Dynamic tracheal collapse

Changed by Yuranga Weerakkody, 19 Feb 2016

Back to revision history

Updates to Synonym Attributes

Updates to Primarylink Attributes

Updates to Article Attributes

Body was changed:

Show markup changes

Dynamic tracheal collapse refers to collapse of the trachea during expiration. It is perhaps best assessed on CT in the end expiratory phase. An inspiratory series is also useful for comparative purposes. The term excessive dynamic airway collapse (EDAC) refers to abnormal and exaggerated bulging of the posterior wall within the airway lumen during exhalation and is often termed pathological if the reduced airway lumen is <50% of the normal during this phase⁴.

Clinical presentation

It may cause a variety of symptoms such as dyspnoea, wheeze, and exercise intolerance³.

Pathology

The posterior cartilage free tracheal membrane bulges forwards excessively during expiration.

It can be observed in the number of conditions

tracheomalacia
Mounier-Kuhn syndrome: there is background tracheal dilatation
relapsing polychondritis: there is background tracheal cartilage thickening
chronic obstructive pulmonary disease (COPD): can be observed in a subset of COPD patients ^1,8.

Treatment and prognosis

The prognosis depends of the severity of the condition. Varied management strategies have been proposed with some authors suggested tracheoplasty for selected cases ⁷.

~~-<li><a title="Tracheomalacia" href="/articles/tracheomalacia">tracheomalacia</a></li>~~
+<li><a href="/articles/tracheomalacia">tracheomalacia</a></li>
~~-<a title="Mounier-Kuhn syndrome" href="/articles/mounier-kuhn-syndrome">Mounier-Kuhn syndrome</a>: there is background tracheal dilatation</li>~~
+<a href="/articles/mounier-kuhn-syndrome">Mounier-Kuhn syndrome</a>: there is background tracheal dilatation</li>
~~-<a title="Relapsing polychondritis" href="/articles/relapsing-polychondritis">relapsing polychondritis</a>: there is background tracheal cartilage thickening</li>~~
+<a href="/articles/relapsing-polychondritis">relapsing polychondritis</a>: there is background tracheal cartilage thickening</li>
-<a title="Chronic obstructive pulmonary disease (COPD)" href="/articles/chronic-obstructive-pulmonary-disease-1">chronic obstructive pulmonary disease (COPD)</a>: can be observed in a subset of COPD patients 1,8.
+<a href="/articles/chronic-obstructive-pulmonary-disease-1">chronic obstructive pulmonary disease (COPD)</a>: can be observed in a subset of COPD patients 1,8.
-</ul><h4>Treatment and prognosis</h4>The prognosis depends of the severity of the condition. Varied management strategies have been proposed with some authors suggested tracheoplasty for selected cases 7.
+</ul><h4>Treatment and prognosis</h4>The prognosis depends of the severity of the condition. Varied management strategies have been proposed with some authors suggested tracheoplasty for selected cases 7.

References changed:

1. Boiselle PM, Michaud G, Roberts DH et-al. Dynamic expiratory tracheal collapse in COPD: correlation with clinical and physiologic parameters. Chest. 2012;142 (6): 1539-44. <a href="http://dx.doi.org/10.1378/chest.12-0299">doi:10.1378/chest.12-0299</a> - <a href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3515027">Free text at pubmed</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/22722230">Pubmed citation</a>
2. Boiselle PM, Litmanovich DE, Michaud G et-al. Dynamic expiratory tracheal collapse in morbidly obese COPD patients. COPD. 2013;10 (5): 604-10. <a href="http://dx.doi.org/10.3109/15412555.2013.781149">doi:10.3109/15412555.2013.781149</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/23837455">Pubmed citation</a>
3. Leong P, Bardin PG, Lau KK. What's in a name? Expiratory tracheal narrowing in adults explained. Clin Radiol. 2013;68 (12): 1268-75. <a href="http://dx.doi.org/10.1016/j.crad.2013.06.017">doi:10.1016/j.crad.2013.06.017</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/23953005">Pubmed citation</a>
4. Kalra A, Abouzgheib W, Gajera M et-al. Excessive dynamic airway collapse for the internist: new nomenclature or different entity?. Postgrad Med J. 2011;87 (1029): 482-6. <a href="http://dx.doi.org/10.1136/pgmj.2010.111948">doi:10.1136/pgmj.2010.111948</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/21565878">Pubmed citation</a>
5. Murgu SD, Colt HG. Tracheobronchomalacia and excessive dynamic airway collapse. Respirology. 2006;11 (4): 388-406. <a href="http://dx.doi.org/10.1111/j.1440-1843.2006.00862.x">doi:10.1111/j.1440-1843.2006.00862.x</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/16771908">Pubmed citation</a>
6. O'Donnell CR, Litmanovich D, Loring SH et-al. Age and sex dependence of forced expiratory central airway collapse in healthy volunteers. Chest. 2012;142 (1): 168-74. <a href="http://dx.doi.org/10.1378/chest.11-2361">doi:10.1378/chest.11-2361</a> - <a href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3418856">Free text at pubmed</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/22194588">Pubmed citation</a>
7. Wright CD, Grillo HC, Hammoud ZT et-al. Tracheoplasty for expiratory collapse of central airways. Ann. Thorac. Surg. 2005;80 (1): 259-66. <a href="http://dx.doi.org/10.1016/j.athoracsur.2005.01.032">doi:10.1016/j.athoracsur.2005.01.032</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/15975378">Pubmed citation</a>
8. O'Donnell CR, Bankier AA, O'Donnell DH et-al. Static end-expiratory and dynamic forced expiratory tracheal collapse in COPD. Clin Radiol. 2014;69 (4): 357-62. <a href="http://dx.doi.org/10.1016/j.crad.2013.11.003">doi:10.1016/j.crad.2013.11.003</a> - <a href="http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4005374">Free text at pubmed</a> - <a href="http://www.ncbi.nlm.nih.gov/pubmed/24361144">Pubmed citation</a>

Systems changed: