Resp Sx in Cattle Flashcards
What are congenital causes of nasal obstruction?
Conchal cyst or choanal atresia
What are acquired causes of nasal obstruction?
Granulomas, polyps, neoplasia
What causes pharyngeal trauma?
FB, iatrogenic
Emergency procedure for laryngeal alterations
Temporary tracheostomy
Where do you perform a temporary tracheostomy?
Cranial 1/3 of the neck
Sharp excision of cricoid and 3 tracheal rings
Laryngotracheaostomy
How wide can a permanent tracheostomy be?
Up to 1/3 of tracheal diameter
Palatoschisis
Cleft palate
In which species is cleft palate inherited?
Charolais and Hereford
Regurg of milk from nose, aspiration pneumonia, failure to thrive
Cleft palate
How do you treat cleft palate?
Mandibular symphysiotomy
Where is head trauma most common?
Base of horn
How do you stabilize a sinus fracture?
6-8wk metal bar splint from horn to horn
Which nerve branches into the cornual nerve?
Zygomaticotemporal nerve
Which artery branches into the cornual artery?
Superficial temporal artery
Which animals can you use chemical or thermal dehorning and why?
Young calves - no opening to sinus yet
How much haired skin must be included when dehorning a cow?
1cm
Dehorner used for calves 3mo-1yr
Scoop/Barnes dehorner
Dehorner for large horns but not used often b/c cows are usually dehorned before they get big enough to need this tool
Keystone dehorner
How do you close a dehorn?
Mattress or simple interrupted
What are complications of dehorning?
Hemorrhage, infection
Most commonly 2* to dehorning
Sinusitis
Which sinus is most commonly affected by sinusitis?
Frontal
How do you access the sinuses surgically?
Trephanation or bone flap
How do you treat sinusitis?
Open drainage and LRS/0.9% NaCl lavage
What is the most commonly isolated pathogen from a sinusitis 2* to dehorning?
Arcanobacterium pyogenes
What pathogen is often assoc. w/sinusitis unrelated to dehorning?
Paturella multocida
