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Effect of infrared and red monochromatic light on equine wound healing

Michanek, Peter and Toth, Tamas and Bergström, Evelina and Treffenberg Pettersson, Helena and Bergh, Anna (2020). Effect of infrared and red monochromatic light on equine wound healing. Equine Veterinary Journal. 53 , 143-148
[Journal article]

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Abstract

Background Light-emitting diodes (LEDs) are commonly used for treating a variety of disorders in horses, including wounds. Despite its claim to shorten healing times, there is a lack of scientific documentation regarding its effects.Objectives To investigate if treatment with pulsating visible red light (lambda approximate to 637 nm) and near-infrared (NIR) light (lambda approximate to 956 nm) affects wound healing.Study design Randomised blinded controlled experimental study.Methods A circular skin wound (o = 2 cm) was created on each side of the neck in eight healthy horses. One randomly chosen wound received light treatment and the other served as an untreated control. Treatment duration was 4 minutes and 40 seconds (red light 95 seconds, 2.3 mW/cm(2); NIR light 185 seconds, 6.4 mW/cm(2)) and was performed once daily on day 0-4, 7-11, 14-18 and 21-25. The wounds were photographed and evaluated using digital photoplanimetry on day 0, 1, 2, 3, 4, 7, 14, 21, 28 and 35. The degree of swelling was assessed with diagnostic ultrasound on the same days except the last recording was performed on day 36 instead of 35. Days to total healing was recorded. ANOVA was used for statistical analysis (P < .05).Results The wound area (P = .2-.9) and degree of swelling (P = .2-1.0) did not differ between treated and control groups on any day. There was a significant difference (P = .03) in healing time between control (49.0, 95% CI = 35.4-62.6 days) and treated wounds (51.8, 95% CI = 38.7-64.8 days).Main limitations The wounds were treated until day 25 and this study does not investigate the effect of a longer treatment period than 25 days.Conclusions The results of this study do not indicate any clinically relevant positive effect of pulsating visible red light and NIR light on the healing of experimental skin wounds in horses, compared with no treatment.

Authors/Creators:Michanek, Peter and Toth, Tamas and Bergström, Evelina and Treffenberg Pettersson, Helena and Bergh, Anna
Title:Effect of infrared and red monochromatic light on equine wound healing
Series Name/Journal:Equine Veterinary Journal
Year of publishing :2020
Volume:53
Page range:143-148
Number of Pages:6
Publisher:WILEY
ISSN:0425-1644
Language:English
Publication Type:Journal article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution-Noncommercial 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 4 Agricultural Sciences > 403 Veterinary Science > Clinical Science
Keywords:horse, swelling, low level light therapy, wound
URN:NBN:urn:nbn:se:slu:epsilon-p-105409
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-105409
Additional ID:
Type of IDID
DOI10.1111/evj.13266
Web of Science (WoS)000528063700001
ID Code:22423
Faculty:VH - Faculty of Veterinary Medicine and Animal Science
University Animal Hospital
Department:(VH) > Department of Biomedical Science and Veterinary Public Health
University Animal Hospital (UAH)
(VH) > Dept. of Clinical Sciences
Deposited By: SLUpub Connector
Deposited On:18 Feb 2021 11:23
Metadata Last Modified:18 Feb 2021 11:31

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