- ICH GCP
- USA klinikai vizsgálatok nyilvántartása
- Klinikai vizsgálat NCT07575295
A Randomized Controlled Trial Comparing Underwater Versus Conventional Preventive Coagulation for Intraprocedural Vessel Management During Peroral Endoscopic Myotomy (POEM)
Peroral Endoscopic Myotomy (POEM) has become an established, minimally invasive therapy for achalasia and esophageal motility disorders. Submucosal tunnelling is a critical phase of POEM and requires meticulous haemostasis to avoid bleeding, loss of orientation, reduced visibility, and prolonged procedural time.
The current standard method of vessel coagulation during POEM involves conventional coagulation under CO₂ insufflation using the hybrid knife (HK). However, this approach can require additional hemostatic devices-most commonly coagulation forceps-particularly when dealing with large-calibre vessels or resistant bleeding.
A novel technique-underwater preventive coagulation-leverages water as a conductive medium. Preliminary evidence suggests that:
- electrosurgical current in water is focalized at the interface of the vessel,
- allowing a soft sealing of the vessel wall,
- reducing the risk of vessel rupture or unintended deep thermal injury,
- and potentially eliminating the need to convert to coagulation forceps. Pilot data from our center demonstrate that underwater prophylactic sealing of large vessels during POEM is feasible, safe, and associated with markedly reduced need for rescue coagulation forceps. The technique is already used in practice but lacks systematic evidence from prospective randomized trials.
This study is designed to provide high-quality evidence on whether underwater vessel coagulation improves haemostatic efficiency, reduces intra-procedural bleeding, and minimizes device changes during POEM.
All POEM procedures will be performed under general anesthesia in the supine position using Fujifilm high-definition gastroscopes with a 2.8 mm channel and transparent distal cap.
Steps (Both Arms)
- Identify the esophagogastric junction (EGJ).
- Inject saline + methylene blue submucosally.
- Create a 2 cm mucosal incision at 5-6 o'clock position, 10 cm above EGJ.
- Enter the submucosal space.
- Perform submucosal tunnelling down to EGJ and 2-3 cm into cardia.
Perform vessel haemostasis according to group allocation:
- Underwater coagulation (intervention)
- CO₂-based conventional coagulation (control)
- Perform circular myotomy (with occasional full-thickness myotomy when indicated).
- Close the mucosal entry using hemostatic clips.
- Record procedure time, instrument exchanges, bleeding events, and forceps usage.
Equipment
- Hybrid Knife (Erbe Elektromedizin GmbH)
- VIO 3 generator + ERBEJet 2 water-jet system
- Methylene-blue tinted saline
- Electrosurgical settings: ENDO CUT Q 2-3-3 for mucosal incision and myotomy
A tanulmány áttekintése
Állapot
Körülmények
Beavatkozás / kezelés
Részletes leírás
Primary Objective
To compare the proportion of POEM patients requiring rescue haemostasis with coagulation forceps (for active bleeding) between:
1. Underwater preventive vessel coagulation, and 2. Conventional vessel coagulation under CO₂ insufflation. Secondary Objectives
- To compare composite forceps use (rescue + prophylactic) between groups.
- To evaluate the frequency of prophylactic-only forceps use.
- To compare total number of forceps applications per procedure.
- To determine differences in intra-procedural bleeding episodes.
- To compare procedural efficiency (procedure time, number of instrument exchanges).
- To compare hematological and inflammatory markers (Hb drop, Hct, CRP, WBC).
- To compare delayed bleeding rates within 30 days.
- To evaluate overall complication rates (intra- and post-procedural).
- To assess patient-reported outcomes (pain, tolerability). A prospective, randomized, open-label, parallel-group, controlled clinical trial.
Study Arms Intervention Arm: Underwater Coagulation
- Vessel coagulation performed entirely underwater using the Hybrid Knife.
- SWIFT COAG: E3 (89 W) for POEM.
- Physiological saline instilled to completely displace air around the target vessel.
Control Arm: Conventional Coagulation (CO₂ Setting)
- Standard vessel isolation and coagulation under CO₂ insufflation.
- SWIFT COAG: E3 (89 W) for POEM.
Tanulmány típusa
Beiratkozás (Becsült)
Kapcsolatok és helyek
Tanulmányi kapcsolat
- Név: Rajesh Goud Mr Maragoni, M.Pharm
- Telefonszám: 312 04023378888
- E-mail: rajeshgoud761@gmail.com
Tanulmányozza a kapcsolattartók biztonsági mentését
- Név: Zaheer Nabi Dr Mohammed, MD DNB
- Telefonszám: 427 04023378888
- E-mail: zaheernabi1978@gmail.com
Tanulmányi helyek
-
-
Telangana
-
Hyderabad, Telangana, India, 500082
- Toborzás
- Asian Institute of Gastroenterology Hospital
-
Kapcsolatba lépni:
- Mohan Ramchandani, MBBS
- Telefonszám: 802 04023378888
- E-mail: ramchandanimohan@gmail.com
-
Kapcsolatba lépni:
- Rajesh Goud Mr Maragoni, M.Pharm MBA
- Telefonszám: 301 04023378888
- E-mail: rajeshgoud761@gmail.com
-
-
Részvételi kritériumok
Jogosultsági kritériumok
Tanulmányozható életkorok
- Felnőtt
- Idősebb felnőtt
Egészséges önkénteseket fogad
Mintavételi módszer
Tanulmányi populáció
Leírás
Inclusion Criteria:
- Age ≥ 18 years
- Diagnosis of achalasia or esophageal motility disorder planned for POEM
- Ability to provide informed consent
Exclusion Criteria:
- Anticoagulant or antithrombotic therapy not safely stoppable
- Known coagulopathy or platelet disorder
- Esophageal/gastric varices
- Previous POEM or Heller's myotomy
- Prior treatment for same condition
- Inability or refusal to consent
- Visualized vessels smaller than the HK inner diameter (1.2 mm)
Tanulási terv
Hogyan készül a tanulmány?
Tervezési részletek
Kohorszok és beavatkozások
Csoport / Kohorsz |
Beavatkozás / kezelés |
|---|---|
|
Under Water Coagulation
Intervention Arm: Underwater Coagulation
|
Leverages water as a conductive medium. Preliminary evidence suggests that:
|
|
Conventional Coagulation
Control Arm: Conventional Coagulation (CO₂ Setting)
|
Mit mér a tanulmány?
Elsődleges eredményintézkedések
Eredménymérő |
Intézkedés leírása |
Időkeret |
|---|---|---|
|
To compare the proportion of POEM patients requiring rescue haemostasis with coagulation forceps (for active bleeding) between:
Időkeret: 60 minutes
|
|
60 minutes
|
Másodlagos eredményintézkedések
Eredménymérő |
Intézkedés leírása |
Időkeret |
|---|---|---|
|
To compare composite forceps use (rescue + prophylactic) between groups.
Időkeret: 60 minutes
|
To compare the proportion of POEM patients requiring rescue haemostasis with coagulation forceps (for active bleeding) between: 1.Underwater preventive vessel coagulation, and Conventional vessel coagulation under CO₂ insufflation |
60 minutes
|
|
To evaluate the frequency of prophylactic-only forceps use.
Időkeret: 60 minutes
|
To compare the proportion of POEM patients requiring rescue haemostasis with coagulation forceps (for active bleeding) between: 1.Underwater preventive vessel coagulation, and Conventional vessel coagulation under CO₂ insufflation |
60 minutes
|
|
To compare total number of forceps applications per procedure.
Időkeret: 60 minutes
|
To compare the proportion of POEM patients requiring rescue haemostasis with coagulation forceps (for active bleeding) between: 1.Underwater preventive vessel coagulation, and Conventional vessel coagulation under CO₂ insufflation |
60 minutes
|
|
To determine differences in intra-procedural bleeding episodes
Időkeret: 60 minutes
|
To compare the proportion of POEM patients requiring rescue haemostasis with coagulation forceps (for active bleeding) between: 1.Underwater preventive vessel coagulation, and Conventional vessel coagulation under CO₂ insufflation |
60 minutes
|
|
To compare procedural efficiency (procedure time, number of instrument exchanges
Időkeret: 60 minutes
|
To compare the proportion of POEM patients requiring rescue haemostasis with coagulation forceps (for active bleeding) between: 1.Underwater preventive vessel coagulation, and Conventional vessel coagulation under CO₂ insufflation |
60 minutes
|
|
To compare hematological and inflammatory markers (Hb drop, Hct, CRP, WBC)
Időkeret: 24 hours
|
To compare the proportion of POEM patients requiring rescue haemostasis with coagulation forceps (for active bleeding) between: 1.Underwater preventive vessel coagulation, and Conventional vessel coagulation under CO₂ insufflation |
24 hours
|
|
To compare delayed bleeding rates
Időkeret: 30 days
|
To compare the proportion of POEM patients requiring rescue haemostasis with coagulation forceps (for active bleeding) between:1.Underwater preventive vessel coagulation, and Conventional vessel coagulation under CO₂ insufflation
|
30 days
|
|
To evaluate overall complication rates (intra- and post-procedural)
Időkeret: 24 hours
|
To compare the proportion of POEM patients requiring rescue haemostasis with coagulation forceps (for active bleeding) between: 1.Underwater preventive vessel coagulation, and Conventional vessel coagulation under CO₂ insufflation |
24 hours
|
|
To assess patient-reported outcomes (pain, tolerability).
Időkeret: 72 hours
|
To compare the proportion of POEM patients requiring rescue haemostasis with coagulation forceps (for active bleeding) between: 1.Underwater preventive vessel coagulation, and Conventional vessel coagulation under CO₂ insufflation |
72 hours
|
Együttműködők és nyomozók
Nyomozók
- Tanulmányi igazgató: Mohan Dr Ramchandani, MD DM, Asian Institute of Gastroenterology
Tanulmányi rekorddátumok
Tanulmány főbb dátumok
Tanulmány kezdete (Tényleges)
Elsődleges befejezés (Becsült)
A tanulmány befejezése (Becsült)
Tanulmányi regisztráció dátumai
Először benyújtva
Először nyújtották be, amely megfelel a minőségbiztosítási kritériumoknak
Első közzététel (Tényleges)
Tanulmányi rekordok frissítései
Utolsó frissítés közzétéve (Tényleges)
Az utolsó frissítés elküldve, amely megfelel a minőségbiztosítási kritériumoknak
Utolsó ellenőrzés
Több információ
A tanulmányhoz kapcsolódó kifejezések
Egyéb vizsgálati azonosító számok
- POEM UWC 2026
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