Air Mattresses
Choosing the Right Air Mattresses
Alternating air-cell mattress replacement systems are specialised medical beds that continuously shift air pressure between chambers to relieve and protect vulnerable skin. They are essential for patients with higher pressure-injury risk, delivering dynamic support that regular foam mattresses cannot provide. By cycling pressure, these systems reduce tissue deformation and promote healthy blood flow, helping to prevent painful pressure ulcers. Choosing the right alternating system ensures both safety and comfort for the most demanding clinical needs.
Types of Air Mattresses
A classic configuration that alternates pressure between two air chambers across the entire mattress surface. Ideal for standard high-risk patients, it provides reliable pressure redistribution with a straightforward pump system.
Three air cells are arranged so that one cell inflates while the other two deflate, creating a more nuanced pressure shift. This model suits patients requiring finer micro-climate control and is often paired with advanced auto-setting pumps.
Four chambers cycle in a one-in-four pattern, delivering the most frequent pressure changes for very high-risk individuals. The rapid alternation helps manage severe skin integrity concerns.
Engineered for heavier users, these systems feature reinforced air cells and higher safe working loads. They maintain the same alternating logic while supporting up to 350 kg, making them suitable for bariatric care environments.
Classified as Very High Risk under Australian therapeutic standards, these mattresses combine high-capacity cells with dual compressors and enhanced clinical features like HeelCair zones. They are the premium choice for patients at the greatest risk of pressure injury.
Key Features to Consider Before Buying
The mattress can operate on 2-cell, 1-in-3 or 1-in-4 alternating cycles, each providing a different frequency of pressure shift to match the patient's skin risk level.
Models use either an Alternating Pressure Auto-Setting pump that adjusts cycles automatically, or a Self-Setting pump that lets clinicians manually set the cycle and pressure levels.
A Quick-Twist CPR valve allows rapid deflation of the entire mattress in an emergency, facilitating swift patient access and safe airway management.
Some models include a built-in battery pack that provides several hours (commonly 3-5) of uninterrupted operation during a power outage, keeping the alternating cycle running. Always check the individual product's spec sheet, as not every unit includes a battery backup.
HeelCair or disconnectable heel cells focus pressure relief on the heel area, a common site for ulcer development, while allowing clinicians to isolate the zone if needed.
Genuine medical-grade alternating air mattresses are registered on the Australian Register of Therapeutic Goods (ARTG), confirming they meet national medical-device safety and performance standards. Always check the ARTG number for the specific model before purchase.
Look for compliance with recognised standards such as IEC 60601-1 for medical electrical safety and BS7175 Crib 5 for fire resistance - reputable alternating air mattresses will list these certifications, giving clinicians confidence in safe, reliable operation.
Frequently Asked Questions
Alternating pressure continuously redistributes load by inflating and deflating air cells, reducing sustained pressure on any one spot. This cyclical movement improves micro-circulation and lessens tissue deformation, which are key factors in preventing pressure ulcers. The frequency and pattern of the cycle can be matched to the patient's risk level for optimal protection.
The Quick-Twist CPR valve provides an emergency deflation mechanism that empties all air cells within seconds. It is used during resuscitation or any situation where rapid patient access is required, such as transferring the patient or performing urgent medical procedures.
If the mattress has a battery backup, it will continue alternating for 3-5 hours, maintaining pressure relief until power is restored. Models without a battery will lock in their last pressure state, and clinicians can manually deflate using the CPR valve if immediate access is needed.
An ARTG number indicates that the device has been evaluated and approved by the Australian Therapeutic Goods Administration. It confirms compliance with rigorous safety, performance and quality standards, giving clinicians confidence that the mattress meets national medical-device regulations.
High-Risk mattresses are suitable for patients with moderate pressure-injury risk, while Very High-Risk systems target those with severe or chronic skin compromise. Consider the patient's history of ulcers, mobility level, and the presence of additional risk factors such as diabetes or spinal injury. Very High-Risk models also often include dual compressors and specialized heel-zone technology for added protection.
Dual compressors provide redundancy, ensuring continuous alternating cycles even if one motor fails. They are recommended for Very High-Risk patients or for critical care settings where uninterrupted pressure relief is essential. For most high-risk patients, a single-compressor system with reliable battery backup is sufficient.