Are Pressure-Redistributing Mattresses Necessary?
How to Choose One for a Bedbound Patient
A complete guide to who may need a pressure-redistributing mattress, the common types available, and how to select an appropriate option, prepared by the KIN registered nursing team.
In brief:People who cannot reposition themselves or have substantially limited mobility should be assessed for a pressure-redistributing support surface. Existing pressure injuries can be painful and difficult to treat, so prevention should begin early and be based on individual risk.
A pressure injury—also called a pressure ulcer or bedsore—is localized damage to the skin and/or underlying tissue, usually over a bony prominence, caused by pressure or pressure combined with shear. It is common in people with limited mobility, but its presence does not by itself prove that home care is inadequate. KIN reports that among patients seekinghome physical therapysome already have a pressure injury when care begins; this is an internal KIN observation rather than a population estimate.
Prevention usually involves a combination of regular skin assessment, individualized repositioning and mobility, moisture and nutrition management, and an appropriate pressure-redistributing support surface. This guide explains how mattress options may be considered.
What Is a Pressure Injury, and How Serious Can It Be?
In brief:Pressure injuries result from sustained pressure or pressure combined with shear. They may begin as persistent skin discoloration and can progress to deeper tissue damage. Prevention includes risk assessment, pressure redistribution, skin care, nutrition, mobility, and individualized repositioning.
Pressure injuries commonly occur over bony areas such as the sacrum, hips, heels, and elbows. Tissue tolerance varies, and there is no single number of hours after which injury always begins. Risk depends on pressure intensity, shear, moisture, circulation, sensation, nutrition, mobility, and the support surface.
Stage 1
Intact skin with non-blanchable redness or discoloration. Relieve pressure and arrange clinical assessment, especially if the change persists.
Stage 2
Partial-thickness skin loss with exposed dermis, which may appear as a shallow open wound or blister. Appropriate wound and pressure-relief care is needed.
Stages 3–4
Stage 3 involves full-thickness skin loss; Stage 4 extends to deeper structures and may expose or directly involve muscle, tendon, cartilage, or bone. Both require prompt clinical assessment and a treatment plan.
KIN nursing-team reminder:Deep pressure injuries may require prolonged treatment and substantial resources. Early risk assessment and prevention are generally less burdensome than treating an established wound, but no single product can prevent every pressure injury.
How Does a Standard Patient Mattress Differ From a Pressure-Redistributing Mattress?
In brief:A standard mattress may not have tested pressure-redistribution characteristics. A pressure-redistributing support surface is designed to improve immersion, envelopment, or active pressure relief and reduce sustained loading over vulnerable areas. Selection should follow the patient’s assessed risk and the manufacturer’s specifications.
| Comparison point | Standard patient mattress | Pressure-redistributing support surface |
|---|---|---|
| Pressure management | May provide basic support without specialized pressure-redistribution performance | Designed to redistribute pressure through reactive or active features |
| Pressure-injury risk management | May be insufficient for a person assessed as being at risk | Can help reduce risk when used as part of a complete prevention plan |
| Comfort and support | Varies by model and condition | Selected for immersion, envelopment, stability, microclimate, and individual needs |
| KIN rental price/month | Included in selected bed packages | Additional THB 2,000/month |
| May suit | People who are mobile and assessed as low risk, subject to clinical review | People with reduced mobility or other assessed pressure-injury risk factors |
KIN team observation:A pressure-redistributing mattress is a clinically relevant support surface—not a luxury—when a person is assessed as being at risk. The appropriate surface should be chosen according to risk, body size, comfort, mobility, skin condition, existing wounds, and the care environment. Rental and wound-care costs should be compared using current information rather than a fixed multiplier.
What Types of Pressure-Redistributing Support Surfaces Are Available?
In brief:Common options include reactive pressure-redistributing foam, active alternating-pressure air systems, and other reactive surfaces such as air, gel, or fluid-based designs. Foam is often a practical first option for many at-risk people, but no single type is best for everyone. Choice should be based on clinical risk, comfort, mobility, existing wounds, microclimate, power availability, and the home environment.
1. Pressure-Redistributing Foam Mattress
These mattresses use specialist foam and may include castellated or contoured sections to improve immersion, envelopment, airflow, stability, and pressure redistribution. They are widely used in hospitals, nursing facilities, and home care.
Advantages
Quiet, generally easy to maintain, does not require a pump, and may be suitable as a first support surface for many people at risk
Limitations
Does not replace repositioning, skin checks, moisture management, or other preventive measures; the schedule should be individualized rather than fixed at two hours for everyone
2. Active Alternating-Pressure Air Mattress
An electric pump changes pressure across air cells in cycles. These systems may be considered when a person has moderate or high risk, an existing pressure injury, or needs that are not adequately met by a reactive foam surface. Selection and settings should follow clinical assessment and manufacturer instructions.
Advantages
Provides active pressure redistribution and may be appropriate for selected higher-risk or more complex cases
Limitations
Requires electricity and pump maintenance; noise, vibration, transfer stability, power failure, and correct settings must be considered
3. Other Reactive Surfaces, Including Gel or Fluid-Based Designs
Gel, fluid, reactive-air, low-air-loss, and other specialist surfaces have different performance characteristics. They may be useful in selected situations, but weight, maintenance, heat and moisture management, transfer stability, evidence, and home practicality should be assessed.
KIN team recommendation:For many people at risk, a clinically appropriate pressure-redistributing foam mattress is a reasonable first option. Consider a different or active surface when risk is moderate or high, a pressure injury develops despite the current surface, comfort or microclimate is inadequate, or the clinical team identifies another need.
Who May Need a Pressure-Redistributing Mattress?
In brief:Use a structured clinical risk assessment rather than a fixed rule based only on hours in bed. People who cannot reposition independently, have substantially limited mobility, reduced sensation, poor circulation, fragile skin, moisture exposure, poor nutrition, or an existing pressure injury may need a pressure-redistributing support surface promptly.
Often indicated after assessment
- Bedbound people who cannot reposition independently
- People in the early phase afterStrokestroke
- People after major surgery with limited mobility
- People whose body size or weight distribution increases pressure-management needs
- Frail older adults with fragile skin
- People with diabetes, vascular disease, reduced sensation, or impaired circulation
May not require a specialist surface
- People who reposition independently and are assessed as low risk
- Short-term recovery with good mobility and no significant risk factors
- People who walk and transfer independently throughout the day
- Intact skin and no clinically significant pressure-injury risk factors after assessment
A practical principle:If a person spends prolonged periods in bed and has limited ability to reposition, arrange a pressure-injury risk assessment early rather than waiting for visible redness. Deep tissue changes can precede obvious surface signs, but a mattress choice should still be individualized.
Mercury 15 cm — A Pressure-Redistributing Mattress Selected by KIN
In brief:The DHG Dyna-Form Mercury is a 15 cm specialist foam mattress manufactured in the United Kingdom and designed for users assessed as being at high risk of pressure-ulcer development. The source lists KIN rental at THB 2,000/month and a 12-month rate starting at THB 1,500/month; confirm current pricing and terms before publication.
KIN selected the DHG Dyna-Form Mercury 15 cm for rental because its castellated CME foam, side-wall construction, multi-stretch vapour-permeable cover, and 15 cm depth are designed for pressure redistribution, transfer stability, comfort, and infection-control needs in hospital, nursing, and home-care environments. Suitability still depends on individual assessment.
15 cm foam depth
Specialist castellated foam designed for pressure redistribution
Made in UK
DHG product manufactured in the United Kingdom for hospital, nursing, and home-care environments
THB 2,000/month
12-month rental from THB 1,500/month
Home delivery
Free delivery for rentals of three months or more, according to the source terms
The Mercury mattress may be rented separately or combined with a patient-bed package on theKIN Medical Equipment Rental page.The nursing team can advise which bed frame and mattress combination may be compatible and appropriate.
“When advising families, the KIN team asks whether the patient is using an appropriate pressure-redistributing support surface. An established pressure injury can cause pain and complicate rehabilitation, so early assessment and prevention are important. The mattress is one part of a broader prevention plan.”
Orathai Boontuang, RN
Branch Manager, KIN Sukhumvit 107 | KIN Registered Nurse
Contact Us | Free Initial Assessment
Not sure which support surface is suitable? The KIN nursing team can assess mobility, skin condition, current wounds, body size, care environment, and caregiver needs before making a recommendation.
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Frequently Asked Questions
Answered by the KIN medical and registered nursing team
Branch Manager, KIN Physical Therapy Hospital Sukhumvit 107 | Registered Nurse, Licence No. 5311192883
Written and reviewed by: KIN Rehabilitation & Homecare Academic Team | Reviewed by the KIN medical and multidisciplinary team | Last updated: June 2026
This article is for educational purposes only and is not individualized medical advice. Consult the treating physician, nurse, or rehabilitation team before making decisions.