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Development of a Benchtop Model for Evaluating the Compatibility of Wound Dressing Materials with Negative Pressure Wound Therapy Systems
Published on: May 2, 2025
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Initial experience with negative-pressure wound therapy with instillation in complex wounds
Dimas André Milcheski1, Marcelo Lima Portocarrero1, Daniel Mamere Alvarez1
1Universidade de São Paulo, Disciplina de Cirurgia Plástica do Hospital das Clínicas, São Paulo, SP, Brasil.
Revista Do Colegio Brasileiro De Cirurgioes
|October 12, 2017
Summary
Negative-Pressure Wound Therapy with instillation (NPWTi) shows promise for complex wounds. Initial findings suggest shorter hospitalization times compared to historical controls, warranting further investigation.
Area of Science:
- Wound Healing
- Medical Devices
- Clinical Trials
Background:
- Complex wounds, including infected or contaminated ones, present significant treatment challenges.
- Negative-Pressure Wound Therapy (NPWT) is a recognized modality for wound management.
- Instillation therapy combined with NPWT offers a novel approach to wound care.
Purpose of the Study:
- To document the initial clinical experience using Negative-Pressure Wound Therapy with instillation (NPWTi).
- To evaluate the efficacy of NPWTi in managing infected or contaminated complex wounds.
- To assess key outcomes such as hospitalization duration and wound closure time.
Main Methods:
- Utilized V.A.C. Ulta with Veraflo instillation system for NPWTi.
- Employed continuous negative pressure at 125 mmHg with 20-minute saline instillations between pauses.
- Wound preparation followed by graft or flap coverage.
Main Results:
- Ten patients with complex or contaminated wounds were treated.
- Mean NPWTi changes: 1.4; Mean surgeries: 2.4.
- Mean time to complete wound coverage: 6.3 days; Mean time to discharge: 11.4 days.
Conclusions:
- NPWTi demonstrated a shorter hospitalization duration compared to historical controls.
- The study is preliminary; further randomized controlled trials are needed.
- Future research should confirm NPWTi efficacy and cost-effectiveness.

