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Pneumodilation Or Endoscopic Myotomy in Achalasia (POEMA) Trial.


- candidate number13268
- NTR NumberNTR3593
- ISRCTNISRCTN wordt niet meer aangevraagd.
- Date ISRCTN created
- date ISRCTN requested
- Date Registered NTR29-aug-2012
- Secondary IDsNL-40053.018.12 METC AMC
- Public TitlePneumodilation Or Endoscopic Myotomy in Achalasia (POEMA) Trial.
- Scientific TitlePneumodilation Or Endoscopic Myotomy in Achalasia (POEMA) Trial.
- ACRONYMPOEMA
- hypothesisThe aim of the study is to compare the efficacy of per-oral endoscopic myotomy (POEM) to the efficacy of pneumodilation as the initial treatment of symptomatic idiopathic achalasia. It is hypothesized that POEM has a higher long-term efficacy than pneumodilation in treatment of therapy-naive patients with idiopathic achalasia.
- Healt Condition(s) or Problem(s) studiedAchalasia, Pneumodilation, Per-Oral Endoscopic Myotomy (POEM)
- Inclusion criteria1. Presence of achalasia, as shown on oesophageal manometry;
2. Eckardt score > 3;
3. Age between 18-80 years;
4. Signed written informed consent;
5. ASA class I or II.
- Exclusion criteria1. Previous endoscopic or surgical treatment for achalasia, except botulinium toxin injections;
2. Previous surgery of the stomach or oesophagus;
3. Known coagulopathy;
4. Presence of liver cirrhosis and/or oesophageal varices;
5. Presence of eosinophilic oesophagitis;
6. Presence of Barrett’s oesophagus;
7. Pregnancy at time of treatment;
8. Presence of a stricture of the oesophagus;
9. Presence of malignant or premalignant oesophageal lesions;
10. Presence of an extremely dilated oesophageal body (>6cm).
- mec approval receivedyes
- multicenter trialyes
- randomisedyes
- masking/blindingNone
- controlActive
- groupParallel
- Type2 or more arms, randomized
- Studytypeintervention
- planned startdate 1-okt-2012
- planned closingdate1-okt-2017
- Target number of participants130
- InterventionsTherapy-naive patients with idiopathic achalasia will undergo per-oral endoscopic myotomy (POEM) or pneumodilation, depend on the randomization. The POEM will be performed in one procedure. For the pneumodilation participants will be dilated once or twice, depending on the symptoms that will be evaluated 3 weeks after the first pneumodilation. In case the Eckardt (symptom score for achalasia) is > 3 a second pneumodilation will be performed. If the Eckardt score is < 3 an additional high resolution manometry will be performed to see if a second dilation is necassary.

Before and after the procedure the following interventions will take place for baseline data and the follow-up:
1. Venous blood withdrawal;
2. Upper Endoscopy;
3. Timed barium oesophagography;
4. High Resolution Manometry (HRM);
5. pH-impedance monitoring;
6. Questionnaires (SF-36, Achalasia-DSQoL, GerdQ and Eckardt score).
- Primary outcomeThe primary outcome is treatment succes, defined as:
1. An Eckardt score of 3 or less;
2. The absence of the need for endoscopic or surgical retreatment in the period between the first treatment session (first and optional second dilation within first 3 months) and the endpoint;
3. The absence of severe complications associated with treatment.
- Secondary outcome1. Quality of life and achalasia-specific quality of life;
2. Stasis in the oesophagus, measured with a timed barium oesophagogram;
3. Presence of reflux symptoms, reflux oesophagitis and excessive oesophageal acid exposure;
4. Lower oesophageal sphincter pressure and integrative relaxation pressure (IRP4), as measured with high-resolution manometry;
5. Complications of the treatment, defined as any unwanted events that arise following treatment and/or that are secondary to the treatment. Complications are classified as “severe” when these result in admission > 24 hours or prolongation of an already planned admission of >24 hours, admission to a medium or intensive care unit, additional endoscopic procedures, or blood transfusion or death. Other complications are classified as “mild”;
6. The need for endoscopic or surgical retreatment after the initial treatment session.
- Timepoints1. Baseline:
A. Venous blood withdrawal;
B. Questionnaires (SF-36, achalasia-DSQoL, GerdQ and Eckardt);
C. Timed barium oesophagography;
D. High Resolution Manometry;
E. Upper endoscopy.
2. 3 weeks after treatment (only for pneumodilation):
A. Eckardt;
B. HRM dependent on Eckardt.
3. 3 months after treatment:
A. Questionnaires;
B. Timed barium oesophagography;
C. HRM.
4. 1 year after treatment:
A. Questionnaires;
B. Timed barium oesophagography;
C. HRM;
D. Upper endoscopy;
E. pH-impedance recording.
4. 2 years after treatment:
A. Questionnaires;
B. Timed barium oesophagography;
C. HRM;
D. Upper endoscopy.
5. 5 years after treatment:
A. Questionnaires;
B. Timed barium oesophagography;
C. HRM;
D. Upper endoscopy.
- Trial web siteN/A
- statusplanned
- CONTACT FOR PUBLIC QUERIESDr. A.J. Bredenoord
- CONTACT for SCIENTIFIC QUERIESDr. A.J. Bredenoord
- Sponsor/Initiator Academic Medical Center (AMC), Amsterdam
- Funding
(Source(s) of Monetary or Material Support)
Academic Medical Center (AMC)
- PublicationsN/A
- Brief summaryAchalasia is a rare motility disorder of the oesophagus that is characterised by aperistalsis of the oesophageal body and dysrelaxation of the lower oesophageal sphincter caused by progressive destruction and degeneration of the neurons that control the esophageal muscles. Symptoms of achalasia are dysphagia, chest pain, regurgitation and weight loss.
Treatment of achalasia is focused on symptom relief, which is obtained by destroying the occluding function of the spastic lower oesophageal sphincter. Usually, the first choice of treatment is endoscopic dilation of the lower oesophageal sphincter using a pneumatic balloon. Recently, per-oral endoscopic myotomy has been introduced. With this technique, the circular muscle layers of the lower oesophageal sphincter are cut endoscopically. The first results of open labels studies with endoscopic myotomy are very positive and suggest this treatment may be superior to pneumodilation.
In order to investigate this, we have designed a multicenter randomised controlled trial in which we compare pneumodilation to endoscopic myotomy. Adult patients with symptomatic achalasia that have not been treated before are included. Required sample size is calculated at 130 patients. Primary endpoint is treatment success, defined as an Eckardt score of 3 or less in the absence of the need for endoscopic or surgical retreatment and the absence of severe complications associated with treatment. Primary endpoint is measured after two years, but follow up is continued up to 5 years. Follow up tests consist of symptom and quality of life questionnaires, upper endoscopy, barium esophagogram, esophageal high-resolution manometry and reflux monitoring using pH-impedance monitoring.

Recruiting countries: The Netherlands, USA, Hong Kong, Italy, Germany.
- Main changes (audit trail)
- RECORD29-aug-2012 - 12-sep-2012


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