Intraoperative pyloric botulinum toxin injection during Ivor-Lewis gastroesophagectomy to prevent delayed gastric emptying.
J C Tham, M Nixon, A V Ariyarathenam...
https://pubmed.ncbi.nlm.nih.gov/30561584/Actively Recruiting
Led by The Cleveland Clinic · Updated on 2026-02-25
170
Participants Needed
1
Research Sites
21 weeks
Total Duration
Researchers are evaluating two methods to help drain the stomach during esophagectomy surgery in patients with benign or malignant esophageal diseases. The study compares the use of intrapyloric botulinum toxin Botox injection versus pyloromyotomy to see if Botox is not worse than pyloromyotomy in preventing delayed gastric emptying symptoms six months after surgery. This trial is a randomized, pragmatic, registry-based clinical study conducted at a single institution. Participants will be randomly assigned during surgery to receive either the Botox injection or pyloromyotomy. For Botox, 100 units dissolved in saline are injected into four areas of the pyloric muscle. For pyloromyotomy, a surgical incision is made in the pyloric muscle to allow better emptying. Both procedures occur after the pylorus is identified during esophagectomy. The study includes two treatment arms with equal allocation. Participants will complete surveys assessing digestive symptoms at 3 months, 6 months, 1 year, and 2 years after surgery. A gastric emptying scan will be performed at 6 months to measure stomach emptying. Researchers will monitor symptoms using the Gastroparesis Cardinal Symptom Index GCSI and other questionnaires, track complications within 30 days, and record any pyloric reinterventions up to 24 months. The study aims to follow patients long term to assess outcomes and safety.
CONDITIONS
Effectiveness of Methods for Pyloric Drainage in esophagecTomY: Botox vs. Pyloromyotomy
A
Andrew Conner, MD
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The Cleveland Clinic
Lead Sponsor
This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
| Factors | Botox Injection | Pyloromyotomy |
|---|---|---|
| What it is | Injection of Botulinum Toxin A directly into the pyloric muscle during the esophagectomy to relax the pylorus and promote gastric emptying. | A surgical procedure involving incision and division of the pyloric muscle during esophagectomy to facilitate gastric emptying. |
| Role in trial | Investigational arm evaluating whether intraoperative Botox can provide effective pyloric drainage in esophagectomy patients. | Active comparator arm, treated with standard pyloromyotomy for pyloric drainage after esophagectomy. |
| Primary clinical use | Prevention of delayed gastric emptying by temporarily relaxing the pylorus after esophagectomy. | Prevention of delayed gastric emptying after esophagectomy by surgically disrupting pyloric muscle resistance. |
| How it is performed | 100 units of Botulinum Toxin A are dissolved in saline and injected into the anterior pyloric ring in multiple locations during surgery. | A 2-cm incision is made in the pyloric muscle, extending through the serosa and muscular layer while the mucosa is preserved; performed during esophagectomy. |
| Evidence status | Small prospective studies and systematic reviews have evaluated intraoperative Botox injection; evidence is mixed, with some studies suggesting similar outcomes to surgical drainage but others noting possible increased need for repeat intervention. | Pyloromyotomy is an established surgical technique, with randomized trials and meta-analyses showing it reduces delayed gastric emptying after esophagectomy, but it may be associated with its own surgical risks. |
| Important limitations | Botox-induced relaxation is temporary and may lead to recurrence of gastric outlet symptoms as effects wear off. There is also variability in reported efficacy and some studies note a need for additional late interventions. | Being a surgical procedure, pyloromyotomy may add operative complexity, risk of mucosal perforation, and other rare complications. Long-term functional outcomes and comparison to less invasive approaches continue to be studied. |
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
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Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - Up to 30 days post-operatively or until discharge from the index hospitalization, whichever is longer
Participants undergo esophagectomy with either intrapyloric Botox injection or pyloromyotomy during surgery. Immediate post-operative care follows the surgery.
1 surgical procedure and inpatient post-operative care
Duration - Up to 24 months post-operatively
Participants are monitored with follow-up visits and assessments including symptom questionnaires and gastric emptying studies to evaluate recovery and treatment effectiveness.
Follow-up visits at 6 months and additional visits as needed up to 24 months
Study Type
INTERVENTIONAL
Masking
DOUBLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
PREVENTION
Number of Arms
2
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Lead Sponsor