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Tube Feeding Site Infection

What is Tube feeding site infection?

A tube feeding site infection (also called a gastrostomy‑tube (G‑tube) infection or enteral‑tube infection) is an infection that develops around the skin and soft tissue surrounding a feeding tube that enters the stomach or intestine. The tube may be placed surgically (PEG – percutaneous endoscopic gastrostomy), radiologically, or surgically via a jejunostomy (J‑tube). Because the tube creates a permanent or semi‑permanent opening in the skin, bacteria from the skin, mouth, or gastrointestinal tract can enter the tract, leading to localized inflammation, cellulitis, or, in severe cases, deeper tissue infection.

Most infections are mild and respond to topical care and oral antibiotics, but if left untreated they can spread to the bloodstream (sepsis), cause abscess formation, or compromise nutrition delivery.

Common Causes

Several factors increase the risk of a tube feeding site infection. The most common causes include:

• Improper hand hygiene before handling the tube or dressing.
• Contamination of feeding equipment (tubes, syringes, extension sets).
• Skin breakdown around the stoma due to moisture, friction, or pressure.
• Underlying chronic illnesses such as diabetes, COPD, or cancer that impair immune response.
• Frequent manipulations of the tube for medication administration or flushing.
• Inadequate Securement – loose or tight dressings that cause micro‑trauma.
• Colonization with resistant organisms (e.g., MRSA, Pseudomonas).
• Obesity or excess abdominal skin folds that trap moisture.
• Recent antibiotics that disrupt normal skin flora and promote overgrowth of pathogenic bacteria.
• Severe malnutrition which impairs wound healing.

Associated Symptoms

When a tube feeding site becomes infected, patients often notice one or more of the following:

• Redness (erythema) that spreads beyond the immediate stoma.
• Swelling or induration (hardening) of the tissue.
• Pain, tenderness, or a burning sensation at the site.
• Warmth to the touch compared with surrounding skin.
• Purulent or foul‑smelling discharge (may be clear, yellow, green, or pus‑filled).
• Fever, chills, or general feeling of malaise.
• Increased drainage that soaks the dressing quickly.
• Leakage of gastric contents around the tube (known as “tube feed spill”).
• Systemic signs such as rapid heart rate or low blood pressure if infection spreads.

When to See a Doctor

Prompt medical evaluation is essential to prevent complications. Contact your health‑care provider (or go to urgent care) if you notice any of the following:

• Fever ≥ 38°C (100.4°F) or chills.
• Rapid increase in redness, swelling, or pain that spreads beyond the tube site.
• Drainage that becomes thick, pus‑filled, or has a foul odor.
• Bleeding that does not stop with gentle pressure.
• Difficulty flushing or using the tube because of blockage or pain.
• Signs of dehydration (dry mouth, decreased urine output) because of reduced feeding.
• Any sudden change in mental status, confusion, or lethargy – possible sepsis.

Diagnosis

Health‑care professionals use a combination of clinical assessment and tests to confirm a tube feeding site infection:

Physical Examination

• Inspection of the stoma for erythema, edema, discharge, and ulceration.
• Palpation to assess warmth, tenderness, and fluctuance (suggestive of an abscess).

Laboratory Tests

• Complete blood count (CBC) – elevated white blood cells indicate infection.
• C‑reactive protein (CRP) or ESR – markers of inflammation.
• Culture of the wound exudate – guides antibiotic selection, especially for resistant organisms.
• If systemic infection is suspected: blood cultures and metabolic panel.

Imaging (when needed)

• Ultrasound – helps detect fluid collections or abscesses under the skin.
• CT scan – used for deeper infections or when intra‑abdominal involvement is suspected.

Treatment Options

Treatment is tailored to the severity of the infection, the organism involved, and the patient’s overall health.

1. Local Care

• Cleaning: Gently cleanse the area with sterile saline or a mild antiseptic (e.g., chlorhexidine) at least once daily.
• Dressings: Use sterile, non‑adherent dressings. Hydrocolloid or foam dressings can absorb exudate and protect the skin.
• Securement: Ensure the tube is well‑secured but not overly tight; use commercial securement devices when possible.
• Barrier creams: Apply zinc oxide or silicone‑based barrier ointments to protect surrounding skin from moisture.

2. Systemic Antibiotics

• Empiric oral antibiotics (e.g., amoxicillin‑clavulanate, cephalexin) are often started while awaiting culture results.
• If MRSA is suspected, add trimethoprim‑sulfamethoxazole or clindamycin.
• Severe infections may require intravenous antibiotics such as cefazolin, vancomycin, or piperacillin‑tazobactam.
• Duration: typically 7‑14 days, depending on clinical response.

3. Drainage of Abscesses

• Small, superficial collections may resolve with pressure and dressings.
• Larger or fluctuating abscesses often need percutaneous drainage or, rarely, surgical incision and drainage.

4. Tube Management

• In mild infections, the tube can remain in place with careful monitoring.
• If infection recurs or the tube is the source, the tube may need to be removed, the tract allowed to close, and a new tube placed at a different site after the infection resolves.

5. Supportive Care

• Maintain adequate hydration and nutrition (consider temporary parenteral nutrition if feeding is compromised).
• Pain control with acetaminophen or NSAIDs unless contraindicated.
• Optimise blood glucose control in diabetics, as hyperglycemia impairs healing.

Prevention Tips

Most tube feeding site infections are preventable with diligent care. Follow these evidence‑based strategies:

• Hand hygiene: Wash hands with soap and water or use an alcohol‑based rub before and after touching the tube or dressing.
• Use aseptic technique: Clean the site with sterile saline, avoid tapping or “flicking” the tube.
• Regular dressing changes: Change dressings every 2‑3 days or sooner if soiled, using sterile technique.
• Skin inspection: Perform a visual check at least once daily for redness, swelling, or moisture.
• Maintain dryness: Keep the area dry; use barrier creams or absorbent pads for patients who sweat heavily.
• Securement devices: Use commercially‑approved stabilizers to reduce tugging and micro‑trauma.
• Educate caregivers: Provide written instructions and hands‑on training for family members or home‑health aides.
• Nutrition and hydration: Ensure adequate protein intake to support wound healing.
• Vaccinations: Keep influenza and pneumococcal vaccines up to date; infections elsewhere can predispose to local site infection.
• Regular follow‑up: Schedule routine visits with the tube‑placement team (usually every 1–3 months) for assessment.

Emergency Warning Signs

If any of the following occur, seek emergency medical care (call 911 or go to the nearest emergency department) immediately:

• High fever ≥ 39.4°C (103 °F) or a rapid rise in temperature with shaking chills.
• Severe pain that is sudden, worsening, or not relieved by analgesics.
• Rapid swelling that involves the abdomen, groin, or thighs.
• Signs of sepsis: rapid heart rate (> 100 bpm), low blood pressure, confusion, or difficulty breathing.
• Profuse bleeding that does not stop after 15 minutes of firm pressure.
• Visible gas or foul‑smelling gas under the skin (crepitus) – possible necrotizing infection.
• Sudden inability to use the feeding tube despite attempts to flush, indicating a possible blockage or tube rupture.

Key Take‑aways

Tube feeding site infections are common but usually manageable with prompt attention. Understanding the causes, recognizing early symptoms, and following strict hygiene and skin‑care practices dramatically lower risk. When in doubt, contact your health‑care team—early intervention prevents complications like sepsis, abscess formation, and interruption of essential nutrition.

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Sources: Mayo Clinic. “Gastrostomy tube complications.”; CDC. “Guideline for the Prevention of Surgical Site Infection.”; NIH National Institute of Diabetes and Digestive and Kidney Diseases. “Enteral Nutrition”.; Cleveland Clinic. “G‑tube care”.; WHO. “Infection prevention and control guidelines.”

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