Hospital-acquired Gram-Negative Bacteria

Pseudomonas aeruginosa
The most problematic. Only infects weakened humans, and is very resistant.

• Diseases (BEPSEUDO):
• Burn-wound infections.
• Endocarditis.
• Pneumonia by air contamination.
• Sepsis from infected catheters or from other sites of infection. 
• External malignant otitis from an external ear canal infection. 
• Urinary tract infection. 
• (Diabetic) Osteomyelitis by wound infection, especially in diabetics who develop foot ulcers. 
• Corneal infections in contact lens wearers. 

Burkholderia cepacia
Transmitted to patients from water and drug resistant.

Stenotrophomonas maltophilia
Aerobic, part of normal respiratory flora, but can cause disease in immunocompromised patient.

Acinetobacter
Aerobic, causes a wide range of infections.