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Pressure ulcers are a serious problem affecting over a million patients every year. These ulcers often occur when patients have limited mobility and cannot change positions in bed on their own. Eventhough there are accepted guidelines for attending and repositioning high-risk patients, the rate of pressure ulcers continues to rise . This paper presents a wearable, wireless vital sign monitor capable of continuously measuring the duration and orientation of a patient’s posture throughout . Patient posture is determined using a tri-axial accelerometer attached to a patient’s torso. A set of algorithms are used to process the accelerometer signals to adaptively identify accelerometer alignment on the patient, and classify patient orientation and enables alerts to be sent to the caregiver when a patient turn is due in accordance with the protocol adopted by the hospital. A novel method to address the need for improved pressure ulcer prevention is presented. The patient’s position is continuously monitored and the turning procedure carried out is logged and updated on the hospital’s cloud system, thereby enabling centralized monitoring. Under a controlled setting, system was able to continuously monitor patient’s position and can accurately detect standard patient positions. Keywords—pressure ulcers , repositioning , wearable , tri axial accelerometer , cloud system

A PROACTIVE SYSTEM TO PREVENT PRESSURE ULCERS ACQUIRED VIA PROLONGED HOSPITALIZATION