ClinicalTrials.gg
CompletedNCT03261622SNSUpdated Nov 2, 2023

Sacral Nerve Stimulation for Faecal Incontinence - Placebo or Clinical Effective

An interventional study of Sacral nerve stimulation at different stimulation amplitudes in Faecal Incontinence and Fecal Incontinence, sponsored by University of Aarhus. Completed at 1 site in Denmark. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2023-11-02.

Sponsored by University of Aarhus · Not applicable, Interventional, and Basic science

From the registry’s dates

  • Registered 7 months after the study started (first participant enrolled Nov 2016, registered Jun 2017).
Phase
Not applicable
Study type
Interventional
Enrollment
73
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-12

Among 21 studies in Fecal Incontinence with a site in Denmark — 3 open to participants now, 3 under way, none of them phase 3. Fecal Incontinence · Denmark.

Enrollment
8th of 20
73 · median 32
Started
2016
the only one that year
No phase
15 of 21
3 open now
Registered
12th of 21
by date
Lead sponsor
9 of 21
University of Aarhus

Among the 21 studies in Fecal Incontinence with a site in Denmark, this one is the 8th largest by enrollment of the 20 interventional ones that give a count, is the only one that started in 2016, is one of 15 with no phase, and was the 12th registered.

Fecal Incontinence

283 studies on the registry are indexed under Fecal Incontinence; 52 are open to participants now.

Browse Fecal Incontinence studies →

Open to participants now

3 of the 21 studies in Fecal Incontinence with a site in Denmark are open now. Recruiting first, the newest first:

All 3 open studies →

A study can be open while its sites in Denmark have not opened yet or have stopped. Only those recruiting at a site in Denmark →

Who these studies take

Of the 38 Fecal Incontinence studies recruiting now, 25 (66%) set no upper age limit and 9 (24%) stop at 75 or younger; 6 take children under 18; 3 take healthy volunteers.

This study: 18 Years and older · all sexes · no healthy volunteers.

The full table on the hub →

This tab as a report to print or save as PDF → With an account.

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Watch this landscapeDownload CSVNarrow it in search →With an account: a weekly mail of what changed among 21 studies in Fecal Incontinence with a site in Denmark, or all of them as a file.
02

Study summary

Sacral nerve stimulation (SNS) has over the last 20 years been recognised as an efficient treatment option for faecal incontinence (FI).

In a selected patient group we have evidence that 90% of patients will have a successful test period (≥50% reduction in incontinence episodes). If preoperative there is motor response on at least 3 out of 4 poles on the lead, at a threshold ≤1.5 mAMP.

Hypotheses In a selected patient group suffering from faecal incontinence a one-stage permanent implant will be possible. The functional results will be improved as more time can be spent finding the optimal pacemaker settings as the risk of infection is reduced compared to the stage implant. One-Stage implantation gives the opportunity to test the amount of placebo effect with SNS.

During the first 3 months postoperative patients will be randomized to either stimulation amplitude set at 90% of sensory threshold (control group) or 3 periods of stimulation at 0.05v (placebo), 50% and 90% of sensory threshold. Patients are randomized in a 1 to 2 pattern. After the initial 3 months the stimulation amplitude is increased to sensory threshold. After six months the project ends and the number of patients achieving the 50% improvement in incontinence episodes are evaluated.

Read the detailed description

Sacral nerve stimulation (SNS) has over the last 20 years been recognised as an efficient treatment option for faecal incontinence (FI). The therapy is recommended by the International Continence Society (ICS) if conservative treatments such as; regulation of diet and fibre supplements, medication, biofeedback therapy, glycerol suppositories, mini enema or transanal irrigation have been insufficient to improve continence to a satisfactory level.

The SNS therapy has traditionally been applied as a two step procedure. Firstly, a 3-4 week test-period, often with a permanent electrode with tines, followed by permanent implantation if at least a 50% symptom reduction has been obtained during the test stimulation.

In a selected patient group(idiopathic faecal incontinence or incontinence as a result of an external anal sphincter tear (\<160 degrees)) we have evidence that 90% of patients will have a successful test period (≥50% reduction in incontinence episodes). If preoperative there is motor response on at least 3 out of 4 poles on the lead, at a threshold ≤1.5 mAMP(unpublished data, submitted for publication) .

Thus, only 10% of the patients have the lead explanted after 3 to 4 weeks. In 90% of the patients a pacemaker is implanted after the test period, these patients will have an additional operation that could have been avoided if they had the permanent pacemaker implanted at the first stage.

Hypotheses In a selected patient group suffering from faecal incontinence a one-stage permanent implant will be possible. The functional results will be improved as more time can be spent finding the optimal pacemaker settings as the risk of infection is reduced compared to the stage implant. One-Stage implantation gives the opportunity to test the amount of placebo effect with SNS.

During the first 3 months postoperative patients will be randomized to either stimulation amplitude set at 90% of sensory threshold (control group) or 3 periods of stimulation at 0.05v (placebo), 50% and 90% of sensory threshold. Patients are randomized. After the initial 3 months the stimulation amplitude is increased to sensory threshold. After six months the project ends and the number of patients achieving the 50% improvement in incontinence episodes are evaluated.

03

Conditions studied

  • Faecal Incontinence
  • Fecal Incontinence

Browse trials for

Keywords

  • Sacral Nerve Stimulation
  • Sacral Nerve Modulation
04

Who can participate

Ages eligible
18 Years and older
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

  • ≥18 years
  • Idiopathic faecal incontinence or incontinence following external sphincter tear ≤ 160 degrees.
  • ≥ one faecal incontinence episode after optimized conservative treatment.
  • Ability to use the patient programmer.

Exclusion criteria

Exclusion Criteria:

  • Pregnancy
  • Diabetes
  • Neurological diseases, including spinal cord injuries
  • Pelvic irradiation
  • Rectal resections
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.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Basic science
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Double (Participant, Investigator)
Enrollment
73 participants (actual)

Study arms

  • Active comparator
    Control arm

    Stimulation amplitude at 90% of sensory threshold during period 1 to 3. (each period 4 weeks)

    Device: Sacral nerve stimulation at different stimulation amplitudes

  • Sham comparator
    Intervention arm

    Alternation of stimulation amplitude 1. Period - Stimulation amplitude 0.05 Volts (lowest possible) 2. Period - Stimulation amplitude - 50% of sensory threshold. 3. Period - Stimulation amplitude - 90% of sensory threshold.

    Device: Sacral nerve stimulation at different stimulation amplitudes

Interventions

  • DeviceSacral nerve stimulation at different stimulation amplitudes

    Exploring the effect of different stimulation amplitude in a randomized study

06

What researchers measure

Primary outcomes

  1. Bowel Habit Diary changes

    Change in number of incontinence episodes(Bowel Habit diary - ≥50% reduction in fecal incontinence episodes), compared to baseline.

    Time frame: 12 weeks

  2. Bowel Habit Diary changes

    Change in number of incontinence episodes(Bowel Habit diary - ≥50% reduction in fecal incontinence episodes), compared to baseline.

    Time frame: 4 weeks

Secondary outcomes

  1. Bowel Habit Diary

    Change in number of incontinence episodes(Bowel Habit diary - ≥50% reduction in fecal incontinence episodes), compared to baseline.

    Time frame: 24 weeks

  2. Functional outcome measure - Wexner Incontinence score

    Changes in Wexner incontinence score, compared to baseline.

    Time frame: 4, 8, 12, and 24 weeks

  3. Functional outcome measure - St. Marks incontinence score

    Changes in St. Marks incontinence score, compared to baseline.

    Time frame: 4, 8, 12, and 24 weeks

  4. Quality of Life FI - specific

    Changes in Rockwood Faecal Incontinence Quality of Life score, compared to baseline

    Time frame: 4, 8, 12, and 24 weeks

  5. Changes in functional outcome - Urin incontinence (UI).

    ICIQ_UI Short form,

    Time frame: 4, 8, 12, and 24 weeks

  6. Visual analogue score (VAS score): patients overall satisfaction

    VAS-score (0-100) for patients satisfaction with overall: * Social function * Bowel function * Quality of life Baseline value used as reference

    Time frame: 4, 8, 12, and 24 weeks

  7. Anal physiology test

    Functional Lumen Imaging Probe (endoFLIP) and anal sensibility. The endoFLIP allows dynamic examination of the geometry and segmental distensibility properties of the anal canal by simultaneous measurement of anal pressure(PSI) and luminal cross sectional areas (CSAs) at 16 points along the length of the anal canal

    Time frame: baseline, 4,8,12 and 25 weeks after implantation(Only in patients implanted in Aarhus, Denmark)

07

Study locations

1 site
  • Anal Physiology Laboratory, Surgical Research Section 900, Aarhus University Hospital
    Aarhus, Aarhus C 8000, Denmark
08

References and documents

Individual participant data

Plan to share: Yes — All participants in the study group have access to the data and if agreed in the study group sub-analysis can be made after the trial has ended.

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 Nov 2016 to primary completion in Nov 2019, 36 months.

Of 70 non-industry interventional studies with no phase under Fecal Incontinence, half reached primary completion within 36 months of starting (the median), counting those still running; a quarter within 16 and three quarters within 57. This study's 36 months is close to that.

Counting every sponsor, half of 86 studies reached it within 36 months; a quarter within 20 and three quarters within 57.

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

Registered
Jun 23, 2017
First posted
Aug 25, 2017
StartActual
Nov 1, 2016
Primary completionActual
Nov 1, 2019
CompletionActual
Nov 1, 2020
Last update
Nov 2, 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 Nov 2, 2023, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT03261622
Collaborators
University of Tromso, Hvidovre University Hospital
Responsible party
Jakob Jakobsen (Principal Investigator (M.D. Ph.D.), University of Aarhus) — Principal investigator
First posted
Aug 25, 2017
Start date
Nov 1, 2016
Primary completion
Nov 1, 2019
Completion
Nov 1, 2020
Last update
Nov 2, 2023

Study contacts

Jakob K. Jakobsen, MD. Ph.D.
principal investigator · Anal Physiology Laboratory, Surgical Research Section 900, Aarhus University Hospital

Oversight

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

Not currently enrolling

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

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