Physical properties of hydrogel wound dressing and its use in low-level laser therapy (LLLT)

  • K. Wachal
  • E. Stachowska
  • K. Korpuścińska
  • B. Nowak
  • Z. Krasiński
Original Article
  • 36 Downloads

Abstract

Hydrogel dressings are routinely used in the treatment of superficial skin wounds. Due to their excellent transparency, we decided to evaluate their usefulness in laser-based medical procedures. We focused on assessing selected physical properties of HydroAid hydrogel wound dressing, used for low-level laser therapy (LLLT) aka laser biostimulation procedures. For the two wavelengths of 660 and 808 nm used in the biostimulation laser POLARIS 2, a dressing transmittance of 92 and 98%, respectively, was determined. Using a FLIR i7 thermal imaging camera, the changes in temperature distribution across the surface of the dressing were assessed, during a 3-h period following its unpacking and placing on the skin of a patient or leaving it at the ambient temperature. The results of the thermal imaging, as well as temperature measurements using a digital thermometer, showed that the cooling properties of a hydrogel dressing were maintained throughout the entire experiment and that it was capable to keep the temperature at least 5° below the skin/ambient (room) temperature. During the 6-h observation using the holographic microscope, which provided indirect insight into the processes occurring within the hydrogel, only minimum topographical changes (observable at a micrometre scale) were recorded, although dressing thickness and its flexibility decreased significantly with time. Additionally, the possibility to regenerate the hydrogel dressing by treating it with distilled water or a physiological salt solution was tested.

Keywords

Hydrogel wound dressing Low-level laser therapy Transmittance The holographic microscope 

Notes

Compliance with ethical standards

Conflict of interest

The authors declare that they have no conflict of interest.

Ethical approval

Approval by Ethical Commission is not needed.

Informed consent

Not applicable since there are no patients involved.

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Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2018

Authors and Affiliations

  • K. Wachal
    • 1
    • 2
  • E. Stachowska
    • 2
  • K. Korpuścińska
    • 2
  • B. Nowak
    • 2
  • Z. Krasiński
    • 3
  1. 1.Department of Miniinvasion SurgeryEndomedical HospitalPoznanPoland
  2. 2.Division of Metrology and Measurement Systems, Faculty of Mechanical Engineering and ManagementPoznan University of TechnologyPoznanPoland
  3. 3.First Department and Clinic of General and Vascular SurgeryPoznan University of Medical Sciences, Przemienienia Pańskiego Clinical HospitalPoznanPoland

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