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Procedures & Surgery: Beyond Medication

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When medications fail to manage gastroparesis, procedures like G-POEM and gastric electrical stimulation (Enterra) offer relief. G-POEM permanently cuts the pylorus muscle to improve stomach drainage, while Enterra uses electrical pulses to reduce nausea and vomiting without speeding up digestion.

Key Takeaways

  • • G-POEM is a minimally invasive procedure that permanently relaxes the pylorus to improve stomach drainage.
  • • Gastric electrical stimulation (Enterra) helps reduce nausea and vomiting but usually does not speed up stomach emptying.
  • • Pyloroplasty is the surgical alternative to G-POEM and has similar success rates but may require a longer hospital stay.
  • • Botox injections offer only temporary relief and are often used as a trial before permanent procedures.
  • • Feeding tubes are a nutritional backup when patients cannot maintain weight or hydration orally.

When diet and medications aren’t enough to manage gastroparesis, several interventional procedures and surgeries may be considered. These treatments aim to either help the stomach drain more effectively or to directly reduce the most distressing symptoms like nausea and vomiting [1][2].

G-POEM: Opening the Gatekeeper

Gastric Peroral Endoscopic Myotomy (G-POEM) is a newer, minimally invasive procedure performed with an endoscope (a flexible camera) [3].

  • How it Works: The doctor uses the endoscope to make a small cut in the pylorus, the muscular valve at the bottom of the stomach. This permanently relaxes the “gatekeeper,” allowing food to drain into the small intestine more easily [3][1].
  • Success Rates: The long-term success of G-POEM is promising, with about 50% to 77.5% of patients reporting continued symptom relief three to four years after the procedure [3][4].
  • Permanent: It is important to know that G-POEM cuts the muscle permanently. It is not reversible.
  • Who it’s For: It is often best for patients whose symptoms are related to “pylorospasm” (a gatekeeper that won’t open) [1].

Gastric Electrical Stimulation (Enterra)

Gastric Electrical Stimulation (GES) involves surgically implanting a small device, similar to a heart pacemaker, that sends mild electrical pulses to the stomach muscles [2][5].

  • A Common Misconception: It is important to know that GES does not typically fix slow emptying. Most studies show that it does not significantly speed up how fast your stomach works [2][6][7].
  • How it Helps: Its primary goal is to reduce nausea and vomiting. It is thought to work by “confusing” the nerves that send nausea signals from the stomach to the brain [8][2].
  • Who it’s For: It is generally reserved for patients with severe, medicine-resistant nausea and vomiting [9].

Other Interventional Options

  • Pyloroplasty: This is the surgical version of G-POEM. Instead of using an endoscope, a surgeon makes an incision in the abdomen to widen the pylorus [1][10]. It has similar success rates to G-POEM but often requires a longer hospital stay [10][3].
  • Pyloric Botox: Doctors may inject Botulinum toxin (Botox) into the pylorus to temporarily relax the muscle [11][12]. While this can provide relief for some, the effect is often temporary (lasting only a few weeks or months), and its overall effectiveness is still debated in medical guidelines [13][14].
  • Feeding Tubes (J-Tubes): If you are unable to maintain your weight or stay hydrated through eating, a feeding tube may be placed into the small intestine (jejunum), bypassing the stomach entirely to provide necessary nutrition [15][16].

Deciding on a procedure is a significant step. Your medical team will look at your specific subtype of gastroparesis and your most bothersome symptoms to help you choose the path that offers the best chance for relief [1][17].

Frequently Asked Questions

What is the G-POEM procedure for gastroparesis?
G-POEM (Gastric Peroral Endoscopic Myotomy) is a minimally invasive procedure where a doctor uses an endoscope to cut the pylorus muscle. This permanently opens the valve at the bottom of the stomach to help food drain more easily into the small intestine.
Does a gastric pacemaker fix slow stomach emptying?
Gastric electrical stimulation, often called a gastric pacemaker, involves implanting a device that sends mild electrical pulses to the stomach. While it helps reduce nausea and vomiting by affecting nerve signals, it does not typically make the stomach empty faster.
How long does pyloric Botox last?
Botox injections into the pylorus provide temporary relief by relaxing the muscle, but the effects usually last only a few weeks or months. Doctors may use it as a trial to see if a permanent procedure like G-POEM might help.
What is the difference between G-POEM and pyloroplasty?
Both procedures widen the pylorus to help the stomach drain. G-POEM is done internally through the mouth using an endoscope, while pyloroplasty is a surgical procedure that requires an incision in the abdomen.
When is a feeding tube necessary for gastroparesis?
A feeding tube (J-tube) is considered when a patient cannot maintain their weight or stay hydrated through eating alone. It bypasses the stomach entirely to deliver nutrition directly into the small intestine.

Questions for Your Doctor

  • • Based on my symptom profile, would I benefit more from a procedure that targets my 'gatekeeper' (G-POEM) or one that targets my nausea signals (GES)?
  • • If I have G-POEM, what are the chances I will need a repeat procedure or a different intervention in three to five years?
  • • Is a trial of Pyloric Botox a good way to 'test' if G-POEM will work for me, or should we skip directly to the permanent procedure?
  • • Does the Gastric Electrical Stimulator (Enterra) help move food through my stomach faster, or is it only intended to reduce my nausea and vomiting?
  • • Am I a candidate for a laparoscopic pyloroplasty instead of the endoscopic G-POEM, and what are the pros and cons of each for my specific case?

Questions for You

  • • Is my primary goal to reduce my nausea and vomiting, or is it to be able to eat larger meals and feel less 'stuffed' all the time?
  • • Am I comfortable with the idea of having a permanent implanted device (like GES) or would I prefer a one-time endoscopic procedure (like G-POEM)?
  • • Have I had any previous surgeries on my stomach or esophagus that might make an endoscopic or surgical procedure more difficult?

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References

  1. 1

    Clinical efficacy of gastric per-oral endoscopic myotomy (G-POEM) in the treatment of refractory gastroparesis and predictors of outcomes: a systematic review and meta-analysis using surgical pyloroplasty as a comparator group.

    Mohan BP, Chandan S, Jha LK, et al.

    Surgical endoscopy 2020; (34(8)):3352-3367 doi:10.1007/s00464-019-07135-9.

    PMID: 31583465
  2. 2

    Gastric Electrical Stimulation: Role and Clinical Impact on Chronic Nausea and Vomiting.

    Soliman H, Gourcerol G

    Frontiers in neuroscience 2022; (16()):909149 doi:10.3389/fnins.2022.909149.

    PMID: 35620661
  3. 3

    Redefining the Treatment Landscape in Gastroparesis: A Clinical Review of Gastric Peroral Endoscopic Myotomy Outcomes and Therapeutic Integration.

    Essilfie-Quaye K, Creamer C, Abuassi M, et al.

    DEN open 2026; (6(1)):e70260 doi:10.1002/deo2.70260.

    PMID: 41378163
  4. 4

    Gastric peroral endoscopic myotomy in refractory gastroparesis: long-term outcomes and predictive score to improve patient selection.

    Labonde A, Lades G, Debourdeau A, et al.

    Gastrointestinal endoscopy 2022; (96(3)):500-508.e2 doi:10.1016/j.gie.2022.04.002.

    PMID: 35413333
  5. 5

    Gastric Electric Stimulation for Refractory Gastroparesis.

    Zoll B, Jehangir A, Malik Z, et al.

    Journal of clinical outcomes management : JCOM 2019; (26(1)):27-38.

    PMID: 31501641
  6. 6

    Gastric Electrical Stimulation for Treatment of Refractory Gastroparesis: the Current Approach to Management.

    Shanker A, Bashashati M, Rezaie A

    Current gastroenterology reports 2021; (23(2)):2 doi:10.1007/s11894-020-00803-0.

    PMID: 33483775
  7. 7

    Gastric Electrical Stimulation Reduces Refractory Vomiting in a Randomized Crossover Trial.

    Ducrotte P, Coffin B, Bonaz B, et al.

    Gastroenterology 2020; (158(3)):506-514.e2 doi:10.1053/j.gastro.2019.10.018.

    PMID: 31647902
  8. 8

    Gastric Electrical Stimulation for Gastroparesis and Chronic Unexplained Nausea and Vomiting.

    Wo JM, Nowak TV, Waseem S, Ward MP

    Current treatment options in gastroenterology 2016; (14(4)):386-400 doi:10.1007/s11938-016-0103-1.

    PMID: 27678506
  9. 9

    AGA Clinical Practice Guideline on Management of Gastroparesis.

    Staller K, Parkman HP, Greer KB, et al.

    Gastroenterology 2025; (169(5)):828-861 doi:10.1053/j.gastro.2025.08.004.

    PMID: 40976635
  10. 10

    Laparoscopic pyloroplasty versus endoscopic per-oral pyloromyotomy for the treatment of gastroparesis.

    Landreneau JP, Strong AT, El-Hayek K, et al.

    Surgical endoscopy 2019; (33(3)):773-781 doi:10.1007/s00464-018-6342-6.

    PMID: 30019220
  11. 11

    Autonomic function in gastroparesis and chronic unexplained nausea and vomiting: Relationship with etiology, gastric emptying, and symptom severity.

    Nguyen L, Wilson LA, Miriel L, et al.

    Neurogastroenterology and motility 2020; (32(8)):e13810 doi:10.1111/nmo.13810.

    PMID: 32061038
  12. 12

    Endoscopic treatment of gastroparesis.

    McCarty TR, Rustagi T

    World journal of gastroenterology 2015; (21(22)):6842-9 doi:10.3748/wjg.v21.i22.6842.

    PMID: 26078560
  13. 13

    Pyloric sphincter characteristics using EndoFLIP® in gastroparesis.

    Saadi M, Yu D, Malik Z, et al.

    Revista de gastroenterologia de Mexico (English) 2018; (83(4)):375-384 doi:10.1016/j.rgmx.2018.02.013.

    PMID: 29709494
  14. 14

    Response to botulinum toxin may predict response to peroral pyloromyotomy in patients with gastroparesis.

    Wadhwa V, Gonzalez A, Azar F, et al.

    Endoscopy 2023; (55(6)):508-514 doi:10.1055/a-1986-4292.

    PMID: 36417930
  15. 15

    Techniques and devices for the endoscopic treatment of gastroparesis (with video).

    Parsi MA, Jirapinyo P, Abu Dayyeh BK, et al.

    Gastrointestinal endoscopy 2020; (92(3)):483-491 doi:10.1016/j.gie.2020.03.3857.

    PMID: 32684298
  16. 16

    Therapeutic strategies in gastroparesis: Results of stepwise approach with diet and prokinetics, Gastric Rest, and PEG-J: A retrospective analysis.

    Strijbos D, Keszthelyi D, Smeets FGM, et al.

    Neurogastroenterology and motility 2019; (31(6)):e13588 doi:10.1111/nmo.13588.

    PMID: 30947400
  17. 17

    Prognostic value of preoperative intragastric meal distribution in gastric emptying scintigraphy for long-term success of gastric peroral endoscopic myotomy in gastroparesis.

    Debourdeau A, Vitton V, Gonzalez S, et al.

    Gastrointestinal endoscopy 2025; (101(3)):598-607 doi:10.1016/j.gie.2024.05.011.

    PMID: 38762040

This guide explains surgical options for gastroparesis for educational purposes. Consult your gastroenterologist or surgeon to determine the best approach for your specific condition.

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