NCT06690749

Using Skin Blood Flow to Measure the Effect of Different Doses of Negative Pressure Therapy

Effect of Negative Pressure Therapy on Skin Blood Flow Responses in the Scar

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 36 (actual)
• Sponsor: Asia University · Academic / Other
• Sex: All
• Age: 18 Years
• Healthy volunteers: Not accepted

Summary

Introduction. Skin blood flow (SBF) is crucial for transporting nutrients during healing to treat scarring. Negative pressure therapy (NPT) is a promising option to enhance SBF. However, it is unclear what dosage of NPT is most effective in treating scars. This study compared NPT dosages of -105 mmHg, -125 mmHg, and -145 mmHg to assess the impact of NPT treatment on SBF in scar tissue and the correlation of NPT. If participants experience any symptoms of discomfort, NPT can be discontinued immediately. 36 scarred subjects were recruited to assess the efficacy of various NPT interventions. SBF applications are defined as perfusion levels instantly affecting NPT, and termination is defined as SBF after NPT. The study runs from May 11, 2022, to May 11, 2023, at Asia University Hospital. This study was funded by the National Science and Technology Council, Taiwan (NSTC 112-2221-E-468-004) The main contact was Chi-Wen Lung, the person in charge of a college or university department of Product Design, Asia University, Taichung 413305, Taiwan.Email address: [e-mail]

Detailed description

Introduction. Skin blood flow (SBF) is crucial for transporting nutrients during healing to treat scarring. Negative pressure therapy (NPT) is a promising option to enhance SBF. This study's hypothesis was that NPT can enhance SBF in scar tissue and that the specific NPT dose affects this effect. The purpose of this study was to confirm the different dosages of NPT applied to scar tissue by comparing the blood flow before and after the effects of different NPT dosages. This will also contribute to the emerging field of scar treatment and provide evidence-based recommendations. All recruited participants were approached to participate in a research study investigating the effects of NPT in a double-blind, parallel-group study on scar healing. This study used three negative pressure changes at -105, -125 mmHg, and -145 mmHg at 10 min. The suction method created a negative pressure in the cup using an electronic negative-pressure device (Medi Pump TC-2000V; Anest Iwata Sparmax Co., Ltd., Taipei, Taiwan). A cup with an inner diameter of 45 mm and outer diameter of 53 mm was used for cupping therapy. Each side of the cup rim had a width of 4 mm; therefore, no pain was caused by the cup rim. Pearson product-moment correlation analysis was used to determine the correlations between the SBF-Baseline, SBF-Application, and SBF-Termination factors.

Conditions

• Hypertrophic Scars

Interventions

Type	Name	Description
DEVICE	Negative pressure therapy, NPT	We designed the experiment based on current clinical cases involving negative pressure therapy (NPT) for wounds and related animal studies. In this study, we applied three levels of negative pressure: -105 mmHg, -125 mmHg, and -145 mmHg, each for 10 minutes. The -125 mmHg dosage was chosen based on findings from a previous study. Similar studies that utilized increments and decrements of 20 mmHg informed our research. Moreover, to prevent any damage to new capillaries, we established a base dosage of -125 mmHg and refrained from using negative pressure levels exceeding -150 mmHg.

Timeline

• Start date: 2022-05-11
• Primary completion: 2023-05-11
• Completion: 2023-05-11
• First posted: 2024-11-15
• Last updated: 2024-11-15

Locations

1 site across 1 country: Taiwan