Bronchitis pathophysiology: Difference between revisions

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==Overview==
==Overview==
Bronchitis is usually a diagnosis of exclusion. Presence of cough without fever lasting more than 5 days and with normal vitals (no tachypnea or tachycardia) is suggestive of acute bronchitis. The presentation may vary according to the pathogen involved.
[[Acute bronchitis]] is the inflammatory response of the bronchial epithelium to infections or irritants. The pathophysiological finding seen with acute bronchitis include: thickening, hyperemia and edema of the bronchial mucosa. This in turn decreases the bronchial mucociliary function. As a result of which the air passages become clogged by debris and causes copious mucus  secretion, which causes the characteristic cough of bronchitis.
 
==Pathophysiology==
==Pathophysiology==



Revision as of 22:16, 28 February 2012

Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]

Bronchitis Main page

Patient Information

Overview

Causes

Classification

Acute bronchitis
Chronic bronchitis

Differential Diagnosis

Overview

Acute bronchitis is the inflammatory response of the bronchial epithelium to infections or irritants. The pathophysiological finding seen with acute bronchitis include: thickening, hyperemia and edema of the bronchial mucosa. This in turn decreases the bronchial mucociliary function. As a result of which the air passages become clogged by debris and causes copious mucus secretion, which causes the characteristic cough of bronchitis.

Pathophysiology

  • Acute bronchitis is the inflammatory response of the bronchial epithelium to infections or irritants.
  • Thickening of the bronchial and tracheal mucosa due to inflammation is also seen.
  • The hyperemia and edema of the bronchial mucosa decreases the bronchial mucociliary function. As a result of which the air passages become clogged by debris and causes copious mucus secretion, which causes the characteristic cough of bronchitis.
  • In mycoplasma pneumonia, bronchial irritation results from the attachment of the organism to the respiratory mucosa resulting in sloughing of affected cells.
  • Bronchitis caused by influenza virus shows an epithelial-cell desquamation in association with the presence of a lymphocytic cellular infiltrate

References


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