Choice Of Pressure Relief Cushions

By Maryanne Goff


Pressure relief cushions are important for those who spend their time sitting in wheelchairs. These long periods of sitting cause compression of skin and tissue between bones and the surface of a chair, resulting in circulation problems. Use of these products can help to keep the skin healthy, reduce shear force and help with stability.

When skin and tissue are compressed between bone and the chair, the blood cannot circulate properly and oxygen and nutrient supply to the cells decreases. Weight bearing bones near the skin surface, like the buttocks, are particularly at risk. This may result in ulcers that can be very serious, leading to hospitalization and surgery. Shear force occurs when the skin and tissue are pulled in different directions, such as when an individual slides down in the chair.

A number of different factors must be taken into consideration when choosing the right cushion. It is important to have the input of a clinical professional in making the decision. How long the user spends in the chair, how much moving around takes place and other factors like incontinence and posture problems must all be considered.

The wheelchair and cushion must work together. There are many sizes and depth of cushions available. The correct one has to be chosen to ensure that when the individual is sitting on the cushion, the height is correct in relation to the armrests and the back of the chair.

There are many different types of materials used for these products. Foam, air, gel and water are all used for their ability to distribute pressure, allowing blood to circulate freely, limiting edema and enhancing healing. These materials all have different qualities with regard to stability, heat conduction, moisture absorption, weight and cost.

A foam cushion comes in many densities and may be cross cut or contoured to allow for greater conformity to body shape and movement. Memory foam models the shape of the body better than ordinary foam. Foam is quite inexpensive and easy to cut. This allows a therapist to experiment with shape, customizing a cushion for the needs of an individual. However, foam can become compressed and lose its shape quite easily.

An air floatation cushion supports the body with air. For example, it may consist of rows of small rubber balloons or it may channel air via pathways. A cushion like this is relatively lightweight and waterproof. There is also an air alternating variation that works with a pump, allowing cells to deflate and inflate. These products require regular maintenance to ensure proper inflation.

A gel cushion provides excellent weight distribution as it conforms to the shape of the body. It is very comfortable and it helps keep the surface temperature of the skin cool. A disadvantage is its weight as portability is important for users who frequently have to lift in and out of a wheelchair and a car.

The cost of pressure relief cushions can vary considerably, according to the materials with which they are made, covers, size and depth. It is worthwhile to purchase a product with proven performance over time. This may not be the cheapest option but durability, comfort and effectiveness should take precedence over cost.




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