Trial of Endoscopy Bipolar and Argon of Chronic Rectal Bleeding From Radiation Telangiectasias

This study has been completed.
Sponsor:
Information provided by:
Federal University of São Paulo
ClinicalTrials.gov Identifier:
NCT00725244
First received: July 28, 2008
Last updated: October 16, 2008
Last verified: July 2008
  Purpose

Aim:

To compare the efficacy, safety and number of sessions of bipolar eletrocoagulation (BEC) and argon plasma coagulation (APC) in the management of the bleeding telangiectasias from chronic radiation coloproctopathy (CRCP).

Methods:

Thirty patients with active bleeding from telangiectasias were enrolled in two groups (15 BEC and 15 APC) and classified according of Saunders score. BEC settings were 50 W and APC settings were 40 W and 1.0 l/min. Colonoscopy was the first exam to rule out synchronous lesions and follow-up was performed with sigmoidoscopies. Clinical cure was defined as cessation of bleeding and endoscopic cure was determined by absence of telangiectasias. Failure was defined whenever more than 7 sessions or other therapy was necessary.


Condition Intervention Phase
Radiation Injuries
Telangiectasis
Device: Bipolar eletrocoagulation
Device: Argon Plasma Coagulation
Phase 4

Study Type: Interventional
Study Design: Allocation: Randomized
Endpoint Classification: Safety/Efficacy Study
Intervention Model: Parallel Assignment
Masking: Single Blind (Subject)
Primary Purpose: Treatment
Official Title: A Randomized Prospective Study of Endoscopy Bipolar Eletrocoagulation and Argon Plasma Coagulation of Chronic Rectal Bleeding From Radiation Telangiectasias

Resource links provided by NLM:


Further study details as provided by Federal University of São Paulo:

Primary Outcome Measures:
  • Improve of rectal bleeding [ Time Frame: 6 months ] [ Designated as safety issue: No ]

Secondary Outcome Measures:
  • Complications of each group [ Time Frame: 6 months ] [ Designated as safety issue: Yes ]

Enrollment: 30
Study Start Date: May 2005
Study Completion Date: July 2008
Primary Completion Date: November 2007 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: 1
Bipolar Eletrocoagulation was performed with a high-frequency electrosurgical generator (ERBE® ICC 200 Eletromedizin, Tubingen, Germany), using Gold probe (Wilson- Cook®) with 7 Fr diameter and 300 cm length. The power setting was 50 W. Coagulation of each telangiectasia was achieved with the probes by applying light pressure directly on the telangiectasia.
Device: Bipolar eletrocoagulation
Bipolar Eletrocoagulation was performed with a high-frequency electrosurgical generator (ERBE® ICC 200 Eletromedizin, Tubingen, Germany), using Gold probe (Wilson- Cook®) with 7 Fr diameter and 300 cm length. The power setting was 50 W. Coagulation of each telangiectasia was achieved with the probes by applying light pressure directly on the telangiectasia.
Other Names:
  • - bipolar probe
  • - bipolar electrocoagulation
Active Comparator: 2
Argon Plasma Coagulation was delivered using a "spray-painting" technique, with short applications at 40 W power with a gas flow of 1.0l per minute. APC equipment was an argon delivery unit (ERBE® ICC 300) coupled a high frequency surgery unit (ERBE® ICC 200). Only the end-firing probe with 2.3 mm and 220 cm length was used. The probe was purged with argon, tested and passed though the endoscope until it extends approximately 1 cm from the tip. The probe was hold just above the mucosal surface and the contact was avoided. During the procedure periodic suction was made to prevent over-distention with gas and consequently patient discomfort.
Device: Argon Plasma Coagulation
Argon plasma coagulation was delivered using a "spray-painting" technique, with short applications at 40 W power with a gas flow of 1.0l per minute. APC equipment was an argon delivery unit (ERBE® ICC 300) coupled a high frequency surgery unit (ERBE® ICC 200). Only the end-firing probe with 2.3 mm and 220 cm length was used. The probe was purged with argon, tested and passed though the endoscope until it extends approximately 1 cm from the tip. The probe was hold just above the mucosal surface and the contact was avoided. During the procedure periodic suction was made to prevent over-distention with gas and consequently patient discomfort.
Other Names:
  • Argon Laser
  • Argonio

Detailed Description:

Thirty patients with active and chronic hematochezia from radiation telangiectasias were randomized in two groups :

  • fifteen patients in group 1- bipolar eletrocoagulation (BE) and
  • fifteen in group 2 - argon plasma coagulation(APC). For inclusion in the study, all patients were required to have active (at least one episode last week) and chronic (persist or appear 6 months after the conclusion of radiotherapy) rectal bleeding. Between May 2005 and April 2008, patients were treated and followed at the Endoscopy Unit in the São Paulo Hospital (UNIFESP).
  Eligibility

Ages Eligible for Study:   18 Years to 88 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  • active (at least one episode last week) and chronic (persist or appear 6 months after the conclusion of radiotherapy) rectal bleeding.
  • previous radiotherapy at least 6 months ago
  • presence of colonic or rectal telangiectasias
  • patients that agreed to participate of the study and signed the Term of Free Consent and Cleared

Exclusion Criteria:

  • prior endoscopic treatment
  • rectal or colonic surgery
  • stenosis rectal
  • rectal bleeding before radiotherapy
  • severe cardiac disease
  Contacts and Locations
Please refer to this study by its ClinicalTrials.gov identifier: NCT00725244

Locations
Brazil
Federal University Of São Paulo - Gastroenterology
Sao Paulo, Brazil
Sponsors and Collaborators
Federal University of São Paulo
Investigators
Study Director: Angelo Ferrari, PhD Federal University of São Paulo
  More Information

No publications provided

Responsible Party: Luciano Henrique Lenz Tolentino, Federal University of São Paulo
ClinicalTrials.gov Identifier: NCT00725244     History of Changes
Other Study ID Numbers: 556/05
Study First Received: July 28, 2008
Last Updated: October 16, 2008
Health Authority: Brazil: National Committee of Ethics in Research

Keywords provided by Federal University of São Paulo:
Radiation Injuries
Telangiectasis
Bipolar Eletrocoagulation
Argon Plasma Coagulation

Additional relevant MeSH terms:
Hemorrhage
Radiation Injuries
Telangiectasis
Wounds and Injuries
Pathologic Processes
Vascular Diseases
Cardiovascular Diseases

ClinicalTrials.gov processed this record on April 16, 2014