsNP) and antrochoanal polyps (ACP) are different upper airway inflammation phenotypes with different pathomechanisms. In order to understand the development of tissue edema, the present study aimed to evaluate lymphatic vessel density in CRSsNP, CRSwNP and ACP. MATERIALS AND METHODS: 120 retrospective nasal and maxillary sinus specimens were stained immunohistochemically with a von Willebrand factor polyclonal antibody recognizing vascular and lymphatic endothelium, and with a podoplanin monoclonal antibody recognizing lymphatic endothelium...
April 23, 2017: Rhinology
https://www.readbyqxmd.com/read/28433709/pulmonary-pathobiology-induced-by-zinc-oxide-nanoparticles-in-mice-a-24-hour-and-28-day-follow-up-study
#2
Hsiao-Chi Chuang, Kai-Jen Chuang, Jen-Kun Chen, His-En Hua, Yen-Ling Shen, Wei-Neng Liao, Chii-Hong Lee, Chih-Hong Pan, Kuan-Yuan Chen, Kang-Yun Lee, Ta-Chih Hsiao, Tsun-Jen Cheng
Inhaled zinc oxide nanoparticles (ZnONPs) have high deposition rates in the alveolar region of the lungs; however, the adverse health effects of ZnONPs on the respiratory system are unclear. Herein, pathobiological responses of the respiratory system of mice that received intratracheal administration of ZnONPs were investigated by a combination of molecular and imaging (SPECT and CT) approaches. Also, normal BEAS-2B and adenocarcinoma A549 cells were used to confirm the results in mice. First, female BALB/c mice were administrated a series of doses of 20-nm ZnONPs and were compared to the phosphate-buffered saline control for 24-h and 28-day follow-up observations...
April 19, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28427552/integrating-the-microbiota-of-the-respiratory-tract-with-the-unified-airway-model
#3
REVIEW
Alissa S Hanshew, Marie E Jetté, Sarah P Rosen, Susan L Thibeault
The unified airway model has developed from indications that the upper and lower respiratory tracts share key elements of pathogenesis. These shared traits likely extend to similar niche characteristics that support bacterial communities, and as such, we suspect that similar microbes exist on upper and lower respiratory tract epithelium. Over the past decade and a half there have been significant improvements in microbiological identification and analysis due to the development of new molecular technologies, including next-generation sequencing...
May 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28427542/recurrent-respiratory-papillomatosis-a-state-of-the-art-review
#4
REVIEW
Helena Ribeiro Fortes, Felipe Mussi von Ranke, Dante Luiz Escuissato, Cesar Augusto Araujo Neto, Gláucia Zanetti, Bruno Hochhegger, Carolina Althoff Souza, Edson Marchiori
Recurrent respiratory papillomatosis (RRP) is a benign disease of the upper aero-digestive tract caused by human papillomavirus (HPV) infection, which affects children and young adults. The aim of this review is to describe the main etiological, epidemiological, clinical, diagnostic, and treatment aspects of RRP. Most infections in children occur at birth, during passage through the birth canals of contaminated mothers. In adults, HPV is transmitted sexually. Papillomas usually appear as exophytic nodules, primarily in the larynx, but occasionally involving the nasopharynx, tracheobronchial tree, and pulmonary parenchyma...
May 2017: Respiratory Medicine
https://www.readbyqxmd.com/read/28427314/capturing-complexity-in-pulmonary-system-modelling
#5
Alys R Clark, Haribalan Kumar, Kelly Burrowes
Respiratory disease is a significant problem worldwide, and it is a problem with increasing prevalence. Pathology in the upper airways and lung is very difficult to diagnose and treat, as response to disease is often heterogeneous across patients. Computational models have long been used to help understand respiratory function, and these models have evolved alongside increases in the resolution of medical imaging and increased capability of functional imaging, advances in biological knowledge, mathematical techniques and computational power...
May 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28424225/quantitative-assessment-of-airway-pathology-in-subjects-with-copd-using-low-dose-high-resolution-computed-tomography
#6
Huai Chen, Gai-Qun Chen, Qing-Si Zeng, Ting-Ting Xia, Jia-Xuan Zhou, Shi-Jun Qiu
BACKGROUND: The purpose of this study was to correlate airway parameters of COPD determined by low-dose high-resolution computed tomography (HRCT) with pulmonary function testing (PFT) results. METHODS: PFT data were collected for subjects with COPD and healthy controls. All subjects received inspiratory and expiratory phase low-dose HRCT. Bronchi in the apical segment of the right upper lobe (RB1), posterior segment of the right lower lobe (RB6), and lower lingual segment of the left upper lobe (LB5) were the target bronchi...
April 19, 2017: Respiratory Care
https://www.readbyqxmd.com/read/28421631/subclinical-lower-airways-correlates-of-chronic-allergic-and-non-allergic-rhinitis
#7
Ricardo J Saranz, Alejandro Lozano, Natalia A Lozano, Marina F Ponzio, Álvaro A Cruz
The upper and lower airways behave as a physiological and pathophysiological unit. Subclinical lower airways abnormalities have been described in patients with rhinitis without asthma. These are expressed as bronchial hyperreactivity, abnormalities in lung function and bronchial inflammation, likely as a result of the same phenomenon with systemic inflammatory impact that reaches both the nose and the lungs, which for unknown reasons does not always have a full clinical expression. Patients with rhinitis are at increased risk of developing asthma; therefore most authors suggest a careful clinical evaluation and monitoring of these patients, especially if symptoms related to inflammation in the lower airways are observed...
April 19, 2017: Clinical and Experimental Allergy: Journal of the British Society for Allergy and Clinical Immunology
https://www.readbyqxmd.com/read/28419805/hypoglossal-nerve-upper-airway-stimulator-implantation-after-radiotherapy-for-head-and-neck-malignancy
#8
Zhong Zheng, Shirley Hu, Boris Chernobilsky
No abstract text is available yet for this article.
April 1, 2017: Otolaryngology—Head and Neck Surgery
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
#9
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
#10
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/28418700/three-dimensional-analysis-of-upper-airway-morphology-in-skeletal-class-iii-patients-with-and-without-mandibular-asymmetry
#11
Xi Wen, Xiyu Wang, Shuqi Qin, Lorenzo Franchi, Yan Gu
OBJECTIVE: To compare the three-dimensional (3D) morphology of the upper airway in skeletal Class III patients with and without mandibular asymmetry and to investigate the possible underlying correlations between the morphology of the upper airway and mandibular deviation. MATERIALS AND METHODS: Cone-beam computed tomography images of 54 subjects with skeletal Class III malocclusion (ANB angle ≤ 0.4°, Wits ≤ -5.5°) were taken and 3D upper airway models were reconstructed using Dolphin 3D software...
April 18, 2017: Angle Orthodontist
https://www.readbyqxmd.com/read/28418345/cricotracheal-resection-in-a-patient-with-severe-subglottic-stenosis-advantages-of-a-temporary-non-cannulated-tracheostomy
#12
Todor Miroslavov Popov, Tzvetomir Marinov, Julian Rangachev, Dimitar Konov, Maya Belitova
BACKGROUND: Stenosis in the area of the cricotracheal segment is still a challenging problem to be dealt with. Post-intubational cases mark an increase in recent years due to the advances in intensive care, thoracic surgery and neurosurgery departments. CASE REPORT: This paper describes a case report of a patient with severe subglottic stenosis (grade III according to the Cotton-Myer scale), introduces a new option in cricotracheal resections - postoperative temporary non-cannulated tracheostomy and describes its advantages...
April 5, 2017: Balkan Medical Journal
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
#13
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
#14
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/28416071/-acute-upper-airway-obstruction-caused-by-a-multinodular-goitre-after-tracheotomy
#15
Chadi Nimeh Abdel-Halim, Bibi Lange
This case report illustrates how a multinodular goitre caused acute airway obstruction in a multitrauma 66-year-old male after tracheotomy. The patient had no symptoms of the goitre before the tracheotomy but developed subglottic airway obstruction at the time of decannulation. He underwent a subacute total thyroidectomy which removed the obstructive symptoms. A weakening of the tracheal tube followed by the tracheotomy possibly caused the tracheal stenosis in combination with the goitre.
April 3, 2017: Ugeskrift for Laeger
https://www.readbyqxmd.com/read/28412180/computational-fluid-dynamics-study-of-the-pharyngeal-airway-space-before-and-after-mandibular-setback-surgery-in-patients-with-mandibular-prognathism
#16
Y Yajima, M Oshima, T Iwai, H Kitajima, S Omura, I Tohnai
The purpose of this study was to investigate the relationship between the pressure drop in the pharyngeal airway space (ΔPPAS) and the minimum cross-sectional area (minCSA) of the pharyngeal airway before and after mandibular setback surgery using computational fluid dynamics, in order to prevent iatrogenic obstructive sleep apnoea. Eleven patients with mandibular prognathism underwent bilateral sagittal split osteotomy for mandibular setback. Three-dimensional models of the upper airway were reconstructed from preoperative and postoperative computed tomography images, and simulations were performed using computational fluid dynamics...
April 12, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28412031/alterations-in-hyolaryngeal-elevation-after-esophageal-anastomosis-a-possible-mechanism-for-airway-aspiration
#17
Numan Demir, Selen Serel Arslan, Sule Yalcin, Ayşe Karaduman, Feridun Cahit Tanyel, Tutku Soyer
AIM: A prospective study was performed to evaluate anatomical alterations and hyolaryngeal elevation (HE) by videofluoroscopic swallowing study (VFSS) in patients with esophageal atresia-tracheoesophageal fistula (EA-TEF). METHODS: Patients operated for EA-TEF were evaluated for age, sex, type of atresia and time to esophageal anastomosis. All patients were evaluated by videofluoroscopic swallowing study (VFSS). Penetration-Aspiration scale (PAS≥7 is considered as aspiration), distance between upper esophageal sphincter and 2nd cervical vertebrae (UES-C2) and hyolaryngeal elevation (HE) were evaluated by the same deglutitionist who was blind to the study...
April 5, 2017: Journal of Pediatric Surgery
https://www.readbyqxmd.com/read/28410251/association-of-need-for-tracheotomy-with-decreasing-mechanical-in-exsufflation-flows-in-amyotrophic-lateral-sclerosis
#18
John R Bach, Neelam Upadhyaya
Although patients with lower motor neuron and myopathic disorders can prolong their lives by depending on continuous noninvasive ventilatory support, most patients with amyotrophic lateral sclerosis (ALS) cannot and must use tracheostomy mechanical ventilation to prolong survival. This case demonstrates that this occurs because amyotrophic lateral sclerosis patients' upper motor neuron reflex laryngeal closure and stridor cause upper airway collapse that renders mechanical insufflation-exsufflation (MIE) ineffective in expulsing airway secretions as well as for permitting continuous noninvasive ventilatory support...
April 13, 2017: American Journal of Physical Medicine & Rehabilitation
https://www.readbyqxmd.com/read/28409851/response-to-a-combination-of-oxygen-and-a-hypnotic-as-treatment-for-obstructive-sleep-apnoea-is-predicted-by-a-patient-s-therapeutic-cpap-requirement
#19
Shane A Landry, Simon A Joosten, Scott A Sands, David P White, Atul Malhotra, Andrew Wellman, Garun S Hamilton, Bradley A Edwards
BACKGROUND AND OBJECTIVE: Upper airway collapsibility predicts the response to several non-continuous positive airway pressure (CPAP) interventions for obstructive sleep apnoea (OSA). Measures of upper airway collapsibility cannot be easily performed in a clinical context; however, a patient's therapeutic CPAP requirement may serve as a surrogate measure of collapsibility. The present work aimed to compare the predictive use of CPAP level with detailed physiological measures of collapsibility...
April 13, 2017: Respirology: Official Journal of the Asian Pacific Society of Respirology
https://www.readbyqxmd.com/read/28405893/airway-and-blood-inflammatory-markers-in-waste-collectors
#20
M Raulf, V van Kampen, H D Neumann, V Liebers, A Deckert, T Brüning, J Bünger, F Hoffmeyer
Waste collectors are exposed to a heterogeneous mixture of bioaerosols able to induce health effects. The study aim was to evaluate inflammatory processes in blood and in the respiratory tract via analysis of atopy and club cell secretory protein 16 (CC16) in serum, exhaled nitric oxide (FeNO), and cellular and soluble mediators in nasal lavage fluid (NALF) and induced sputum (IS). Sixty nine current waste collectors (48% smokers) and 28 former waste collectors (25% smokers) were included in the cross-sectional study...
April 13, 2017: Advances in Experimental Medicine and Biology
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