Percutaneous endoscopic gastrostomy

Percutaneous endoscopic gastrostomy
Intervention

Percutaneous endoscopic gastrostomy
ICD-9-CM 43.11
OPS-301 code sec

Percutaneous endoscopic gastrostomy (PEG) is an endoscopic medical procedure in which a tube (PEG tube) is passed into a patient's stomach through the abdominal wall, most commonly to provide a means of feeding when oral intake is not adequate (for example, because of dysphagia or sedation). This provides enteral nutrition (making use of the natural digestion process of the gastrointestinal tract) despite bypassing the mouth; enteral nutrition is generally preferable to parenteral nutrition (which is only used when the GI tract must be avoided). The PEG procedure is an alternative to open surgical gastrostomy insertion, and does not require a general anesthetic; mild sedation is typically used. PEG tubes may also be extended into the small intestine by passing a jejunal extension tube (PEG-J tube) through the PEG tube and into the jejunum via the pylorus.[1]

PEG administration of enteral feeds is the most commonly used method of nutritional support for patients in the community. Many stroke patients, for example, are at risk of aspiration pneumonia due to poor control over the swallowing muscles; some will benefit from a PEG performed to maintain nutrition. PEGs may also be inserted to decompress the stomach in cases of gastric volvulus.[2]

Indications

Gastrostomy may be indicated in numerous situations, usually those in which normal or nutrition (or nasogastric) feeding is impossible. The causes for these situations may be neurological (e.g. stroke), anatomical (e.g. cleft lip and palate during the process of correction) or other (e.g. radiation therapy for tumors in head & neck region).

In certain situations where normal or nasogastric feeding is not possible, gastrostomy may be of no clinical benefit. In advanced dementia, studies show that PEG placement does not in fact prolong life.[3] Instead, oral assisted feedings are preferable.[4] Quality improvement protocols have been developed with the aim of reducing the number of non-beneficial gastrostomies in patients with dementia.[5]

A gastrostomy can be placed to decompress the stomach contents in a patient with a malignant bowel obstruction. This is referred to as a "venting PEG" and is placed to prevent and manage nausea and vomiting.

A gastrostomy can also be used to treat volvulus of the stomach, where the stomach twists along one of its axes. The tube (or multiple tubes) is used for gastropexy, or adhering the stomach to the abdominal wall, preventing twisting of the stomach.[2]

A PEG tube can be used in providing gastric or post-surgical drainage.[6]

Techniques

PEG tube, cannula and guidewire (Pull Technique)

Two major techniques for placing PEGs have been described in the literature.

The Gauderer-Ponsky technique involves performing a gastroscopy to evaluate the anatomy of the stomach. The anterior stomach wall is identified and techniques are used to ensure that there is no organ between the wall and the skin:

An angiocath is used to puncture the abdominal wall through a small incision, and a soft guidewire is inserted through this and pulled out of the mouth. The feeding tube is attached to the guidewire and pulled through the mouth, esophagus, stomach, and out of the incision.[2]

In the Russell introducer technique, the Seldinger technique is used to place a wire into the stomach, and a series of dilators are used to increase the size of the gastrostomy. The tube is then pushed in over the wire.[7]

Contraindications

As with other types of feeding tubes, care must be made to place PEGs into an appropriate population. The following are contraindications to PEG use:[8]

Absolute contraindications

Relative contraindications

In advanced dementia

The American Medical Directors Association, the American Geriatrics Society and the American Academy of Hospice and Palliative Medicine recommend against inserting percutaneous feeding tubes in individuals with advanced dementia and, instead, recommend oral assisted feedings. Artificial nutrition neither prolongs life nor improves its quality in patients with advanced dementia. It may increase the risk of the patient inhaling food, it does not reduce suffering, it may cause fluid overload, diarrhea, abdominal pain and local complications, and can reduce the amount of human interaction the patient experiences.[9]

Complications

Removal of PEG tubes

Endoscopic removal of PEG tube

Indications

Techniques

PEG tubes with rigid, fixed "bumpers" are removed endoscopically. The PEG tube is pushed into the stomach so that part of the tube is visible behind the bumper. An endoscopy snare is then passed through the endoscope, and passed over the bumper so that the tube adjacent to the bumper is grasped. The external part of the tube is then cut, and the tube is withdrawn into the stomach, and then pulled up into the esophagus and removed through the mouth. The PEG site heals without intervention.

PEG tubes with a collapsible or deflatable bumper can be removed using traction (simply by pulling the PEG tube out through the abdominal wall).

History

The first percutaneous endoscopic gastrostomy performed on a child was on June 12, 1979 at the Rainbow Babies & Children's Hospital, University Hospitals of Cleveland. Dr. Michael W.L. Gauderer, pediatric surgeon, Dr. Jeffrey Ponsky, endoscopist, and Dr. James Bekeny, surgical resident, performed the procedure on a 4 1⁄2-month-old child with inadequate oral intake.[12] The authors of the technique, Dr. Michael W.L. Gauderer and Dr. Jeffrey Ponsky, first published the technique in 1980.[12] In 2001, the details of the development of the procedure were published, the first author being the originator of the technique itself.[2]

See also

References

  1. ↑ "Discussion". BCM Gastroenterology Grand Rounds. Baylor College of Medicine.
  2. 1 2 3 4 Gauderer MW (2001). "Percutaneous endoscopic gastrostomy-20 years later: a historical perspective". J. Pediatr. Surg. 36 (1): 217–9. doi:10.1053/jpsu.2001.20058. PMID 11150469.
  3. ↑ Murphy LM, Lipman TO (2003). "Percutaneous endoscopic gastrostomy does not prolong survival in patients with dementia". Arch. Intern. Med. 163 (11): 1351–3. doi:10.1001/archinte.163.11.1351. PMID 12796072.
  4. ↑ AMDA – The Society for Post-Acute and Long-Term Care Medicine (February 2014), "Ten Things Physicians and Patients Should Question", Choosing Wisely: an initiative of the ABIM Foundation (AMDA – The Society for Post-Acute and Long-Term Care Medicine), retrieved 20 April 2015.
  5. ↑ Monteleoni C, Clark E (2004). "Using rapid-cycle quality improvement methodology to reduce feeding tubes in patients with advanced dementia: before and after study". BMJ 329 (7464): 491–4. doi:10.1136/bmj.329.7464.491. PMC 515202. PMID 15331474.
  6. ↑ Gail Waldby, "PEG-J Gastrostomy drainage jejunal feeding tubes" http://surgnurseslinks.com/caluso.htm
  7. ↑ Deitel M, Bendago M, Spratt EH, Burul CJ, To TB (1988). "Percutaneous endoscopic gastrostomy by the "pull" and "introducer" methods". Can J Surg 31 (2): 102–4. PMID 3349370.
  8. ↑ Gastroenterological endoscopy. Meinhard Classen, G. N. J. Tytgat, Charles J. Lightdale. 2002. ISBN 978-1-58890-013-5
  9. ↑ Lay summary: "Feeding tubes for people with Alzheimer’s disease: When you need them — and when you don’t" (PDF). Consumer Reports. Retrieved 6 December 2013.
  10. ↑ Siamak Milanchi and Matthew T Wilson (January–March 2008). "Malposition of percutaneous endoscopic-guided gastrostomy: Guideline and management". J Minim Access Surg. 4 (1): 1–4. doi:10.4103/0972-9941.40989. PMC 2699054. PMID 19547728.
  11. ↑ Walters G, Ramesh P, Memon MI (2005). "Buried Bumper Syndrome complicated by intra-abdominal sepsis". Age and ageing 34 (6): 650–1. doi:10.1093/ageing/afi204. PMID 16267197.
  12. 1 2 Gauderer MW, Ponsky JL, Izant RJ (1980). "Gastrostomy without laparotomy: a percutaneous endoscopic technique". J. Pediatr. Surg. 15 (6): 872–5. doi:10.1016/S0022-3468(80)80296-X. PMID 6780678.

External links

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