respiratory and thoracic sx Flashcards
what defines the upper airway
nares to the larynx
anatomical disease of the nasal cavity
choanal atresia
what is the main infectious nasal cavity cause in dogs
aspergillosis
what is the main infectious nasal cavity cause in cats
cryptococcus
4 neoplasias common in the nasal cavity
adenocarcinoma
SCC
lymphoma
mast cell tumors
what category of nasal disease does nasopharyngeal stenosis fall into
inflammatory
differentials for nasal disease
dental disease
nasopharyngeal polyp
diagnostic imagine tool that is good for nasal disease
computed tomoography
T/F
rhinoscopy and nasopharangoscopy should be performed before imaging is done
FALSE - after imaging
T/F
bacterial cultures are unlikely to be helpful in diagnostics of nasal disease
true
most common indication for nasal surgery
neoplasia – SCC
nasal palnum resection
dorsal rhinotomy gives access to …
nasal cavity and sinuses
ventral rhinotomy gives access to..
ventral nasal cavity and choanae
Shortened and broadened skull
brachycephalic
local chondrodysplasia
results in early ankylosis of basioccipital and basisphenoid bones
2 brachycephalic cat breeds
persian and himalayan
most important primary disease component of brachycephalic airway syndrome
elongated soft palate
list 4 primary disease components of bracycephalic airway syndrome
- stenotic nares
- elongated soft palate
- everted laryngeal saccules/stage 1 laryngeal collapse
- hypoplastic trachea
secondary soft tissue changes that occur due to the higher negative pressures in upper airway obstructive disease
edema
hyperplasia
collapse
air passage through nasal cavities accounts for ___% airway resistance
76.5%
epiglottis should overlap palate by ____mm at the midline
1-2mm
the palate should extend to mid-ventral ___ of the tonsilar crypt laterally
1/3
elongated soft palate mainly results in
inspiratory dyspnea
what is stertor
inspiratory dyspnea at the nasal/pharyngeal area
what is stridor
dyspnea at the laryngeal area
what is stage one of laryngeal collapse
everted laryngeal saccules
what happens in stage 2 of laryngeal collapse
collapse of cuneiform cartilage
what happens in stage 3 of laryngeal collapse
collapse of corniculate cartilage rigidity
laryngeal collapse is reported in what percentage of dogs evaluated for BAS
8-50%
T/F
loss of cartilage rigidity may cause stertor in the end stages of laryngeal collapse
FALSE – stridor
what is the treatment for hypoplastic tracheas
none
which sex gets more hypoplastic tracheal
males
age range common for hypoplastic tracheas
2-3 years
younger for english bulldogs
a dog comes in with owner complaints that it is fatiguing easily and is snoring a lot more than normal also reversed sneezing
mild/moderate hypoplastic trachea
2 year old bulldog comes in on emergency acute resp distress as well as cyanosis, and hyperthermia
there is severe upper airway swelling and NCPE
SEVERE hypoplastic trachea
how can hypoplastic trachea be diagnoses
on thoracic rads there will be R heart enlargement, potential megesophagus, NCPE, hiatal hernia, and aspiration pneumonia
order for upper airway exam
tonsils
soft palate
nasopharynx
aretynoid cartilages
what is a staphylectomy
soft palate resection
severe post operative complication in layngeal sx
aspiration pneumonia
3 functions of the larynx
swallowing - rima glottis pulled forward
abduction - lowers air resistance on inhalation
voice production
T/F
laryngeal neoplasias are common
false
T/F
respiratory stertor is a clinical sign of laryngeal disease
FALSE - stridor
the recurrent laryngeal nerve and caudal laryngeal nerve are branches of …
vagus nerve
signalment of acquired laryngeal paralysis
large breed older dogs
recommended treatment for laryngeal paralysis
unilateral arytenoid lateralization
in laminar flow resistance to flow is inversely proportional to the radius to the fourth power
poiseuille’s law
life long complication of unilateral arytenoid lateralization
aspiration pneumonia
Devocalization
ventriculocordectomy
laryngeal exams should be performed in all patients showing signs of ….
upper airway obstruction