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RENASYS-G Gauze vs Foam

This information is intended for HCPs in the US.
Please consult your local Smith + Nephew representative for further details on products available in your market. 


Positive clinical outcomes and less pain on removal vs black foam1,2 

The RENASYS-G Gauze Dressing Kit with Soft Port is an antimicrobial-impregnated wound filler for use with Negative Pressure Wound Therapy (NPWT).3 Gauze has a hydrophilic nature, designed to absorb and retain fluid, and is effective for the treatment of wounds with low to moderate drainage. It should not be used in wounds that are in a weight bearing location or have moderate to heavy drainage.

The use of RENASYS Negative Pressure Wound Therapy System (NPWT) with gauze is effective in supporting wound progression,1,2 while simplifying clinicians’ lives4,5 and helping to minimize pain for patients upon dressing removal.1,2

What are the main benefits of RENASYS-G Gauze?

Clinically effective

Overall healing rates* are similar with both gauze and black foam3,6,7

In a randomized controlled trial, the use of RENASYS-G Gauze led to less scar tissue and increased vascularization compared to black foam.2

In another prospective randomized trial, the use of gauze resulted in:

  • 4.5%/day reduction in wound area8
  • 8.4%/day reduction in wound volume8

Easy to apply

Gauze can simplify and expedite dressing changes,5,8 as it doesn’t require cutting to shape and can be used on any location of the body.5

Reduces frequency of dressing changes

Gauze can be changed twice a week, while foam generally requires three dressing changes per week.

Helps minimize patient pain on removal

Dressing changes can be excruciating and cause psychological stress to patients.

Gauze has been shown to have significantly reduced pain levels at dressing change vs black foam (p=0.046)1


NPWT gauze dressings may be utilized in similar situations to white foam where there may be tunneled or undermined areas of a wound, split thickness skin grafts (STSG), and painful wounds.9-11

RENASYS tNPWT gauze dressing kits provide flexibility to tailor therapy to to meet patients' needs, even for the most challenging wounds.

Learn more about how to apply RENASYS-G Gauze:

Download and read the latest evidence comparing RENASYS tNPWT with V.A.C.

Download the RENASYS–G Gauze Dressing Kit with Soft Port application guide

*Healing rates defined as percent reduction in wound volume/surface area per week.

All trademarks acknowledged.

1.    Fraccalvieri M, Ruka E, Bocchiotti MA, Zingarelli E, Bruschi S. Patient’s pain feedback using negative pressure wound therapy with foam and gauze. Int Wound J. 2011;8(5):492-499.
2.    Fraccalvieri M, Zingarelli E, Ruka E, et al.Negative pressure wound therapy using gauze and foam: histological, immunohistochemical and ultrasonography morphological analysis of granulation and scar tissues. Second phase of a clinical study. Eur J Plast Surg. 2014;37:411-416.
3.    Henderson V, Timmons J, Hurd T, Deroo K, Maloney S, Sabo S. NPWT in everyday practice made easy. Wounds International. 2010; 1 (5): 1-6.
4.    Hurd T, Chadwick P, Cote J, et al. Impact of gauze-based NPWT on the patient and nursing experience in the treatment of challenging wounds. Int Wound J. 2010;7(6):448-455.
5.    Johnson S. V1STA® – A new option in Negative Pressure Therapy. In. Journal of Wound Technology. Vol 12008:30-31.
6.    Campbell PE, Smith GS, Smith JM. Retrospective clinical evaluation of gauze- based negative pressure wound therapy. Int Wound J. 2008;5(2):280-286.
7.    Birke-Sorensen H, Malmsjo M, Rome P, Hudson D, Krug E, Berg L, et al. Evidence based recommendations for NPWT: Treatment variables (pressure levels, wound filler and contact layer) – Steps towards an international consensus. J Plast Reconstr Aesthet Surg. 2011 Sep;64 Suppl:S1-16.
8.    Dorafshar A, Franczyk M, Gottlieb LJ, Wroblewski KE, Lohman RF.A prospective randomised trial comparing subatmospheric wound therapy with a sealed gauze dressing and the standard vacuum-assisted closure device. Ann Plastic Surg. 2012;69:(1):79-84.
9.    Rahmanian-Schwarz A, Willkomm LM, Gonser P, Hirt B, Schaller HE. A novel option in negative pressure wound therapy (NPWT) for chronic and acute wound care. Burns. 2012;38(4):573-7.
10.    Apelqvist J, Willy C, Fagerdahl A, et al. Negative pressure wound therapy. Overview, challenges and perspectives. J Wound Care. 2017;26(Suppl 3):S1– S113.
11.    Hasan MY, Teo R, Nather A. Negative-pressure wound therapy for management of diabetic foot wounds: A review of the mechanism of action, clinical applications, and recent developments. Diabet Foot Ankle. 2015;6:27618.
Important Safety Information


The information herein is intended for healthcare professionals. RENASYS is contraindicated in the presence of untreated osteomyelitis, exposed arteries/veins/organs/nerves, necrotic tissue with eschar present, malignancy in the wound, non-enteric and unexplored fistulas, and exposed anastomotic sites. Excessive bleeding is a serious risk associated with the application of suction to wounds, which may result in death or serious injury. For full product and safety information, please see the Instructions for Use.

Post-Acute NPWT Solution in the United States

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Intended for HCPs in the US only