How To Choose Pressure Relief Cushions

By Maryanne Goff


Pressure relief cushions are an important tool for helping individuals required to sit in wheelchairs for long periods of time. They help to maintain the health of the skin by distributing pressure in a variety of ways. They also help give postural stability and prevent shear force.

Lack of circulation means that supply of nutrients and oxygen to the cells decreases. This in turn means that ulcers may form. Once these ulcers have formed, they may be hard to treat so it is better to prevent them. Shear force occurs when a part of the body tries to move but the surface of the skin remains fixed, pulling skin and tissue apart. This may happen when an individual slips forward 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 size and construction of the wheelchair must be taken into consideration when purchasing a cushion. This will help to determine what depth and size of cushion is required. Once the user is sitting on the cushion, the armrests should be at the correct height.

Different materials like air, foam and gel are used in the manufacture of these products. These materials are used because they conform to the shape and movement of the body, allowing for distribution of pressure. Qualities like weight, heat conduction, stability, durability and cost vary from product to product.

A foam cushion is one of the least expensive options and it comes in a range of densities and varying degrees of memory. If the foam is cross cut, contoured or convoluted, it allows greater conformity so that the surface moves with the user. As it is relatively inexpensive and easy to cut, a therapist can experiment with shapes without incurring too much expense. On the downside it does wear down more quickly than other materials, losing its shape and becoming compressed.

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.

Sores and ulcers are more likely to develop when skin is damp, so a cushion that wicks moisture away from the body is a good idea, especially for people who tend to get hot easily. Gel is useful for this reason and it is also comfortable, conforming well to body shape and providing good weight distribution. One disadvantage is that it is heavy, making it unsuitable for users who need a light weight for easy portability.

Pressure relief cushions vary in cost, depending on materials used and complexity of construction. Various facts need to be considered when making a purchase including durability, ease of cleaning, comfort and effectiveness. A more expensive item may be more cost effective in the long term.




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