Pseudomonas Infection in G-Tubes: Treatment Protocol & Care Guide

Managing Pseudomonas aeruginosa in Gastrostomy Tubes

Pseudomonas is a Gram-negative opportunist that thrives in moist environments. G-tube infections require combined antimicrobial and mechanical strategies.

1. Antibiotic Therapy

• Oral (mild–moderate): Ciprofloxacin 500–750 mg BID or levofloxacin 750 mg daily × 7–14 days. Check renal function.
• IV (severe, bacteremia, failure): Ceftazidime, meropenem, piperacillin-tazobactam, or cefepime. Tailor to sensitivities.
• Duration: Typically 10–14 days; extend if deep tissue involvement.

2. G-Tube Site & Luminal Care

• Daily cleaning with sterile saline or prescribed antiseptic (chlorhexidine 0.05%, povidone-iodine).
• Rotate tube gently to prevent adherence; check balloon volume weekly.
• Flush with 30–60 mL water before/after feeds & meds.
• Replace tube per schedule (usually 3–6 months) or sooner if colonized.

3. Peristomal Wound Care (if cellulitis)

• Debride necrotic tissue; culture wound separately.
• Antimicrobial dressings (silver, PHMB, honey) + systemic antibiotics.

4. Adjunctive Measures

• Probiotics (Saccharomyces boulardii, Lactobacillus): May reduce GI colonization; evidence modest.
• Nutrition optimization: Adequate protein, zinc, vitamin C for healing.
• Glycemic control: Hyperglycemia impairs neutrophil function.

5. Monitoring & Escalation

• Repeat cultures at 48–72 hrs to confirm clearance.
• Watch for sepsis signs: fever, hypotension, altered mental status.
• ID consult if multidrug-resistant (MDR) isolate.

Coordinate with home-care nursing, GI team, and infectious disease as needed.