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Lecture 19 Pseudomonas
1. “” بسم ا الرحمن الرحيم
Pseudomonas
Prof. Khalifa Sifaw Ghenghesh
2. Pseudomonas aeruginosa
• Oxidase-positive, Strict aerobe, Gram –ve rods
• A major Cause of Nosocomial Infections.
• Infection Occur in Patients with Altered Host
Defences, Wounds or Burns.
• In Non-Hospitalized Patients:
• Vehicles of Transmission:
3.
4. • LABORATORY DIAGNOSIS:
– On BA
• Irregular, β -hemolytic colonies
• Oxidase-positive
• O-F test >> Aerobic
– On NA
• Bluish, irregular colonies
• TREATMENT
– Resistant to antimicrobial agents
• CONTROL
5. Resistance of Pseudomonas aeruginosa
isolated from different clinical sources
to antibiotics
Antibiotic
No. (%) resistant
(n=235)
-----------------------------------------------------Cefsulodin
61 (26)
Gentamicin
102 (43)
Carbenicillin
113 (48)