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Smart Bed Sensors Embedded in Hospital Mattresses Could Prevent Bed Sores

By HospiMedica International staff writers
Posted on 12 Aug 2022
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Image: Smart bed sensors embedded in hospital mattresses could stop pressure sores (Photo courtesy of University of South Australia)
Image: Smart bed sensors embedded in hospital mattresses could stop pressure sores (Photo courtesy of University of South Australia)

Hospitals currently use weight-based sensors or cameras installed in the room to monitor patients for bed sores, although both have limitations. Now, tiny smart bed sensors embedded in hospital mattresses could put an end to painful and potentially life-threatening pressure sores, thanks to a new technology.

Scientists at the University of South Australia (Adelaide, Australia) have designed minute optical fiber sensors, which can be attached to the upper surface of a mattress to monitor movement and record heart and respiratory rates. The unobtrusive sensors can detect when a hospital patient turns over, leaves a bed, or just remains motionless, picking up their breathing. Nurses can therefore be remotely alerted if a patient has not moved within a couple of hours, prompting them to adjust the patient’s position.

Unlike the sensors that many people wear on their wrists to monitor physical activity and physiological signs, the optical fiber sensors are embedded in the same space as a person, but not on them physically. The optical fiber sensors are sensitive enough to record heart and respiration rates and can detect whether a person is in the bed, even if they remain stationary for long periods. The technology could significantly relieve the burden on hospital staff having to constantly monitor patients for pressure sores, according to the scientists.

“Existing weight-based hospital sensors cannot predict when a patient leaves the bed until their feet touch the floor, leaving little time for nursing staff to respond in the event of a fall. Also, there are privacy issues with camera-based technology,” said lead researcher Dr. Stephen Warren-Smith. “Respiration rates are often the first sign that a patient is deteriorating. This normally requires devices to be attached to the patient, either on the chest, as a mask on the face, or ventilator. These can be restrictive and sometimes inappropriate in an aged care setting.”

“Monitoring vital signs continuously, unobtrusively and cheaply via the mattress-embedded sensors is a far better solution for both patient and nurse,” added Dr. Warren-Smith.

Related Links:
University of South Australia 

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