Hidden Danger: How a PEG Tube Can Cause Gastric Ulcers
"A Case Study and What You Need to Know About Percutaneous Endoscopic Gastrostomy"
Percutaneous endoscopic gastrostomy (PEG) tubes are commonly used to provide nutrition for patients who have difficulty swallowing or eating. While generally safe, complications can occur. A recent case study highlights a rare but important complication: gastric ulcers hidden beneath the internal PEG bumper.
An 83-year-old male with Alzheimer's disease was admitted to a hospital with melena (dark, tarry stools indicating internal bleeding). He had a PEG tube placed three weeks prior due to aspiration pneumonia and wasn't taking gastrotoxic medications. His hematocrit level was low, indicating blood loss.
An esophagogastroduodenoscopy (EGD) was performed, revealing no active bleeding but a hyperemic (inflamed) area near the internal PEG bumper. Further investigation revealed a gastric ulcer with a visible vessel underneath the bumper, which was treated with endoscopic injection therapy and proton pump inhibitors.
A Common Procedure With Measurable Risks
Percutaneous endoscopic gastrostomy (PEG) is a minimally invasive alternative to surgery for patients requiring long-term enteral feeding, and it is especially common in neurological disease, post-cancer dysphagia, and intensive care patients. Although it has lower complication rates than surgical gastrostomy, it still carries risks such as infection, bleeding, and fistula formation. Wound infections are a concrete measure of that risk: in a retrospective review of 297 medical records of patients receiving prophylactic cefazolin before PEG placement, wound infection occurred in 36 patients (12.1%). The same evidence found that species isolated from the oral cavity, the stomach, and later the gastrostomy tube were identical in most cases, underscoring an infection pathway tied directly to the tube.
Standard Placement and Its Trade-Offs
Standard practice places a PEG tube directly through the abdominal wall into the stomach without open surgery, guided by endoscopy, which makes it a routine and widely accepted method for patients who cannot eat by mouth. Underlying this acceptance is the general assumption that the procedure is low-risk compared with alternatives. However, the conventional approach has known limitations: it depends on correct placement and secure positioning, and any lasting tube carries the potential for gradual tissue injury at the stomach wall. These structural trade-offs are part of why complications such as ulceration receive so much attention in the clinical discussion of long-term enteral feeding.
A Procedure Rooted in 1980
Percutaneous endoscopic gastrostomy was first described in 1980 by Gauderer et al., and its placement has since become an indispensable, routine procedure for providing enteral nutrition. The frequency of PEG tube placement has increased over the years based on Medicare claims data, and it is projected to increase further given the growing elderly population. From the start, however, the procedure brought a catalogue of documented complications, including haemorrhage, peritonitis, peristomal infection, necrotising fasciitis, tumour seeding, ileus, stomal leakage, buried bumper, gastric ulcer, fistulous tracts, and inadvertent removal. These problems may occur during placement, in the immediate postoperative period, or at any time the tube is in place, and while such complications are usually minor they are not uncommon, with minor complication rates reported to range from 13% upward.
The Hidden Threat: How PEG Tubes Cause Gastric Ulcers
Gastric ulcers after PEG tube placement can arise from various factors. One potential cause is the pressure exerted by the internal PEG bumper on the stomach lining. This pressure can lead to mucosal ischemia (reduced blood flow) and subsequent ulcer formation.
- Puncture of a blood vessel during the procedure.
- Traumatic erosions of the esophageal or gastric mucosa.
- Reflux esophagitis.
- Gastric ulcer.
Where the Evidence Is Heading
No specific recent studies or reviews were identified for this subsection, so the description below is necessarily general. Contemporary research into PEG-related gastric ulcers relies heavily on retrospective chart reviews, case series, and complication registries, since prospective trials in feeding-tube patients are difficult to conduct. Much of this literature focuses on the timing and mechanism of late complications, particularly erosion of the gastric mucosa by the tube's internal fixation device. Because much of the evidence is single-center and observational, findings on exact ulcer incidence vary and should be read as provisional rather than definitive.
Documented Failure Modes of PEG
A candid look at PEG outcomes shows the technique is not without well-documented failure modes. Placement, whatever its variant, includes a blind component, and among the several described techniques the 'pull' technique (Ponsky-Gardener) is the most popular. Although complications are usually classified as minor or major, the major category is substantial: buried bumper syndrome, bleeding, tube dislodgement, gastric erosions and ulcers, pneumoperitoneum/peritonitis, necrotising fasciitis, colonic injury, liver injury, and PEG tract tumour seeding. Gastric erosions and ulcers are explicitly listed among these major post-procedural complications, which runs against any assumption that a feeding tube is inherently harmless.
PEG Versus the Alternatives
No comparative source material was available for this subsection, so the comparison offered here is purposefully general. PEG tubes are typically favored over nasogastric tubes for long-term enteral feeding because they bypass the nose and throat and are less prone to everyday dislodgement, while remaining less invasive than surgical gastrostomy. The trade-off is that the tube dwells permanently inside the stomach, so continued contact between the internal fixation device and the gastric wall can cause erosion over time. A fuller point-by-point comparison would require procedure-specific complication data that were not reviewed for the sections above.
Prevention and Management: Protecting Patients with PEG Tubes
This case study offers several important lessons for preventing and managing gastric ulcers associated with PEG tubes:
Ulceration as an Expected Risk
No expert commentary specific to this topic was available, so the synthesis below is a general reading of the surrounding evidence. Across the sources that were reviewed, PEG is widely regarded as a valuable, minimally invasive solution for long-term enteral feeding, but the same literature consistently warns against treating it as risk-free. The unifying theme is that complications such as gastric ulcers arise from the combination of procedure-related factors and the long-term presence of the tube against the gastric wall. The practical implication is that prevention, in the form of careful technique, correct positioning, and follow-up surveillance, should be treated as part of routine care rather than an afterthought.
Where PEG Care May Go Next
Without specific forward-looking sources, the outlook below is intentionally general. Likely directions of change include refinements in placement technique, new tube and bumper designs intended to reduce pressure on the gastric wall, and more standardized follow-up protocols for detecting early mucosal injury. Growth in the elderly population is widely expected to keep driving demand for enteral feeding, which would make such improvements increasingly relevant. How quickly any of this materializes will depend on future clinical research and device development.
Systemic Obstacles to Safer PEG Care
At a systemic level, several broad challenges surround PEG-related care even though no published figures were reviewed for this subsection. Complication rates may vary widely across institutions because placement technique, operator experience, and follow-up practices differ. Under-reporting and variable coding of complications such as gastric ulcers can make the true burden difficult to measure, complicating quality-improvement efforts. Since many PEG patients are elderly or chronically ill, any ulcer complication also interacts with broader questions of nutrition management and healthcare resource use.
What Ulcers Mean for Patients and Families
The human dimension of PEG-related ulcers is significant even without specific patient accounts in the reviewed sources. A feeding tube is typically a long-term, everyday part of a patient's life, so any complication like a gastric ulcer translates into additional pain, clinic visits, procedures, and interrupted feeding. For caregivers and families, the worry is not only the ulcer itself but the sense that a supposedly routine device has become a source of harm. These experiences underline why prevention and prompt recognition of ulcer risks matter at the bedside, not just in the clinical literature.
Loosening a tight internal PEG bumper and keeping it away from the gastric mucosa for several weeks can promote ulcer healing. Additionally, when initially placing the PEG tube, avoid excessive pressure on the stomach lining to minimize the risk of ulcer development.
By remaining vigilant and implementing these strategies, healthcare providers can minimize the risk of gastric ulcers and ensure the safety and well-being of patients receiving PEG tube feeding.