Blue light reduces organ injury from ischemia and reperfusion.
Du Yuan, Richard D Collage, Hai Huang...
https://pubmed.ncbi.nlm.nih.gov/27114521/Actively Recruiting
Led by Rebecca E Kotcher, MD · Updated on 2026-03-04
75
Participants Needed
1
Research Sites
4 weeks
Total Duration
Researchers are investigating whether bright blue light therapy can help reduce pain and inflammation in adults with painful rib fractures. The study compares the effects of bright blue light therapy, bright white light therapy, and usual hospital lighting on pain control alongside standard pain treatments. The main question is whether adding bright blue light therapy improves pain experienced during breathing in these patients. Participants will be randomly assigned to one of three groups bright blue light therapy, bright white light therapy, or usual ambient light. Those in the blue and white light groups will receive 4 hours of light therapy each morning or early afternoon for up to 3 days while hospitalized. The usual light group will be exposed only to the hospitals normal lighting conditions during this time. During the study, participants will rate their pain at rest and during deep breaths twice daily. They will also be monitored for delirium and have blood samples taken daily to assess inflammation and circadian rhythm markers. The primary outcome is chest wall pain intensity measured up to 72 hours. Safety and other health outcomes will be tracked over 30 days, and the total participation spans the hospital stay and immediate follow-up.
CONDITIONS
Blue Light as an Anti-inflammatory and Analgesic Strategy in Thoracic Trauma
R
Rebecca E Kotcher, MD
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Rebecca E Kotcher, MD
Lead Sponsor
National Institutes of Health (NIH)
Collaborating Sponsor
This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
| Factors | Bright Blue Light | Bright Full-Spectrum (White) Light | Usual Ambient Light |
|---|---|---|---|
| What it is | Therapy lamp with a blue filter delivers bright blue light to the participant at the bedside for 4 hours daily (morning/afternoon), for up to 3 days. | Therapy lamp with a neutral density (white) filter delivers bright full-spectrum (white) light to the participant under the same administration conditions. | No additional light is delivered; lamp present but switched off, with only usual ambient room light exposure for comparable periods. |
| Role in trial and clinical context | Investigational intervention evaluating blue light's potential to reduce pain and inflammation after rib fracture. | Active comparator condition controlling for general light exposure and attention effects in pain outcomes. | Control group reflecting typical ambient lighting conditions in the inpatient environment, lamp present but off. |
| Primary use or target outcome | Study evaluates its effects on chest wall pain intensity (with incentive spirometry), markers of inflammation, delirium, opioid requirements, and hospital-free days. | Used as an active control to isolate the specific effects of blue wavelength light versus general light on pain and related outcomes. | Serves as a baseline to assess the effect of added light interventions against standard clinical lighting conditions. |
| How it is given or performed | Delivered via blue-filtered lamp at bedside, approximately 12-14 inches from the participant’s eyes, for 4 hours per day, up to 3 consecutive days. | Delivered via white-filtered lamp at bedside, same distance and schedule as blue light group. | Lamp placed similarly but remains switched off; participant exposed to typical hospital room lighting only for 4 hours per day, up to 3 days. |
| Evidence status / supporting data | Limited clinical evidence for effect on pain or inflammation in human trauma; preclinical models suggest potential anti-inflammatory and analgesic effects including reduced organ injury and lower pro-inflammatory cytokines following blue light exposure. | No specific evidence supports white light for post-traumatic pain or inflammation; used as a control for light exposure unrelated to blue wavelength. | No evidence that usual hospital ambient lighting affects pain or inflammation after rib fracture independent of other treatments. |
| Important limitations | Clinical effects on pain and inflammation in humans are not established; most evidence comes from animal studies. Limited sample size and short intervention period in the ongoing trial. | Likely no specific therapeutic benefit for pain/inflammation; serves as an active control rather than a hypothesized treatment. | Does not represent an intervention for pain or inflammation; isolates effect of novel light therapy but is not itself a therapy. |
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
You may qualify if you...
You will not qualify if you...
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - Up to 3 days
Participants receive light therapy using a specialized lamp at bedside for 4 hours daily during the morning or early afternoon hours. This intervention is repeated for up to 3 days depending on the assigned group.
Daily sessions for up to 3 days
Duration - Up to 30 days
Participants are monitored for pain intensity, opioid use, inflammatory markers, and incidence of complications for up to 30 days after light therapy.
Assessments twice daily for up to 3 days; daily assessments up to 30 days
Study Type
INTERVENTIONAL
Masking
NONE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
3
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https://pubmed.ncbi.nlm.nih.gov/31379019/Rebecca E Kotcher, MD
Lead Sponsor
National Institutes of Health (NIH)
Collaborating Sponsor