2 - pyoderma Flashcards
pyoderma in a dog is usually a result of
bacterial folliculitis and furunculosis
cats with pyoderma usually resulted from
cellulitis and abscess due to bite wound - self trauma , pasteurella multocida
what is the physical natural barrier to infection
stratum corneum, hair
what is hte physiologic barrier to infection
turnover rate , sebum
what is the immunologic natural barrier to infection
langerhan cells, lymphocyte, immunoglobulins, sweat
what are the dog and cat normal resident bacteria of the skin
staphylococcus
what is a list of the transient gram negative organisms
E. coli, proteus mirabilis, pseudomonas
what is a list of the gram positive transient organisms of skin
staph, corneybacterium, and streptococcus
what is the major pathogen causing pyoderma in dogs
staph. psudintermedius
what is the main pathogen from skin lesions in cats causing pyoderma
staph. pseudintermedius and staph. aureus
staph sp are frequently what positive
beta lactamase
what is the turn over time for stratum corneum
21 days
the pathophysiology of pyoderma is secondary to disease that
alters barrier function, alters micro-environment, and suppresses immune system
examples of resident bacteria
staph, micrococcus, strep
what is an example of a coagulase positive staphylococci
staphylococcus psudintermedius
what is a possible pathogen stain for a dog whose owner works at a hospital
staphylococcus aureus
what pathogen is a recurrent and resistant infection in dogs
staph. schleiferi
staphy is frequently
beta lactamase positive
methicillin resistance
implies resistance to all penicillin rugs including those resistant to beta lactamase
multi drug resistance
resistance to 3 or more antibiotic classes
extensively drug resistant
only 1 or 2 classes remain
3 pyoderma clasifications
surface colonization , superficial, and deep
what is surface colonization of pyoderma
bog, skin erosions with secondary adherence and colonization of abnormal skin surface by coagulase positive staph
skin fold dermatitis is an example of whihc pyoderma
surface colonization
what is the pathophysiology of skin fold dermatitis
anatomical defects create warm moist environment for bacterial adherence and colonization
what are the clinical signs of skin fold dermatitis
erythema, alopecia, exudation within skin folds, may be prutitic, have offensive odor
skin fold dermatitis must be differentiated from
folliculitis/ furunculosis, malassezia
how do you diagnose skin fold dermatitis
history, pe, scrape, surface cytology , response to treatement
how do you treat skin folds dermatitis
topical antibacterials, antifungals, do not use with combination steroids , keep folds dry
what is a superficial pyoderma
infection restricted to under the stratum corneum or within the ostia of hair follicles
what are the 2 divisions of superficial pyoderma
impetigo and folliculitis
intertrigo
skin fold dermatitis
impetigo
puppy pyoderma
What is impetigo
Infection just beneath stratum corneum fo the non haired areas
Impetigo is usually in what age of dogs
Less than 1 year
What is the main differential of impetigo
Demodicosis
How do you diagnose impetigo
Physical exam , scrape, démodé
What are the types of superficial pyoderma
Impetigo, folliculitis
Where is folliculitis
Starts in Ostia of hair follicle and spreads outward under the stratum corneum
Location of folliculitis lesion
Trunk
What are clinical signs of superficial folliculitis
Papule, pustules, crusted papules, collarettes
Pathophysiology of folliculitis
Secondary to underlying cause
Examples of infectious folliculitis
Pyoderma, demodex, dermatophyte
Treatment of folliculitis
Do not undertreat, do not use steroids, ID underlying cause
Pyoderma in cats is a result of
Self trauma
What is the pathophysiology of pyoderma
Secondary to disease that alters barrier function, alters micro environment, suppresses immune system
What are resident bacteria
Staphylococcus, Micrococcus , Strep
Transient organisms for pyoderma
E. coli, proteus, pseudomonas, staph, strep, corneybacterium
What are the major pathogen in dogs
Staph. Psudintermedius and Staph schleiferi
Staphy sp are frequently
Beta lactamase positive
Methicillin resistance is due to
Altered penicillin binding protein with poor affinity for B lactam antibiotics
3 classifications of pyoderma
Surface colonization, superficial and deep
Example of surface colonization pyoderma
Skin fold dermatitis
Skin fold dermatitis must differentiate from
Folliculitis , malassezia dermatitis
Superfifical pyoderma
Infection under stratum corneum or within hair follicles
Superficial pyoderma is usually
Staph infection
Where is impetigo found
Nonhaired areas of axilla and groin
