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Endolumenal Partial Myotomy for Esophageal Motility Disorders

The recruitment status of this study is unknown. The completion date has passed and the status has not been verified in more than two years.
Verified November 2010 by The Oregon Clinic.
Recruitment status was:  Recruiting
Information provided by:
The Oregon Clinic Identifier:
First received: February 23, 2011
Last updated: February 25, 2011
Last verified: November 2010
Achalasia and esophageal spasm are primary esophageal motility disorders where the lower esophageal sphincter fails to relax in response to swallowing with no well understood underlying cause. Surgical myotomy represents an appropriate therapeutic option. The purpose of this study is to evaluate flexible endoscopic myotomy a novel therapeutic approach to overcome the need for invasive surgery.

Condition Intervention Phase
Esophageal Motility Disorders
Procedure: Per oral endolumenal myotomy
Phase 2

Study Type: Interventional
Study Design: Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: Endoscopic Submucosal Tunnel Dissection for Endolumenal Partial Myotomy of the Lower Esophageal Sphincter for Atypical Primary Motility Disorders Such as Achalasia and Esophageal Spasm

Resource links provided by NLM:

Further study details as provided by The Oregon Clinic:

Primary Outcome Measures:
  • Esophageal Function Tests [ Time Frame: 6 month ]
    upper endoscopy, barium swallow, esophageal manometry,ph Test

Secondary Outcome Measures:
  • Quality of life score [ Time Frame: 6 months ]
    quality of life questionaire

Estimated Enrollment: 20
Study Start Date: January 2011
Estimated Primary Completion Date: November 2011 (Final data collection date for primary outcome measure)
Intervention Details:
    Procedure: Per oral endolumenal myotomy
    flexible endoscopic submucosal esophageal partial myotomy
Detailed Description:

In this study, the investigators propose the use of a recent endolumenal technique for partial myotomy in patients suffering from primary esophageal motility disorders.

Under general anesthesia patients will have upper endoscopy. Submucosal injection and mucosal incision is created for entry into the submucosal space. A submucosal tunnel is then created using a needle knife or blunt dissection as appropriate. Dissection will continue distally beyond the lower esophageal sphincter. The inner circular muscle fibers will then be divided to achieve an adequate myotomy length. The mucosal entry is then closed appropriately.

Results will be compared to historical data of conventional Heller myotomies.


Ages Eligible for Study:   18 Years to 85 Years   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Candidate for elective Heller myotomy
  • Ability to undergo general anesthesia
  • Ability to give informed consent

Exclusion Criteria:

  • Previous mediastinal or esophageal surgery
  • Contraindications for EGD
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT01302301

Contact: Lee L Swanstrom, MD 503 281 0561

United States, Oregon
Providence Portland Medical Center Recruiting
Portland, Oregon, United States, 97213
Contact: Lee L Swanstrom, MD    503-281-0561   
Sub-Investigator: Christy M Dunst, MD         
Sub-Investigator: Erwin Rieder, MD         
Sub-Investigator: Angi Gill, RN         
Sponsors and Collaborators
The Oregon Clinic
  More Information

Responsible Party: Lee L. Swanstrom, MD, The Oregon Clinic Identifier: NCT01302301     History of Changes
Other Study ID Numbers: PROV10-117A
Study First Received: February 23, 2011
Last Updated: February 25, 2011

Keywords provided by The Oregon Clinic:
endolumenal myotomy, per oral endoscopic myotomy

Additional relevant MeSH terms:
Esophageal Motility Disorders
Esophageal Spasm, Diffuse
Pathologic Processes
Deglutition Disorders
Esophageal Diseases
Gastrointestinal Diseases
Digestive System Diseases processed this record on April 26, 2017