Upper Airway Flashcards
(32 cards)
who is typically affected by lar par/GOLPP/LPN?
older, medium to large breed dogs
labrador retrievers: 70% of cases
what does lar par/GOLPP/LPN look like clinically?
paralysis of intrinsic laryngeal muscles
slow, progressive pelvic limb weakness
what does recurrent laryngeal nerve dysfunction impair?
arytenoid cartilage abduction
what are the causes of recurrent laryngeal nerve dysfunction?
idiopathic
congenital
associated with diffuse neuromuscular disease
traumatic
iatrogenic
neoplastic
should you place a dog with hyperthermia in ice water?
no: vasoconstriction, and core body temperature will continue to rise
what is required for correct diagnosis of lar par/GOLPP/LPN?
thoracic radiographs
what is breathing like with lar par?
paradoxic
what is done in a tie-back?
muscular process of arytenoid cartilage is sutured to caudal border of cricoid cartilage
what are the primary components of brachycephalic obstructive airway syndrome?
stenotic nares
elongated and thickened soft palate
hypoplastic trachea
what is the most common component of the brachycephalic obstructive airway syndrome?
elongated soft palate
what are the surgical treatments of brachycephalic obstructive airway syndrome?
staphylectomy
widening nasal passages
laryngeal sacculectomy
what are the landmarks for surgery on an elongated soft palate?
mid-tonsillar crypt
what is tracheal collapse?
idiopathic loss of rigidity of tracheal cartilages
how does the trachea collapse in tracheal collapse?
dorsoventral direction
cervical: on inspiration
thoracic: on expiration
how long can you usually manage tracheal collapse before surgery?
2 years
is lar par/geriatric-onset laryngeal paralysis and polyneuropathy/late-onset peripheral neuropathy demyelinating?
no
generalized loss of axons
what are the causes of recurrent laryngeal nerve dysfunction?
idiopathic
congenital
associated with diffuse neuromuscular disease
traumatic
iatrogenic
neoplastic
what do all rottweilers and leonbergers have?
rapidly progressive polyneuropathy
when does congenital laryngeal paralysis show up?
3-7 months of age
when do most develop clinical signs of lar par?
bilateral paralysis has developed
why should you check the body temperature in inspiratory dyspnea?
heatstroke
hyperthermia-induced DIC
>106
presence of peripheral nRBCs: diagnostic and prognostic
what does megaesophagus make more likely?
post-op aspiration pneumonia
what do dogs have an increased risk of after getting arytenoid lateralization surgery?
aspiration pneumonia- for life
where does the afferent/sensory branch of the recurrent laryngeal nerve sense?
pharynx
esophagus
trachea
