50. Tracheitis and bronchitis; infectious bovine rhinotracheitis Flashcards
laryngitis independently
foreign body - aspiration, aujeszky, rabies, paralysis of laryngeal muscles
contact ulcer
laryngitis as part of other disease
anthrax
mycoplasmosis
tuberculosis
pox viral infection in poultry
things that can affect the trachea
developmental anomalies
regressive changes
circulatroy disturbances
inflammations
tumours
parasite
types of developmental anomalies in trachea
hypoplasia, dysasia
causes of tracheitis
mechanical factors (defense mechanism)
infectious causes
bacteria, virus, spores of moulds, parasites
dieases causing infectious laryngotracheitis
tuberculosis in cattle
infectious bronchitis
turkey rhinotracheitis
swollen head disease
resp mycoplasmosis
bordetellosis of turkey
acute fibrinonecrotic tracheitis in what species
swine, cattle (honker syndrome)
lesions of acute fibrinonecrotic tracheitis
oedema, haemorrhage
tracheal injury due to coughing
death
pathological changes in bronchi
PM changes
circulatory disturbances
regressive changes
inflammations
tumours
developmental anomalies
causes of bronchitis
virus, bacteria, parasites
physiochemical stimuli, allergens, toxins
types of bronchitis
independent
together with upper resp diseases
part of other resp infections
spreading
exudative inflammation of macrobronchitis
– bronchitis catarrhalis acuta
– bronchitis catarrhalis chronica
– bronchitis purulenta
– bronchitis crouposa
– bronchitis diphteroides
– bronchitis haemorrhagica
– bronchitis putrida
– bronchitis necroticans
– bronchitis granulomatosa
microbronchitis
endobronchiolitis
peribronchiolitis
endobronchiolitis
– serous, (s –)desquamative, purulent
– proliferative (epithel, connective tissue)
– granulome formation (pneumomycosis)
peribronchiolitis
acute, subacute, chronic
peribronchitis nodosa with segmental thickening
consequence of bronchitis
non - healing
changes in the lumen
atelectasis
emphysema
pneumonia
amyloidosis - secondary
changes in the lumen
narrowing
*bronchostenosis
*obturation
*compression
dilation
*bronchiectasia - permanent
Bronchiectasia pathogenesis
remodelling the wall of the bronchus
elastic elements of the wall disintegrate
CT proliferates instead
cannot resist the pressure or pulling
accumulation of the inflammatory exudate
shrinking of ct
forms of Bronchiectasia
– Atrophic - wall of the bronchus narrower
– Hypertrophic - thickening of the wall
appearance of Bronchiectasia
– Cylinder like (br onchiectasia cylindriforme)
– Spindle like (br. fusiforme)
– Sack like (br. sacciforme)
BHV 4/Movar infection of cattle
- Aerogenous infection
- Proliferation in the mucosa
- Destruction of the mucosa in less ventilated area of lung
consequence of Bronchiectasia
local changes
abortion
immune suppression
acute interstitial pneumonia
necrotic bronchopneumonia
pathology of Bronchiectasia
*In the cranial and medial lobes
– Unevenly dilated bronchi
– Filled with muco purulent exudate
– Connective tissue in the bronchus wall
–Atrophy of the parenchyma
*Regional lymph nodes
– Chronic inflammatory reactions
infectious bovine rhinotracheitis etiology
herpes virus
alphaherpes virus
varicellovirus
