Pulmonary- Bronchiectasis and Asthma Flashcards
Bronchiectasis
Permanent dilation of bronchi and bronchioles caused by destruction of muscle and elastic tissue
Bronchiectasis results from
repeated obstruction and infections causing remodeling, dilation, loss of smooth muscle and elastic tissue, fibrosis
- tenancy to collect secretions, become infected (often seen in patients with cystic fibrosis
Bronchiectasis is manifested by
cough, fever, expectoration of copious, foul smelling purulent sputum
Asthma
Chronic inflammatory airway disorder; symptoms caused by widespread, reversible bronchorestriction, mucus secretion, resulting in obstruction with inadequate ventilation
- atopic and non-atopic causes
Asthma is frequently related to ____ hypersensitivity. Mediated by ____ antigens
type 1; IgE
For asthma, antigen exposure results in pulmonary ______; results in increased _____ permeability and _____ production. It stimulated afferent vagus nerve causing ________ constriction
mast cell degranulation; vascular; mucus; bronchial smooth muscle constriction
In asthma, hallmark cells include _____ (primary trigger), ____ (elevates in CBC_
mast cells, eosinophils
Injury caused by chronic inflammation causes _____ and _____ tissue remodeling
fibrosis and bronchial tissue remodeling
Non- atopic causes of Asthma
stimuli such as exercise and cold can exacerbate asthma, even without exposure to specific antigens; theorized that airway cooling and drying and increased perfusion of bronchial artery leads to vasoconstriction and bronchial edema , resulting tissue changes cause mast cell degranulation
Asthma is classified in 4 categories:
intermittent, mild persistent, moderate persistent, severse persistent