Dynamic tracheal collapse
Updates to Synonym Attributes
Updates to Synonym Attributes
Updates to Primarylink Attributes
Updates to Article Attributes
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 phase 4.
Clinical presentation
It may cause a variety of symptoms such as dyspnoea, wheeze, and exercise intolerance 3.
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 <sup>1,8.</sup>- +<a href="/articles/chronic-obstructive-pulmonary-disease-1">chronic obstructive pulmonary disease (COPD)</a>: can be observed in a subset of COPD patients <sup>1,8.</sup>
-</ul><h4>Treatment and prognosis</h4><p>The prognosis depends of the severity of the condition. Varied management strategies have been proposed with some authors suggested tracheoplasty for selected cases <sup>7</sup>.</p><p> </p><p> </p><p> </p><p> </p><p> </p><p> </p>- +</ul><h4>Treatment and prognosis</h4><p>The prognosis depends of the severity of the condition. Varied management strategies have been proposed with some authors suggested tracheoplasty for selected cases <sup>7</sup>.</p>
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><span class="auto"></span>
- 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><span class="auto"></span>
- 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><span class="auto"></span>
- 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><span class="auto"></span>
- 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><span class="auto"></span>
- 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><span class="auto"></span>
- 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><span class="auto"></span>
- 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><span class="auto"></span>
Systems changed:
- Chest