Respiratory Literature Flashcards
How is primary ciliary dyskinesia inherited?
Recessive = inherited disease
What gene has worldwide distribution in Old English Sheep dogs that results in primary ciliary dyskinesia?
CCDC39
What did the 6 min walk test show in dogs?
Dogs with mild to moderate pulmonary hypertension (n=6) compared to healthy dogs (n=69) walked a shorter distance (about 384m compared to 522m)
Conclusion: Can be used to discriminate healthy dogs from dogs with pulmonary disease.
What were the most common isolates from BALs of dogs with spontaneous respiratory disease?
Most common isolate was Mycoplasma spp. followed by Pasteurella sp., Bordetella sp, Enterobacteriaceae, and anaerobes
Based on BALs of dogs with spontaneous respiratory disease how many had single bacterial spp vs multiple spp?
Single: 44%
Multiple: 56%
Based on BALs of dogs with spontaneous respiratory disease, 105 dogs with positive cultures, how many had cytologies that agreed?
Only 74% had cytologic evidence of septic suppurative inflammation
Based on BALs of dogs with spontaneous respiratory disease, if they lacked cytologic evidence of sepsis what was reported and which spp were seen?
27 dogs that lacked cytologic evidence of sepsis, mixed (n=18) and neutrophilic (n=9) inflammation was reported, and Mycoplasma spp. (13/27) or Bordetella spp. (7/27) were most commonly isolated
Why is confirmation of lower respiratory tract infection in dogs challenging?
Organisms can be isolated from dogs which bacteria are NOT detected on cytology
What can be concluded from multisegment BALs in cats?
Total and differential cell counts on BAL fluid often differed btwn lung segments in cats with lower respiratory disease
Caution with single BAL cytology to define the inflammatory response in cats with spontaneous lower respiratory dz*
How much did cell counts differ in multisegment BALs in cats?
28/87 cases (32%), cell counts differed between lavage sites by 2.2-40 fold.
BAL yielded similar cytologic interpretation of inflammation in 45/87 (52%) cases
8/14 cases BAL performed at focal infiltrate + site of diffuse infiltrates = same inflammatory interpretation was made at each site
How did suction pump aspiration compared to manual aspiration in retrieval of BAL fluid in dogs with respiratory disease?
percentage of retrieved BALF (P = .001) was significantly higher for SPA than MA. Substantial agreement was found between cytologic classification of BALF obtained with MA and SPA (kappa = 0.615). There was no significant difference in rate of definitive diagnosis achieved with cytologic assessment between techniques (P = .78)
Suction pump aspiration, compared to MA, improved BALF retrieval, but did not significantly affect the rate of diagnostic success of bronchoalveolar lavage (BAL) in dogs with pulmonary disease.
Does aspiration technique for retrieval of BAL fluid affect sample quality in healthy dogs?
Yes
What can be said about bronchoscopic findings in cats with spontaneous lower airway disease?
Endobronchial abnormalities were common in cats with feline bronchitis/asthma, pneumonia, and neoplasia and no differentiating features were found.
Excessive mucus accumulation was common (83%), followed by stenosis of bronchial openings and nodular epithelial irregularities (56%), airway hyperemia (54%), airway collapse (48%), and bronchiectasis (27%).
Total bronchoscopic score and total cell count did not differ among groups, although differential cell counts were significantly different
What weak correlation was noted in bronchoscopic findings (score) in cats with spontaneous lower airway disease?
weak correlation (R² = 0.16, P= .006) between age and total bronchoscopic score was noted
What do bronchoscopic findings in cats with spontaneous lower airway disease provide?
Bronchoscopic abnormalities are common in cats with lower respiratory tract disease, and visualization of the airways provides additional nonspecific clinical information in cats.
How successful was bronchoscopy for removal of FBs?
Bronchoscopy was successful for removal of airway foreign bodies in 76% of animals (24/28 dogs and 2/5 cats)
Bronchoscopy was successful in removing airway foreign bodies regardless of animal size or long duration of clinical signs
Was bronchoscopic FB removal success related to duration of CS or body size?
Dogs was independent of duration of clinical signs or body size
Not noted in cats (only 2/5 cats had the FBs removed)
How helpful were thoracic radiographs for localizing FBs prior to bronchoscopy?
radiography was unable to predict the affected site.
One-third of thoracic radiographs lacked distinctive features of an airway foreign body
What was noted in the BAL fluid from site of FBs?
BAL fluid at the site of the foreign body contained more neutrophils and more often had intracellular bacteria than lavage fluid from a separate site
Alternative site had more marcophages (appeared more normal)
What is unique about the Upper Airway Obstruction in this breed?
Redundant supra-arytenoid folds
Laryngeal collapse, everted laryngeal saccules, and a narrowed laryngeal opening
These abnormalities can be seen without CS on exam or at home
T/F: Intranasal vaccination can stimulate nonspecific immunity against agents not contained within the vaccine.
TRUE
What is true regarding giving an intranasal MLV against FHV-1 and FCV in kittens intranasally inoculated with B. bronchiseptica?
First 10 days after B. bronchiseptica challenge, vaccinated cats were less likely to be clinically ill than control cats
Suggesting: Intranasal vaccination against FHV-1 and FCV decreased signs of illness due to an infectious agent not contained in the vaccine. This nonspecific immunity could be beneficial for protection against organisms for which vaccines are not available and as protection before development of vaccine-induced humoral immunity
What are the 2 different types of bronchial collapse in dogs?
Static and dynamic collapse
What was associated with static and dynamic bronchial collapse in dogs?
Association between SBC and DBC was more frequently seen in the dogs with
higher body weight
Pulmonary hypertension
Bronchial type of radiographic pattern
Nodularity at endoscopic examination
NOTE: 31/39 dogs had tracheal collapse + bronchial collapse