Exam 2 Flashcards
Dorsally Displaced Soft Palate (DDSP): Type of Stridor
without distress
When is DDSP seen?
during exercise
DDSP: Signs
exercise intolerance, noise, expiratory component, cheek puffing
DDSP: Dx
signs, endoscopy
DDSP: Tx
treat concurrent dz, tongue tie, Cornell collar, sx - tie forward
Epiglotic Entrapment: Pathophysiology
aryepiglottic and subepiglottic tissue envelop epiglottis
Epiglotic Entrapment: Signs
exercise intolerance, inspiratory and expiratory noise, chronic cough
Epiglotic Entrapment: Dx
signs, endoscopy
Epiglotic Entrapment: Tx
Stall rest, sx - laser scalpel correction
Laryngeal Hemiplegia: Pathophysiology
paralysis +/ paresis of arytenoids from nerve irritation/inflammation
Laryngeal Hemiplegia: Signs
exercise intolerance, inspiratory noise (roar)
When is Laryngeal Hemiplegia seen?
during exercise
Laryngeal Hemiplegia: Dx
signs, endoscopy, electrolaryngeography
How is Laryngeal Hemiplegia graded?
range of motion of arytenoids
Laryngeal Hemiplegia: Grades
I/II - full abduction at rest and most of extercise IIIA - abduction in exercise IIIB - incomplete abduction IIIC - severe collapse at exercise IV - paralysis evident at rest
Laryngeal Hemiplegia: Tx
tie-back, ventriculectomy (reduces noise)
Stridor w/ Respiratory Distress: Etiologies
upper airway obstruction, tracheal collapse, pulmonary dz
Upper Airway Obstruction: Examples
strangles, bilateral laryngeal hemiplegia, lymphosarcoma, gutteral pouch tympany
Pulmonary Dz: Adult Examples
RAO, Acute viral pneumonia, interstitial pneumonia, diaphragmatic hernia, pneumothorax
Pulmonary Dz: Young Examples
Rhodococcus equi, interstitial pneumonia, acute viral respiratory dz
Acute Cough: Etiologies
equine influenza, equine herpesvirus, equine viral arteritis, trauma
Equine Influenza: Signalment/Environment
young, poor ventilation, crowded
Equine Influenza: Signs
pyrexia, lymphadenopathy, dry harsh non-productive cough
Equine Influenza: Sequelae/complications
purpura hemorrhagica (immune mediated vasculitis)
Equine Influenza: Tx
NSAIDs, rest (1wk/day of fever), ventilation
Equine Herpes Virus: Important Serotypes
EHV-1, EHV-2
EHV-1: Signs
cyclic fever spikes, depression, anorexia, abortion
EHV-1: Tx
NSAIDs, rest
EHV-2: Signs
respiratory dz in young horses
Equine Viral Arteritis: Pathogenesis
replication in bronchial macrophages
Equine Viral Arteritis: Signs
fever, anorexia, depression, abortion (any stage)
Equine Viral Arteritis: Dx
CBC - lymphopenia
Equine Viral Arteritis: Tx
supportive, NSAIDs
Chronic Cough: Etiologies
Upper Airway - Arytenoid Chondritis, trauma, foreign bodies
Lower Airway - Inflammatory airway Dz, Recurrent Airway Obstruction, parasites
Arytenoid Chondritis: Signalment
young thoroughbreds
Arytenoid Chondritis: Pathophysilogy
progressive cartilage enlargement => space occupying mass, dec. abduction
Inflammatory Airway Dz: Signalment
young racers
IAD: Etiology
irritants in the air
IAD: Pathophysiology
airway inflammation + hyper-reactivity
IAD: Signs
dec. performance, elicitable cough
IAD: Dx
endoscopy (mucopurulent exudate), BAL (for typng)
IAD: Types
Type 1 - mild neutrophilia, monocytosis, lymphocytosis
Type 2 - inc. mast cells
Type 3 - eosinophilic inflammation
IAD: Tx
dec. irritants, bronchodilators
Type 1 - interferon alpha
Type 2 - Mast cell stabilizers
Type 3 - Corticosteroids
Recurrent Airway Obstruction: Pathogenesis
allergies, small airway obstruction (bronchoconstriction, excessive inflammatory exudate)
RAO: Signs
middle aged, flared nostrils, cough, nasal discharge, exercise intolerance, diffuse expiratory noise, heave line
RAO: Dx
signs, BAL (neutrophilic inflammation), TTW (culture), endoscopy (yellow exudate)
RAO: Tx
keep outside, soak hay (15-20 min), corticosteroids, bronchodilator (terbutaline), inhalants (beclomethasone)
RAO: Complication
secondary bact - Strep. zooepidemicus, Actinobacillus
Respiratory Parasites: Examples
Lung worm, Parascaris equorum
Lung worm: Risk Factor
housed with donkeys
Lung worm: Dx
TTW, baerman
Lung worm: Tx
-bendazole
Parascaris equorum: Signalment
less than 10 mo
Interstitial Pneumonia: Etiology
infectious, toxic, hypersensitivity
Interstitial Pneumonia: Signs
fever, cough, nasal discharge, exercise intolerance, dyspnea, cyanosis, heave line, nostril flare
Interstitial Pneumonia: Dx
Rads (extensive interstial + bronchointerstitial pattern), histo
Guteral Pouch Empyema: Etiology
Strep. zooepidemicu/equi
Guteral Pouch Empyema: Signs
intermittent nasal discharge, lymphadenitis, dysphagia
Guteral Pouch Empyema: Dx
rads, endoscopy
Guteral Pouch Empyema: Tx
flush pouch (under sedation), antibiotics, sx
Strangles: Signalment
young/immunodeficient horses
Strangles: Signs
fever, depression, nasal discharge (purulent), cough, swollen submandibular LN
Strangles: Tx
antibiotics, iso