Pseudomonas

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1
Disease Classification
Pseudomonas infection- wound infection
2
Causative Agent
Pseudomonas aeruginosa
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Get to know the Causative Agent
GNR, Facultative aerobe, flagella motility and pilus attachment, antibiotic resistance, biofilms
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Epidemiology: Reservoir
Ubiquitous- animals and their enviroments
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Epidemiology: POE
Compromised tissues
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Epidemiology: MOT
Indirect, direct transmissions; nosocomial infections
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Incubation Period
Variable (hours to days)
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Pathogenesis
Attachement to and colonization of surfaces using flagella and pilli. Secretion of effector protiens (Virulence factors) disrupts tissues and cells. Exotoxin A inhibits translation, proteases digest tissues and inhibit clot formation, and phospholipase digests cell membrane. The toxin pyocyanine produces a greenish color to site of infection
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Symptoms
Skin lesions with green pus, chills, fever, vary based on location (folliculitis, green nail syndrome, keratitis, UTI, pneumonia, etc)
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Complications
Spread of infection to other organs, bacteremia, sepsis, necrotizing lesions, mortality for bacteremia 12-60%
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Treatment
Antiboitics- multidrug, resistant variants
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Prevention
Disinfection of surfaces and equipment, proper aseptic technique, proper wound care and removal of dead tissue
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