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CompletedNCT05834985Updated Apr 28, 2023

Endoscopic Management Of Controlled Colo-cutaneous Fistula As A Complication of Acute Sigmoid Diverticulitis: A Randomized Controlled Trial

An interventional study of endoscopic management of fistula due to sigmoid diverticulitis by clip or endostitches in Fistula; Sigmoid, sponsored by Zagazig University. Completed at 1 site in Egypt. Per ClinicalTrials.gov, last updated 2023-04-28.

Sponsored by Zagazig University · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Registered 2 years 4 months after the study started (first participant enrolled Dec 2020, registered Apr 2023).
Phase
Not applicable
Study type
Interventional
Enrollment
66
Allocation
Randomized
Sex
All
01

Study summary

Diverticular disease is a common condition in western countries with relatively uncommon complications[1]. Fistulae complicating diverticulitis are the result of a localized perforation into adjacent viscera, and occur in 4-23% of patients hospitalized for diverticular disease[2]. The types of fistulae include colovesical, colovaginal, colotubal, coloenteric, and colocutaneous fistulae[3]. Colocutaneous fistulae occur very rarely, accounting for 1-4% of the total number of fistulae complicating colonic diverticular disease[4]. Herein we describe a case of a fistula connecting the sigmoid colon with the left flank-lower lumbar area, due to diverticulitis of the sigmoid colon[5].

A new over-the-scope clip system, called OTSC (Ovesco Endoscopy, Tübingen, Germany), appeared on the market about 3 years ago[6]. The system consists of a nitinol clip loaded at the tip of the endoscope that can capture a large amount of tissue and compress the lesion until healed[7]. Results from animal models and initial clinical use support the efficacy of OTSC closure in the treatment of gastrointestinal bleeding; its role in the management of iatrogenic perforations in humans is less defined, and reports on its use in treating colorectal postsurgical leaks and fistulas are anecdotal [8]. Here we report on the use of OTSC in the endoscopic treatment of colo-cutaneous fistula as acomplication of acute diverticultis .

Read the detailed description

Diverticular disease is a common condition in western countries with relatively uncommon complications[1]. Fistulae complicating diverticulitis are the result of a localized perforation into adjacent viscera, and occur in 4-23% of patients hospitalized for diverticular disease[2]. The types of fistulae include colovesical, colovaginal, colotubal, coloenteric, and colocutaneous fistulae[3]. Colocutaneous fistulae occur very rarely, accounting for 1-4% of the total number of fistulae complicating colonic diverticular disease[4]. Herein we describe a case of a fistula connecting the sigmoid colon with the left flank-lower lumbar area, due to diverticulitis of the sigmoid colon[5].

A new over-the-scope clip system, called OTSC (Ovesco Endoscopy, Tübingen, Germany), appeared on the market about 3 years ago[6]. The system consists of a nitinol clip loaded at the tip of the endoscope that can capture a large amount of tissue and compress the lesion until healed[7]. Results from animal models and initial clinical use support the efficacy of OTSC closure in the treatment of gastrointestinal bleeding; its role in the management of iatrogenic perforations in humans is less defined, and reports on its use in treating colorectal postsurgical leaks and fistulas are anecdotal [8]. Here we report on the use of OTSC in the endoscopic treatment of colo-cutaneous fistula as acomplication of acute diverticultis .

Rationale:

As endoscopy is less invasive maneuver and can be done without general anathesia , so we will try to close the fistula due to acute diverticulitis with OVASCO clip , to avoid major surgery with also high incidence of recurrence again . there is only one clinical trial for this resons , so we will try to achieve result to concolude the use of endoscopy in management GIT fistulas.

Research question:

Is Endoscopic Management Of Controlled Colo-cutaneous Fistula As A complication of Acute Diverticulitis Effective?

Hypothesis:

Yes The Endoscopic Management Of Low Output Recurrent Colonic Fistula After Anterior Resection For Rectal Cancer Is Effective .

Aim of the work

Management Of Controlled Colo-cutaneous Fistula As A complication of Acute Diverticulitis \& reducing the morbidity \& mortality Endoscoplically.

Objectives

  1. To evaluate the advantages and safety of Endoscopic Management Of Controlled Colo-cutaneous Fistula As A complication of Acute Diverticulitis.
  2. To evaluate the effect of Endoscopic Management Of Controlled Colo-cutaneous Fistula As A complication of Acute Diverticulitis in reducing morbidity and postoperative hospital stay.

Subjects and Methods

Technical design:

A- Site of the study: The investigators included all patients who were presented to General Surgery Department with Controlled Colo-cutaneous Fistula As A complication of Acute Diverticulitis at Zagazig University hospital between (December 2020 to August 2023).

B- Sample size:

The sample size was calculated by using open Epi program depending on the following data ; confidence interval 95% , power of the test 80% , ratio of unexposed/ exposed 1 , the success rate of surgical repair versus endoscopic repair was 89 % versus 71 % respectively. Odd ratio 3.3 , and risk ratio 1.3 , so the calculated sample size equal 66 patients divided into two equal groups.

c- Sample selection: Included patients were randomized at a 1:1 ratio to "Endoscopic Group, EG" or "Surgical Group , SG" via the drawing of sealed envelopes containing computer-generated random numbers prepared by a third party before the start of the intervention.(simple random sample).

D- Subjects: Patients will be divided into 2 groups in accordance type of preoperative

Therapy :

Group 1: "Endoscopic Group, EG" included 33 patients. Group 2: "Surgical Group , SG" included 33 patients.

Inclusion criteria:

Patients with Controlled Colo-cutaneous Fistula As A complication of Acute Diverticulitis , recurrent fistula , failued conservative meaures .patient with good general condition (ASA I\&II).

Exclusion criteria:

We excluded patients who bad general condition (ASAIII\&IV\&V), patients with high output fistula , respond to conservative measures.

E- Data collection (tools): All patients will subjected to the followings:

patients were selected by randomization method, full history taking, Complete physical examination, laboratory investigations (complete blood picture, liver and kidney functions, coagulation profile, tumor marker tests, serum electrolytes), patients were assessed radio-logically by abdominal x- ray , abdominal ultrasound, pelvic and abdominal CT.

Study design (operational study):

A. Type of the study : A randomized Controlled Trial.

B. Steps of performance:

  1. Complete history taking.
  2. Clinical and laboratory results.
  3. Radiological results.
  4. Endoscopic management of Controlled Colo-cutaneous Fistula As A complication of Acute Diverticulitis.
  5. Analysis of the results.
  6. Preparing conclusion and recommendation.

C-Study techniques (procedure):

For patients in EG, we began with assessment of the site \& size of fistula . In this study, OTSC was used in 9 patients .We started deploying the clips perpendicular to the long axis of the defect. If needed, more than one clip was sequentially deployed, starting at edge of the defect towards the center. Standard clips were passed through-the-scope to achieve superficial tissue apposition engaging the mucosa and submucosa (with 1.2-mm-wide and 6-mm-long arms capable of an approximately 12-mm grasp) and were used in conjunction with thermal ablation or mechanical scraping of the tissue around the edges of the defect to achieve a more resilient seal.

Concurrently, the interventional radiology team subcutaneously drained the intraperitoneal free fluid using 2 intra-peritoneal tubes that were placed under US guidance in the sub-hepatic region and in the pelvis.

D-Outcomes:

Primary and secondary outcomes were incidence of postoperative hospital stay and complications in each group during the 3-months follow-up period, respectively.

02

Conditions studied

  • Fistula; Sigmoid

Keywords

  • stent, endoscopy , enod-stitches, diverticulitis
03

In context

Fistula

219 studies on the registry are indexed under Fistula; 49 are open to participants now.

This study's enrollment of 66 is above the median of 50 across 152 interventional studies indexed under Fistula.

Browse Fistula studies →

Lead sponsor

Zagazig University is the lead sponsor of 459 studies on the registry; 77 are open to participants now.

Of its 5 completed or terminated interventional studies of FDA-regulated products, 0 (0%) have results posted.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
Child (0–17), Adult (18–64), Older adult (65+)
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Patients with Controlled Colo-cutaneous Fistula As A complication of Acute Diverticulitis , recurrent fistula.
  • failued conservative meaures .
  • patient with good general condition (\&II).

Exclusion criteria

Exclusion Criteria:

  • We excluded patients who bad general condition (ASAIII\&IV\&V),
  • patients with high output fistula ,
  • respond to conservative measures.
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

ASA physical status

The anaesthetists’ scale of health before surgery: I is healthy, II has a mild illness that is under control, III a severe one, IV a severe illness that is a constant threat to life. V and VI are used for the critically ill and for organ donors.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
66 participants (actual)

Study arms

  • Active comparator
    group (1) endoscopic group

    For patients in EG, we began with assessment of the site \& size of fistula . In this study, OTSC was used in 9 patients .We started deploying the clips perpendicular to the long axis of the defect. If needed, more than one clip was sequentially deployed, starting at edge of the defect towards the center. Standard clips were passed through-the-scope to achieve superficial tissue apposition engaging the mucosa and submucosa (with 1.2-mm-wide and 6-mm-long arms capable of an approximately 12-mm grasp) and were used in conjunction with thermal ablation or mechanical scraping of the tissue around the edges of the defect to achieve a more resilient seal. Concurrently, the interventional radiology team subcutaneously drained the intraperitoneal free fluid using 2 intra-peritoneal tubes that were placed under US guidance in the sub-hepatic region and in the pelvis

    Procedure: endoscopic management of fistula due to sigmoid diverticulitis by clip or endostitches

  • No intervention
    group (2) surgical group

    sigmoid resection after proper colonic preparation with primary anstomosis with circular stapler either open or laparoscopically

Interventions

  • Procedureendoscopic management of fistula due to sigmoid diverticulitis by clip or endostitches

    endoscopic management of fistula due to sigmoid diverticulitis by clip or endostitches

06

What researchers measure

Primary outcomes

  1. incidence of recurrence of fistula

    incidence of recurrence of fistula

    Time frame: within one week after the endoscopy

Secondary outcomes

  1. incidence of side effects of endoscopy

    incidence of side effects of endoscopy

    Time frame: within one month after the surgery

07

Study locations

1 site
  • Zagazig University Hospitals
    Zagazig, Sharqua 1185, Egypt
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Dec 2020 to primary completion in Mar 2023, 27 months.

Of 45 non-industry interventional studies with no phase under Fistula, half reached primary completion within 26 months of starting (the median), counting those still running; a quarter within 15 and three quarters within 56. This study's 27 months is close to that.

Counting every sponsor, half of 51 studies reached it within 23 months; a quarter within 14 and three quarters within 52.

How these figures are worked out, and which studies are left out of them.

Registered
Apr 17, 2023
First posted
Apr 28, 2023
StartActual
Dec 1, 2020
Primary completionActual
Mar 1, 2023
CompletionActual
Apr 1, 2023
Last update
Apr 28, 2023
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Apr 28, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT05834985
Lead sponsor
Zagazig University
Responsible party
Said Mohamed Said Abdou Negm (lecturer of general surgery, Zagazig University) — Principal investigator
First posted
Apr 28, 2023
Start date
Dec 1, 2020
Primary completion
Mar 1, 2023
Completion
Apr 1, 2023
Last update
Apr 28, 2023

Study contacts

Said Mohamed Negm, MD
principal investigator · ZAGAZIG UNIVERSITY HOSPITALS

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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This study is completed, as verified in Apr 2023. You cannot join it, but the record below documents what was studied.

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