Percutaneous Endoscopic Gastrostomy (PEG)

What Is PEG

Percutaneous Endoscopic Gastrostomy (PEG) is a procedure in which a flexible feeding tube is placed directly through the abdominal wall into the stomach using endoscopic guidance. The tube creates a permanent access point for delivering nutrition, fluids, and medications directly into the stomach, bypassing the mouth and esophagus entirely. PEG is the preferred method for long-term enteral feeding (more than 4 weeks) in patients who cannot swallow safely or adequately. The procedure is minimally invasive, typically takes 15 to 30 minutes, and avoids the discomfort and complications associated with long-term nasogastric tubes.

Who Needs PEG

PEG is recommended for patients who have a functioning gastrointestinal tract but cannot maintain adequate oral nutrition due to various conditions:

• Esophageal cancer: Tumors that obstruct the esophagus may prevent swallowing. PEG provides nutritional support during and after cancer treatment (chemotherapy, radiation).
• Neurological conditions:
  • Stroke: Dysphagia (swallowing difficulty) is one of the most common complications of stroke. When recovery of swallowing function is not expected within 4 weeks, PEG is indicated.
  • Amyotrophic lateral sclerosis (ALS): Progressive bulbar weakness leads to unsafe swallowing. Early PEG placement is recommended while respiratory function is still adequate.
  • Advanced dementia: Severe cognitive decline may lead to loss of the ability to feed independently, though the decision to place PEG in dementia requires careful ethical consideration and family discussion.
  • Parkinson's disease: Advanced-stage patients may develop significant dysphagia requiring enteral access.
• Head and neck cancer: Tumors of the oropharynx, larynx, or hypopharynx — and their treatments — frequently impair swallowing. PEG is often placed prophylactically before radiation therapy begins.
• Prolonged ICU stay: Critically ill patients requiring mechanical ventilation for extended periods benefit from PEG over prolonged nasogastric feeding.
• Other conditions: Severe facial trauma, congenital anomalies in children, and chronic conditions that impair nutrition may also necessitate PEG.

How PEG Insertion Works

1. Preparation: The patient fasts for at least 8 hours. Blood tests confirm adequate coagulation. Prophylactic antibiotics are administered intravenously 30 minutes before the procedure to reduce the risk of wound infection.
2. Sedation: Moderate sedation or deep sedation is administered through an IV line. Local anesthesia is also applied to the skin of the abdomen at the insertion site.
3. Endoscopy: A standard upper endoscope is inserted through the mouth into the stomach. The stomach is inflated with air so that the anterior wall comes into contact with the abdominal wall.
4. Transillumination: The endoscope light shines through the stomach and abdominal wall, allowing the physician to identify the optimal puncture site on the skin. This is confirmed by finger indentation visible on the endoscopic image.
5. Puncture: After cleaning and draping the skin, a needle is inserted through the abdominal wall into the stomach under endoscopic visualization. A guidewire is passed through the needle.
6. Tube placement (pull technique): The guidewire is grasped by the endoscope and pulled out through the mouth. The PEG tube is attached to the wire and pulled from the mouth, through the esophagus and stomach, and out through the abdominal wall. An internal bumper secures the tube inside the stomach, and an external bumper holds it against the skin.
7. Confirmation: Correct positioning is verified endoscopically. The tube is secured and dressed.

PEGJ Variant

Percutaneous Endoscopic Gastrojejunostomy (PEGJ) involves placing a longer tube that extends through the PEG site, past the stomach, and into the jejunum (small intestine). PEGJ is indicated for patients at high risk of aspiration — for example, those with severe gastroesophageal reflux or gastroparesis (delayed stomach emptying). By delivering nutrition directly into the small intestine, the risk of reflux and aspiration pneumonia is reduced. PEGJ tubes require more careful management and may be more prone to clogging or displacement.

Caring for PEG at Home

Cleaning the PEG Site

• Clean the skin around the tube daily using warm water and mild soap. Gently remove any crusting around the stoma.
• Pat the area dry thoroughly with a clean cloth. Moisture trapped under the external bumper can cause skin irritation or infection.
• Rotate the tube 360 degrees once daily to prevent the internal bumper from adhering to the gastric wall (buried bumper syndrome).
• Do not apply occlusive dressings unless specifically instructed — the stoma should be kept dry and exposed to air.

Feeding Schedule

• Feeding can be delivered as bolus feeds (using a syringe to deliver 200-400 mL of formula over 15-30 minutes, 4-6 times daily) or as continuous infusion (using a pump over several hours, often overnight).
• Always elevate the head of the bed to 30-45 degrees during feeding and for 30 minutes afterward to reduce the risk of aspiration.
• Flush the tube with 30-50 mL of warm water before and after each feed and before and after medication administration to prevent clogging.
• Use the formula prescribed by your dietitian. Do not pour blended food through the tube unless specifically approved — it may clog the tube.

Medication Through PEG

• Use liquid formulations of medications whenever possible.
• Tablets that can be crushed should be dissolved in warm water before administration. Never crush enteric-coated or sustained-release tablets.
• Administer medications one at a time, flushing with 10-20 mL of water between each medication.
• Consult your pharmacist about medication compatibility with tube feeding.

Troubleshooting

Tube Displacement

If the PEG tube falls out, cover the stoma with a clean dressing and seek medical attention within a few hours. The stoma can begin to close within 4 to 6 hours, so timely replacement is essential. Do not attempt to reinsert the tube yourself unless you have been trained to do so and have a replacement tube available.

Tube Blockage

Flush the tube with warm water using gentle pressure from a syringe. If the blockage persists, try a solution of warm water with a dissolved pancreatic enzyme tablet (as instructed by your healthcare team). Never use a wire or sharp object to clear the tube — this risks perforating the tube or the stomach wall.

Skin Irritation or Infection

Redness, swelling, pain, or discharge around the stoma may indicate infection. Clean the area gently, keep it dry, and contact your doctor. A course of antibiotics or topical treatment may be necessary. If granulation tissue (red, moist tissue) develops around the stoma, your doctor may treat it with silver nitrate application.

Leakage Around the Tube

Leakage of gastric contents around the stoma can cause skin breakdown. Ensure the external bumper is positioned snugly (but not too tightly) against the skin. A barrier cream (zinc oxide or dimethicone) can protect the surrounding skin. Report persistent leakage to your healthcare team.

When to Contact the Doctor

• Fever above 38 °C (100.4 °F)
• Increasing redness, warmth, swelling, or pus around the stoma
• The tube falls out and you cannot replace it
• Persistent abdominal pain, distension, or vomiting
• Blood in the tube or around the stoma
• Inability to flush or feed through the tube despite troubleshooting
• Signs of aspiration pneumonia: cough, fever, difficulty breathing during or after feeding

Practical Tips for Caregivers

• Keep a logbook of feeds — record the time, volume, formula type, water flushes, and any problems encountered. This helps your healthcare team adjust the feeding plan.
• Store formula as directed — opened containers should be refrigerated and used within 24 hours.
• Wash your hands thoroughly before handling the tube or preparing feeds.
• Attend training sessions offered by the hospital or home care team. Hands-on practice builds confidence.
• Create a daily routine for feeding, cleaning, and medication to make PEG care feel manageable.
• Carry a small emergency kit when traveling: spare syringe, water for flushing, dressing supplies, and contact information for your healthcare team.
• Remember that a PEG does not prevent the patient from enjoying the taste of food — if cleared by a speech therapist, small amounts of food by mouth may still be permitted for comfort and quality of life.