Clinical trial Recruiting at 1 site Interventional Ages 6 to 70

Using low level laser therapy to treat chronic constipation

Official title: Sacral Neuromodulation as Treatment for Chronic Constipation

Run by McMaster University · NCT03819062 · Data updated 2026-11-12

This study is testing if low level laser therapy can help people with severe chronic constipation feel better after a series of treatment sessions.

Quick facts

Study typeInterventional
Ages6 Years to 70 Years
SexAll
Enrollment20 (estimated)
SponsorMcMaster University
Academic / other
Locations1 site (Hamilton, Ontario)
StatusRecruiting
StartedSeptember 8, 2019
Main results expectedFebruary 1, 2025
Study endsFebruary 1, 2027
Registry record updatedApril 5, 2022
Trial IDNCT03819062 on ClinicalTrials.gov

Is this trial a fit for you?

Likely a good fit

Ideal candidates are patients with severe chronic refractory constipation who have abnormal findings from High-Resolution Colonic Manometry.

Probably not a fit

Patients who are pregnant, have malignancies, active bleeding, deep vein thrombosis, or are light sensitive may not benefit from this study.

A plain-English reading of the study's rules. Only the study team can confirm whether you qualify.

What this trial studies

This study investigates the effectiveness of low level laser therapy for patients suffering from severe chronic refractory constipation. Participants will undergo High-Resolution Colonic Manometry to assess abnormal coordination between colon motility and recto-anal activity, which indicates a dysfunction in the autonomic nervous system's communication with the colon. The treatment consists of eight sessions of laser therapy over three weeks, with outcomes evaluated through symptom questionnaires and physiological assessments at four and twelve weeks post-treatment. This proof of concept study aims to determine if the therapy provides more benefit than harm.

Why it matters

Potential benefit: If successful, this therapy could significantly improve the quality of life for patients with chronic constipation by restoring normal bowel function.

How similar studies have gone: While this approach is novel, similar studies exploring neuromodulation techniques have shown promise in treating other gastrointestinal disorders.

Who can join: the full rules

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients with severe chronic refractory constipation
* Must have undergone high resolution colonic manometry that shows abnormal coordination between colonic motility and ano-rectal function.

Exclusion Criteria:

* Pregnant patients
* Known malignancies in the area of treatment
* Active bleeding in area of treatment
* Active deep vein thrombosis
* When tatoos are present at area of treatment
* Patients that are light sensitive
* Patients who take NSAIDS or steroids.

Where it's running

  • McMaster University
    Hamilton, Ontario, Canada
    Recruiting

Study contacts

  • Principal investigator: Jihong Chen, MD PhD — McMaster University
  • Study coordinator: Jihong Chen, MD PhD
  • Email: chen338@mcmaster.ca
  • Phone: 2263439909

Similar studies

Other studies for the same condition or treatment. Recruiting studies are listed first.

How to take part

  1. Review the eligibility criteria above with your treating physician.
  2. Check the official listing on ClinicalTrials.gov for the latest contact details and recruitment status.
  3. Contact the study coordinator or principal investigator to ask for pre-screening. Pre-screening is free and never obligates you to enroll.
Last reviewed 2026-11-14 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.