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| ===Acute bronchitis/bronchiolitis=== | | ===Acute bronchitis/bronchiolitis=== |
| [[Image:bronchiolitis.jpg|right|thumb|100px|<small><center>Bronchiolitis (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]] | | [[Image:bronchiolitis.jpg|right|thumb|100px|<small><center>Bronchiolitis (Image sourced from Bristol Biomed Image Archive with permission)</center></small>]] |
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| ***Underlying bronchial mucos is thickened, hyperaemic and oedematous | | ***Underlying bronchial mucos is thickened, hyperaemic and oedematous |
| ***May be a coexisting bronchopneumonia | | ***May be a coexisting bronchopneumonia |
− | ***Smooth muscle hypertrophy in pulmonary arteries -> [[Lungs Circulatory - Pathology#Pulmonary hypertension|'''pulmonary hypertension''']] -> [[Cor Pulmonale|'''cor pulmonale''']] | + | ***Smooth muscle hypertrophy in pulmonary arteries -> [[Pulmonary Hypertension|'''pulmonary hypertension''']] -> [[Cor Pulmonale|'''cor pulmonale''']] |
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| **Parasites | | **Parasites |
| **Allergens | | **Allergens |
− | **Metabolic activation of compounds by Clara cells in the bronchioles (eg: [[Lungs Inflammatory - Pathology#Acute bovine pulmonary emphysema and oedema (ABPEE)|Fog Fever in cattle]]) | + | **Metabolic activation of compounds by Clara cells in the bronchioles (eg: [[Acute Bovine Pulmonary Emphysema and Oedema|Fog Fever in cattle]]) |
| *Bronchioles are more susceptible to obstruction than bronchi and the epithelium is highly susceptible to injury due to [[Respiratory System General Introduction - Pathology#Bronchioles|changed anatomy]] | | *Bronchioles are more susceptible to obstruction than bronchi and the epithelium is highly susceptible to injury due to [[Respiratory System General Introduction - Pathology#Bronchioles|changed anatomy]] |
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| **Increased respiratory noise (crackles, wheezes) | | **Increased respiratory noise (crackles, wheezes) |
| **Reduced oxygenation, exercise intolerance, lethargy | | **Reduced oxygenation, exercise intolerance, lethargy |
− | **Collapse of areas of the lung ([[Lungs Ventilation - Pathology#Atelectasis (Collapse)|atelectasis]]) | + | **Collapse of areas of the lung ([[Atelectasis|atelectasis]]) |
− | **Overinflation of other parts of the lung ([[Lungs Ventilation - Pathology#Emphysema|emphysema]]) | + | **Overinflation of other parts of the lung ([[Pulmonary Emphysema|emphysema]]) |
| **Chronic cough | | **Chronic cough |
− | **[[Lungs Inflammatory - Pathology|Pneumonia]] following inhalation of inflammatory exudate/infectious material within it | + | **[[Pneumonia Overview|Pneumonia]] following inhalation of inflammatory exudate/infectious material within it |
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| ='''Infectious causes of bronchitis or bronchiolitis'''= | | ='''Infectious causes of bronchitis or bronchiolitis'''= |