Influence of Sun Protection and Linear Repair of Cutaneous Surgical Defects
Primary Purpose
Surgical Wound, Wound Heal, Wound of Skin
Status
Recruiting
Phase
Not Applicable
Locations
United States
Study Type
Interventional
Intervention
Zinc containing suncreen
Sponsored by
About this trial
This is an interventional other trial for Surgical Wound focused on measuring Sun Protection, Cutaneous Surgery, Wound Closure
Eligibility Criteria
Inclusion Criteria:
- Patient is ≥ 18 years of age
- Patient is able to provide informed consent
- Patient is scheduled for a cutaneous excisional surgical procedure
- Cutaneous surgical wound closed via linear repair
- Surgery performed on sunlight-exposed anatomical regions (head, face, neck, hairless scalp)
- Patient is willing to return for follow-up visit to clinic
Exclusion Criteria:
- Patient is incarcerated
- Patient is < 18 years of age
- Patient is pregnant
- Patient unwilling to return for 3-month follow-up
- History of reaction to zinc containing sunscreen
- History of collagen vascular disease
Sites / Locations
- University of California, DavisRecruiting
Arms of the Study
Arm 1
Arm 2
Arm Type
Experimental
Experimental
Arm Label
Sunscreen Application
No Suncreen Application
Arm Description
The study participant will be instructed to start applying the sunscreen provided to them to the randomly assigned half of the wound (A or B).
The study participant will be instructed to not apply the sunscreen provided to them to the randomly assigned half of the wound (A or B).
Outcomes
Primary Outcome Measures
Patient observer assessment score (POSAS)
The primary end point will be the two blinded reviewers sum of the component parts of the patient observer assessment score (POSAS).
The observer scale of the POSAS consists of six items (vascularity, pigmentation, thickness, relief, pliability and surface area). All items are scored on a scale ranging from 1 ('like normal skin') to 10 ('worst scar imaginable'). The sum of the six items results in a total score of the POSAS observer scale. Categories boxes are added for each item. Furthermore, an overall opinion is scored on a scale ranging from 1 to 10.
Secondary Outcome Measures
Colorimeter measurement of wound vascularity and hyperpigmentation.
The secondary endpoints will be the measures of wound vascularity and hyperpigmentation. The colorimeter uses the variables L*, a*, and b* as a means of expressing color as a quantifiable number. L* measuring color brightness between 0 to 100 with 0 being total black and 100 being total white. The a* parameter changes from positive values for red to negative values for green for evaluating the degree of erythema and vascularity. The b* parameter changes from positive values for yellow to a negative value for blue. The L* and b* values will calculate the ITA measure, which represents the overall pigmentation of skin color, where a higher ITA corresponds to lighter skin color. Increased pigmentation of the skin will be seen by a rising b* value and a decreasing L* value.
Full Information
NCT ID
NCT05074238
First Posted
September 29, 2021
Last Updated
August 3, 2022
Sponsor
University of California, Davis
1. Study Identification
Unique Protocol Identification Number
NCT05074238
Brief Title
Influence of Sun Protection and Linear Repair of Cutaneous Surgical Defects
Official Title
Influence of Sun Protection on the Aesthetic Outcomes Following Linear Repair of Cutaneous Surgical Defects, a Randomized Split-Wound Study
Study Type
Interventional
2. Study Status
Record Verification Date
August 2022
Overall Recruitment Status
Recruiting
Study Start Date
July 16, 2021 (Actual)
Primary Completion Date
July 16, 2023 (Anticipated)
Study Completion Date
December 1, 2023 (Anticipated)
3. Sponsor/Collaborators
Responsible Party, by Official Title
Sponsor
Name of the Sponsor
University of California, Davis
4. Oversight
Studies a U.S. FDA-regulated Drug Product
No
Studies a U.S. FDA-regulated Device Product
No
Data Monitoring Committee
No
5. Study Description
Brief Summary
The purpose of this study is to determine the potential influence of sun protection on the aesthetic outcome of post-surgical scars following the reconstruction of Mohs micrographic surgery defects via linear repair. This study will be performed as a randomized split-wound study. Half of the wound will be treated with zinc containing sunscreen and the other half of the wound would not be treated. Three-months post-surgery, the scar will be evaluated via the patient observer scar assessment scale (POSAS), a validated scar instrument, as well as a colorimeter to measure the amount of vascularity, and hyperpigmentation between the treated and the non-treated area compared to the 'surrounding skin' defined as skin in the proximity but not adjacent to the wound. Any adverse events will also be recorded.
Detailed Description
Primary linear repair remains a fundamental and common means of closing skin defects; however, to date, there are no clinical studies currently within the medical literature that explore the potential influence that sunlight exposure has on the cosmetic outcome of surgical site cutaneous scars. Therefore, this study aims to determine the potential effects of sun protection on post-surgical scar cosmesis following linear repairs on sun-exposed areas of the face, hairless scalp, and neck.
It has been thought that sun exposure is associated with a higher chance of erythema and dyspigmentation in cutaneous wounds, however, this remains unproven and findings pertaining to this topic remain largely confined to animal studies. In one study, researchers found that the wounds of rats chronically exposed to UVA radiation exhibited diminished wound contraction during the healing process compared to non-irradiated controls. Another study simulated UV radiation before and after laser treatment on vascular skin lesions in groups of hairless mice. In the postoperative UV-irradiated group, the mice skin displayed significant fibrosis, slower healing, and marked hyperpigmentation. A different group of researchers explored the effect of UVA light exposure on wound pigmentation on scars with and without dry tattooing. This study found that dry tattooing with UVA light exposure demonstrated significant improvement of hypopigmented scars. The researchers of this study hypothesized that the light exposure led to an inflammation-driven hyperpigmentation response. A separate study hypothesized that UV exposure may be beneficial for wound healing by stimulating melanocyte distribution via keratinocyte-melanocyte cross-talk, and thus, preventing hypopigmentation. Irregularity in the pigmentation of healing scars remains a large insecurity of patients and has led to their desire for surgical corrections of these scars. These researchers suggested that UV exposure will promote melanin production, and thus, potentiate a protective effect against further UV damage and wound hypopigmentation.
Skin color changes provide information and clues about certain pathologies, disease progression, and patient response to treatment. Factors such as melanin vascularity contribute to skin color. Historically, this evaluation of skin color has been subjective, however, objective analysis is now possible by means of colorimeters. Cutaneous color changes can be quantified using the standardized CIELAB system, which measures color light intensity, as well as red/green and yellow/blue intensity. Following Mohs micrographic surgery, the colorimeter can be used as an objective measurement to assess scar hyperpigmentation and vascularity.
6. Conditions and Keywords
Primary Disease or Condition Being Studied in the Trial, or the Focus of the Study
Surgical Wound, Wound Heal, Wound of Skin, Scar
Keywords
Sun Protection, Cutaneous Surgery, Wound Closure
7. Study Design
Primary Purpose
Other
Study Phase
Not Applicable
Interventional Study Model
Parallel Assignment
Model Description
Factorial Assignment At the follow-up visit, two blinded observers will record their scores independently using the physician observer scar assessment score instrument (POSAS).
Masking
Outcomes Assessor
Allocation
Randomized
Enrollment
50 (Anticipated)
8. Arms, Groups, and Interventions
Arm Title
Sunscreen Application
Arm Type
Experimental
Arm Description
The study participant will be instructed to start applying the sunscreen provided to them to the randomly assigned half of the wound (A or B).
Arm Title
No Suncreen Application
Arm Type
Experimental
Arm Description
The study participant will be instructed to not apply the sunscreen provided to them to the randomly assigned half of the wound (A or B).
Intervention Type
Other
Intervention Name(s)
Zinc containing suncreen
Intervention Description
The study participant will be randomized via a randomization tool within the REDCap database as to which half of the wound ("A" or "B") the patient will be asked to apply zinc containing sunscreen for the duration of the study.
Primary Outcome Measure Information:
Title
Patient observer assessment score (POSAS)
Description
The primary end point will be the two blinded reviewers sum of the component parts of the patient observer assessment score (POSAS).
The observer scale of the POSAS consists of six items (vascularity, pigmentation, thickness, relief, pliability and surface area). All items are scored on a scale ranging from 1 ('like normal skin') to 10 ('worst scar imaginable'). The sum of the six items results in a total score of the POSAS observer scale. Categories boxes are added for each item. Furthermore, an overall opinion is scored on a scale ranging from 1 to 10.
Time Frame
3-12 months
Secondary Outcome Measure Information:
Title
Colorimeter measurement of wound vascularity and hyperpigmentation.
Description
The secondary endpoints will be the measures of wound vascularity and hyperpigmentation. The colorimeter uses the variables L*, a*, and b* as a means of expressing color as a quantifiable number. L* measuring color brightness between 0 to 100 with 0 being total black and 100 being total white. The a* parameter changes from positive values for red to negative values for green for evaluating the degree of erythema and vascularity. The b* parameter changes from positive values for yellow to a negative value for blue. The L* and b* values will calculate the ITA measure, which represents the overall pigmentation of skin color, where a higher ITA corresponds to lighter skin color. Increased pigmentation of the skin will be seen by a rising b* value and a decreasing L* value.
Time Frame
3-12 months
10. Eligibility
Sex
All
Minimum Age & Unit of Time
18 Years
Accepts Healthy Volunteers
No
Eligibility Criteria
Inclusion Criteria:
Patient is ≥ 18 years of age
Patient is able to provide informed consent
Patient is scheduled for a cutaneous excisional surgical procedure
Cutaneous surgical wound closed via linear repair
Surgery performed on sunlight-exposed anatomical regions (head, face, neck, hairless scalp)
Patient is willing to return for follow-up visit to clinic
Exclusion Criteria:
Patient is incarcerated
Patient is < 18 years of age
Patient is pregnant
Patient unwilling to return for 3-month follow-up
History of reaction to zinc containing sunscreen
History of collagen vascular disease
Central Contact Person:
First Name & Middle Initial & Last Name or Official Title & Degree
Iryna Rybak, BS
Phone
916-551-2636
Email
irybak@ucdavis.edu
First Name & Middle Initial & Last Name or Official Title & Degree
Daniel Eisen, MD
Email
dbeisen@ucdavis.edu
Facility Information:
Facility Name
University of California, Davis
City
Sacramento
State/Province
California
ZIP/Postal Code
95816
Country
United States
Individual Site Status
Recruiting
Facility Contact:
First Name & Middle Initial & Last Name & Degree
Iryna Rybak, BS
Phone
916-551-2636
Email
irybak@ucdavis.edu
First Name & Middle Initial & Last Name & Degree
Daniel Eisen, BS
Email
dbeisen@ucdavis.edu
First Name & Middle Initial & Last Name & Degree
Daniel Eisen, MD
12. IPD Sharing Statement
Plan to Share IPD
No
Learn more about this trial
Influence of Sun Protection and Linear Repair of Cutaneous Surgical Defects
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