I + E = Pressure Redistribution

23/03/2016 12:45:35

In this post, we look at immersion and envelopment properties of polyurethane-coated fabrics, and how they can help to reduce the development of avoidable pressure ulcers...

I is for Immersion
Immersion is defined as, ‘Depth of penetration (sinking) into a support surface’. [1]
The greater the extent of the sinking into the support surface the greater the opportunity to redistribute the pressure.
E is for Envelopment
‘The ability of a support surface to conform, so to fit or mould around irregularities in the body’ [2]
Envelopment is a key player in what happens next. The stretch of the fabric is vital to the successfulness of the envelopment. 
Poor envelopment is caused by non-stretch covers which can cause hammocking. This creates a focus of pressure, which increases the risk of pressure ulcers developing. Hammocking is shown in the ‘bad’ section of the envelopment diagram.
High stretch covers redistribute the pressure, therefore the more contact the body has with the support surface the more the pressure is redistributed.
Why is it important for pressure ulcer prevention?
Immersion and envelopment combined are fundamental properties of a support surface. The intended outcome is to re-distribute pressure around the body which in turn helps to prevent tissue deformation. Without this pressure is retained in one place.
How Dartex can help
Dartex PU - coated fabrics have many valuable product attributes. Stretch behaviour of the fabric is very important. Dartex can help by providing the right fabric to maximize your products performance. By matching the stretch properties of the fabric to the support surface the patient support surface performance is optimised.
[1] http://www.npuap.org/wp-content/uploads/2012/03/NPUAP_S3I_TD.pdf
[2] http://www.npuap.org/wp-content/uploads/2012/03/NPUAP_S3I_TD.pdf

Subscribe to updates

Latest Dartex Blogs Subscribe to the Dartex Blog