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Excessive dynamic airway collapse

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https://read.qxmd.com/read/30743277/-excessive-dynamic-airway-collapse
#1
Regine Mariette Perl, Volker Steger, Jürgen Hetzel, Marius Horger
No abstract text is available yet for this article.
February 11, 2019: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://read.qxmd.com/read/30665510/tracheal-collapsibility-in-adults-is-dynamic-over-time
#2
Mette Nygaard, Ole Hilberg, Finn Rasmussen, Elisabeth Bendstrup
BACKGROUND: Tracheal collapse is a weakness of the tracheal wall leading to expiratory central airway collapse of more than 50% compared to inspiration. It has previously been discussed whether the collapsibility of the greater airways is a stable or a dynamic condition. Indeed, other well-known lung diseases such as asthma are characterized by dynamic changes with respect to pulmonary function indices. There are several different morphologies of the trachea related to collapsibility such as the crescent type and the saber-sheath type both involving the tracheal cartilage and excess dynamic airway collapse only involving the posterior membranous part of the trachea...
January 2019: Respiratory Medicine
https://read.qxmd.com/read/30641584/tracheobronchomalacia-and-excessive-dynamic-airway-collapse-medical-and-surgical-treatment
#3
Fayez Kheir, Adnan Majid
Excessive central airway collapse (ECAC) is characterized by excessive narrowing of the airway lumen during exhalation leading to dyspnea, cough, mucostasis, recurrent respiratory infections, and poor quality of life. Tracheobronchomalacia and excessive dynamic airway collapse are heterogeneous entities of ECAC and are characterized by a diverse nonspecific symptom profile. Although the pathophysiology of airway mechanics as well as morphology in both entities is different, current evidence so far shows no practical benefit in making such distinction since both have similar symptoms and the diagnostic and therapeutic work-ups are the same...
December 2018: Seminars in Respiratory and Critical Care Medicine
https://read.qxmd.com/read/30279064/expiratory-central-airway-collapse-in-adults-anesthetic-implications-part-1
#4
REVIEW
Ricardo Diaz Milian, Edward Foley, Maria Bauer, Andrea Martinez-Velez, Manuel R Castresana
Expiratory central airway collapse (ECAC) is a general term that incorporates tracheobronchomalacia (TBM) and excessive dynamic airway collapse (EDAC). TBM and EDAC are progressive, degenerative disorders of the tracheobronchial tree, causing airway collapse. Induction of general anesthesia can trigger intraoperative airway collapse in patients with these conditions. This crisis presents as the sudden inability to ventilate, which can lead to life-threatening hypoxemia and hypercapnia. This article reviews the definition, pathophysiology, diagnosis, and anesthetic implications of ECAC...
August 31, 2018: Journal of Cardiothoracic and Vascular Anesthesia
https://read.qxmd.com/read/30054115/excessive-dynamic-airway-collapse-or-tracheobronchomalacia-does-it-matter
#5
Fayez Kheir, Sebastian Fernandez-Bussy, Sidhu P Gangadharan, Adnan Majid
No abstract text is available yet for this article.
July 24, 2018: Archivos de Bronconeumología
https://read.qxmd.com/read/29916844/positive-airway-pressure-devices-for-the-management-of-breathlessness
#6
Rebecca F D'Cruz, Georgios Kaltsakas, Eui-Sik Suh, Patrick B Murphy, Nicholas Hart
PURPOSE OF REVIEW: Breathlessness is a common symptom in many chronic diseases and may be refractory to pharmacotherapy. In this review, we discuss the pathophysiology of breathlessness and the role of positive airway pressure (PAP) devices to ameliorate it. RECENT FINDINGS: Breathlessness is directly related to neural respiratory drive, which can be modified by addressing the imbalance between respiratory muscle load and capacity. Noninvasive PAP devices have been applied to patients limited by exertional breathless and, as the disease progresses, breathlessness at rest...
September 2018: Current Opinion in Supportive and Palliative Care
https://read.qxmd.com/read/29622320/laryngomalacia-tracheomalacia-and-bronchomalacia
#7
Erik B Hysinger
Airway malacia can occur in the larynx (larygomalacia), trachea (tracheomalacia), or bronchi (bronchomalacia). As a group these are the most common congenital abnormalities of the pediatric airway and are characterized by increased airway compliance, resulting in excessive dynamic collapse during the respiratory cycle. While a diagnosis can be suspected based on clinical history and physical examination, definitive evaluation is based of nasopharyngolaryngoscopy and/or bronchoscopy. Observation and conservative management are typically all that are required...
April 2018: Current Problems in Pediatric and Adolescent Health Care
https://read.qxmd.com/read/29433717/tracheobronchomalacia-and-excessive-dynamic-airway-collapse
#8
REVIEW
Kendra Hammond, Uzair K Ghori, Ali I Musani
Tracheobronchomalacia (TBM) and excessive dynamic airway collapse (EDAC) are more frequently being recognized as the etiology of multiple types of respiratory complaints from chronic cough to exertional syncope to recurrent infections. Identification of these conditions requires a high suspicion, as well as a thorough history and physical examination. Dynamic computed tomography imaging and bronchoscopic evaluation are integral in achieving an accurate diagnosis. Once recognized, treatment ranges from addressing underlying contributing conditions to surgical stabilization of the airway...
March 2018: Clinics in Chest Medicine
https://read.qxmd.com/read/29101894/computational-fluid-dynamics-evaluation-of-excessive-dynamic-airway-collapse
#9
Shahab Taherian, Hamid Rahai, Bernardo Gomez, Thomas Waddington, Farhad Mazdisnian
BACKGROUND: Excessive dynamic airway collapse, which is often caused by the collapse of the posterior membrane wall during exhalation, is often misdiagnosed with other diseases; stents can provide support for the collapsing airways. The standard pulmonary function tests do not necessarily show change in functional breathing condition for evaluation of these type of diseases. METHODS: Flow characteristics through a patient's airways with excessive dynamic airway collapse have been numerically investigated...
December 2017: Clinical Biomechanics
https://read.qxmd.com/read/28947026/manometry-optimized-positive-expiratory-pressure-mopep-in-excessive-dynamic-airway-collapse-edac
#10
Muhammad A Zafar, Aaron M Mulhall, William Eschenbacher, Ajay Kaul, Sadia Benzaquen, Ralph J Panos
BACKGROUND: Positive expiratory pressure(PEP) breathing modalities are commonly prescribed in obstructive lung diseases, however practical methods of airway pressures(AP) quantification for therapeutic efficacy are lacking. Excessive dynamic airway collapse(EDAC) is characterized by expiratory central airway collapse leading to dyspnea and poor quality of life(QoL), with limited therapeutic options. PURPOSE: To measure AP and exertional dyspnea in EDAC patients during normal breathing and with use of pursed-lip breathing(PLB), nasal PEP device(nPEP), and oral-PEP valve(oPEP) during rest and exercise using an Esophageal Manometer...
October 2017: Respiratory Medicine
https://read.qxmd.com/read/28841915/expiratory-central-airway-collapse-in-stable-copd-and-during-exacerbations
#11
Paul Leong, Anne Tran, Jhanavi Rangaswamy, Laurence E Ruane, Michael W Fernando, Martin I MacDonald, Kenneth K Lau, Philip G Bardin
BACKGROUND: Tracheal obstruction resulting from expiratory tracheal deformation has been associated with respiratory symptoms and severe airway exacerbations. In chronic obstructive pulmonary disease (COPD), acute exacerbations (AECOPD) create large intrathoracic pressure swings which may increase tracheal deformation. Excessive central airway collapse (ECAC) may be diagnosed when the tracheal area on expiration is less than 50% of that on inspiration. The prevalence of ECAC in AECOPD and its temporal course have not been systematically studied...
August 25, 2017: Respiratory Research
https://read.qxmd.com/read/28592032/-tracheobronchomalacia-and-excessive-dynamic-airway-collapse
#12
J W Wang, S H Jiang
No abstract text is available yet for this article.
June 12, 2017: Chinese Journal of Tuberculosis and Respiratory Diseases
https://read.qxmd.com/read/28360484/author-s-reply-to-concern-on-excessive-dynamic-airway-collapse-and-wheeze
#13
Girish Sindhwani, Rakhee Sodhi
No abstract text is available yet for this article.
March 2017: Lung India: Official Organ of Indian Chest Society
https://read.qxmd.com/read/28146390/excessive-dynamic-airway-collapse-fact-fiction-or-flow-limitation
#14
Gerald C Smaldone
No abstract text is available yet for this article.
February 2017: Annals of the American Thoracic Society
https://read.qxmd.com/read/28146375/reply-excessive-dynamic-airway-collapse-fact-fiction-or-flow-limitation
#15
Michael J Morris, Septimiu Murgu
No abstract text is available yet for this article.
February 2017: Annals of the American Thoracic Society
https://read.qxmd.com/read/28074723/-a-woman-with-excessive-dynamic-airway-collapse
#16
R L T N Salden, S Postma
BACKGROUND: 'Excessive dynamic airway collapse' (EDAC) is a form of tracheamalacia, that does not affect the rings of cartilage on the anterior side of the trachea, but in which the posterior wall of the trachea collapses during inspiration and expiration. CASE DESCRIPTION: An 80 year-old woman presented to the accident and emergency department with dyspnoea and severe inspiratory and expiratory stridor, with sudden onset a few hours previously. Following a series of investigations, she was shown to have a narrowing of the trachea, radiating from the posterior wall...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://read.qxmd.com/read/28005835/our-experience-on-silicone-y-stent-for-severe-copd-complicated-with-expiratory-central-airway-collapse
#17
Mehmet A Ozgul, Erdogan Cetinkaya, Mustafa Cortuk, Sinem Iliaz, Elif Tanriverdi, Sule Gul, Guler Ozgul, Hilal Onaran, Kenan Abbasli, Huseyin E Dincer
BACKGROUND: Expiratory central airway collapse (ECAC) is abnormal central airway narrowing during expiration. ECAC involves 2 different pathophysiological entities as tracheobronchomalacia and excessive dynamic airway collapse (EDAC). Although the exact cause is unknown, chronic obstructive pulmonary disease (COPD) is frequently accompanied by ECAC. Although there are various publications on the relationship between COPD and ECAC, there are very few data for stent placement in patients with tracheobronchomalacia accompanied severe COPD...
April 2017: Journal of Bronchology & Interventional Pulmonology
https://read.qxmd.com/read/27891011/excessive-dynamic-airway-collapse-and-wheeze-reasons-for-contemplation
#18
Animesh Ray
No abstract text is available yet for this article.
November 2016: Lung India: Official Organ of Indian Chest Society
https://read.qxmd.com/read/27764007/teflon-injection-into-the-trachea-causes-predictable-fibroblastic-response-and-collagen-deposition-a-pilot-study
#19
Javier A Longoria, Miwa Fujiwara, Catalina Guerra, Jeffrey L Lee, Catherine S H Sassoon, Farhad Mazdisnian
BACKGROUND: Expiratory central airway collapse is an increasingly recognized abnormality of the central airways and may be present in as many as 22% of patients evaluated for chronic obstructive pulmonary disease and/or asthma. Many current treatment options require invasive procedures that have been shown to cause significant morbidity and mortality. To test the hypothesis that Teflon injection will induce sufficient fibroblast proliferation and collagen deposition, we evaluated the time course on the effect of Teflon injection in the posterior membranous trachea on the histopathology of the tracheobronchial tree...
October 2016: Journal of Bronchology & Interventional Pulmonology
https://read.qxmd.com/read/27627468/excessive-dynamic-airway-collapse-a-standalone-cause-of-exertional-dyspnea
#20
EDITORIAL
Septimiu Murgu, Sean Stoy
No abstract text is available yet for this article.
September 2016: Annals of the American Thoracic Society
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