Health and diseases exam 3 content Flashcards
(183 cards)
where is the trachea located?
in the middle a little bit towards the left
what is considered part of the upper respiratory tract?
nose through the larynx
what is the normal function of the URT?
- normal flora (viruses, bacteria) are I the URT (nose through larynx)
- mucus lining has mucus secreting cell which helps to remove particles, bacteria, dirt, and pathogens from the air
- serous secreting cells secrete a thing liquid that evaporates
- tonsils in pharyngeal area respond to local pathogens (similar to lymph nodes) - IGA (mucosal antibody) is present on mucous membranes
- normally these flora never reach the lungs (cleared from the URT and teaches by much-cilary elevator) before they reach the lungs
What is the muco-ciliary elevator?
beat up anything stuck to cilia by mucous where it will be coughed and swallowed
What is the passive defense of the respiratory system?
- mucous trapping of debris and pathogens
- mucociliary clearance
- phagocytosis
- air turbulence created by branching airways, coughing and sneezing
What is the active defense of the respiratory system?
- secretion of IgA antibodies
- presentation fo antigen to lymphoid tissue in MALT (mucosal associated lymphoid tissue such as tonsils)
- cell mediated immunity
What are the common causes of URT infections?
- often viral in nature
- causes inflammation of URT and eyes
Where are the cs of URT infections?
- sneezing
- coughing
-ocular discharge (watery/ goopy eyes) - sinusitis (A condition in which the tissue lining the sinuses (small hollow spaces in the bones around the nose) becomes swollen or inflamed.)
- systemic signs such as fever, anorexia
What is the DX of URT infections
-Cs
- sometimes swabs for culture
- PCR or direct staining to determine precise etiological agent ( eg, influenza, strep, chlamydia)
What is the treatment of URT infection?
- Antibiotics to prevent bacterial infections
specific etiological tx if possible (eg, anti yeast drugs if chlamydia, antivirals for influenza, antibiotics for strep)
What is the good supportive care for URT infection?
- keep hydrated (if a vet IV, if at home subcutaneous fluid can’t give as much as IV)
- giving rest
- cleaning eyes and nose
- eye ointment
- keep them warm
- make sure pet is eating
- sometimes antibiotics for secondary infections
What is the problem of having a URT infection
Primary viral respiratory infections can cause damage to respiratory mucosal linings, particularly in trachea (muco-ciliary elevator)
When the mucus producing and ciliated cells of the trachea are damaged, debris and pathogens are not removed from the trachea prior to entering the bronchi; they can get deep into the lungs and cause bronchitis or pneumonia.
Feline respiratory syndrome What can it be caused by (3 things)
- Feline Viral rhinotracheitis (a herpevirus)
- feline calicivirus
- Feline Chlamydia
What is the claim to fame feline calicivirus infection
oral ulceration
what is the claim to fame for Chlamydiosis?
severe conjunctivitis
What is the claim to fame for rhinotracheitis (herpesvirus)
corneal ulcer
What does syndrome mean?
so many things can cause it
What are the upper respiratory signs for feline respiratory syndrome
- sneezing
- nasal discharge
- ocular discharge
- coughing
- fever
-anorexia - depression
What is the Dx for Feline respiratory syndrome
- Cs
- specific tests for agents if needed ( stained conjunctival scraping can reveal microscopic inclusion bodies of chlamydia)
What is the treatment for feline respiratory syndrome
symptomatic support and treatment
What is the prevention for feline respiratory syndrome
- vaccination with standard kitten vaccine
- feline viral rhinotracheitis
- cailcivirus
- panleukopenia
- maintain a clean, non crowed living environment
- quarantine new cats
What is bronchitis?
inflammation of the bronchi and bronchioles (lower airways)
What are the causative agents of bronchitis
- viruses
- respiratory irritants (smoke including secondary smoke, chemicals, air pollution)
- certain bacteria ( bordetella bronchiseptica in dogs, mycoplasma in rodents and other species)
What does chronic mean?
long lasting