How are aortic arch anomalies differentiated from asthma?

Updated: Jan 07, 2019
  • Author: Michael J Morris, MD, FACP, FCCP; Chief Editor: Zab Mosenifar, MD, FACP, FCCP  more...
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Answer

Aortic arch anomalies may occur later in adulthood. In one case, the anomalies, which simulated exercise-induced asthma, were noticed first in a young woman only after a vigorous exercise program. [53] On testing, the flow-volume display of this patient suggested an intrathoracic obstruction. The patient had a right aortic arch with ligamentum arteriosum that extended anterior to the trachea. This condition caused constriction when increased pulmonary blood flow, oxygen demand, and tracheal airflow and decreased intratracheal pressure from downstream turbulence distal to the tracheal ring occurred with exercise; combined, these factors produced wheezing and dyspnea.


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