Pseudomonas Flashcards

1
Q

Gram stain

A

Gram negative rods

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2
Q

Oxygen requirements

A

Facultatively anaerobic

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3
Q

Special characteristics of pseudmonas, aeromonas, burkholderia

A

Oxidative metabolism (oxidase positive)
and nonfermentative

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4
Q

Is pseudomonas motile

A

Yes

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5
Q

Pseudomonas pigment

A

Pyocyanin ( green blue) and fluoroscien (yellow/green)

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6
Q

Special characteristics of P. aeruginosa

A

-Smells like grape
-Aminoacetophenone
-Hemolytic

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7
Q

Habitat

A

-Skin
-Mucous membrane
-Intestinal tract
-Feces
-Water
-Soil
-These have lower virulence and are opportunistic

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8
Q

Modes of infection

A

-Wound infections
-Oral
-Inhalation
-Injections and catheterizations
-Into teat

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9
Q

Predisposing factors

A

-Defect in defense mechanisms
-Major nosocomial
-Immunocompromised

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10
Q

Virulence factors

A

-Exotoxins: A,S,T, U, and V
-Protease
-Hemolysin (phospholipase)
-Pyocins
-Endotoxins
-Pili
-Flagella
-Clinical isolates produce more toxins

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11
Q

Pathogenicity

A

Either cause tissue damage due to toxins in acute disease or tissue damage due to immune response in chronic disease. Leads to suppurative and necrotizing

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12
Q

Swine disease

A

-Necrotic pneumonia, rhinitis, enteritis
-Abscesses
-UTI and GTI

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13
Q

Cattle diseases

A

-Abscesses at infection sites
-Enteritis
-Mastitis
-Pneumonia (foreign body)
-UTI and GTI

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14
Q

Horse disease

A

-Genital tract infections
-Corneal ulcerations (sand from racing)
-Guttural pouch infection
-Pneumonia

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15
Q

Dog and cat disease

A

-Otitis externa
-Prostatitis
-Cystitis
-Dermatitis
-Opthalmitis
-Post op infections

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16
Q

Poultry diseases

A

-Septicemia
-Respiratory infections

17
Q

Sheep diseases

A

-Green wool dermatitis

18
Q

Minks and chinchillas diseases

A

Hemorrhagic pneumonia due to inhalation and is very fata

19
Q

Human infections

A

-Skin infections, especially burn patients
-Catheter site infections
-Lung infections in CF patients

20
Q

Control measures

A

-No commercial vaccines
-Bacterins may help

21
Q

Treatment

A

-Need to do antibiotic susceptibility
-Gentamicin
-Fluoroquinolone
-B lactam (imipenam)