St. Francis Medical Center Implements Wireless Patient-Wearable Sensor as a Tool to Reduce Hospital-Acquired Pressure Injuries

Trenton, NJ—Patients with impaired mobility are especially susceptible to pressure injuries, sometimes called bed sores. These painful injuries develop when there is unrelieved pressure to the skin, reducing blood flow to the area.

The incidence of pressure injuries in hospital settings has continued to rise. Each year, it’s estimated that 2.5 million patients in U.S. acute-care facilities suffer from pressure injuries, according to the Agency for Healthcare Research and Quality. What’s more, patients who develop pressure injuries in the hospital are more likely to have longer stays, a higher risk of death and readmission within 30 days of discharge.

To help improve patient safety and clinical outcomes, Trinity Health, parent organization of St. Francis Medical Center, has provided St. Francis with a $269,200 grant to replicate the Smith+Nephew LEAF Patient Monitoring System* that was first piloted, with great success, by a sister hospital within Trinity Health. The system is manufactured by Smith+Nephew.

Maria Sbarro, BSN, RN, CWCA, wound care coordinator at St. Francis, said, “The LEAF Patient Monitoring System is a great tool to help ensure timely and accurate repositioning of our high-risk patients. It also saves staff time.” 

Hospitals utilizing the LEAF Sensor technology have reported significant improvements in adherence to patient turning protocols and reductions in hospital-acquired pressure injuries by as much as 85 percent.

The lightweight, disposable LEAF Sensor is placed on the patient's chest. Its triaxial accelerometer then automatically measures the patient’s position, orientation and activity and wirelessly transmits the data to monitoring stations easily viewed by clinical staff.

The LEAF System provides visual alerts to staff so patients are repositioned according to their individually prescribed turning schedule, and confirms adequate pressure reduction is achieved with each turn. The sensor registers independent patient movement and automatically adjusts the schedule accordingly, saving staff time when patients reposition on their own.

Alerts can also be set to help prevent repositioning patients on an existing wound or an area of concern. In addition, the system provides various levels of reporting to help with root cause analysis and improve care delivery.

Traditional measures for preventing pressure injuries include daily skin inspections, repositioning a patient every two hours, padding bony prominences and utilizing specialized mattresses to reduce/redistribute pressure.

However, even with traditional measures, some patients remain at-risk for pressure injuries. These include:

  • Patients over the age 70 (due to aging skin, greater risk for hardening of the arteries and poor circulation)
  • Patients with multiple medical diagnoses
  • Patients with health conditions such as paralysis after stroke or other diseases that make mobility difficult and/ or affect sensation (the ability to feel pressure)
  • Patients with poor nutrition or malnourishment
  • Patients with type 2 diabetes, who have damage to their blood vessels that makes blood flow slow and obstructed

“I am very excited we have been given this opportunity to implement the LEAF Sensor system at St. Francis,” said Sbarro. “It will help improve patient safety and care.”

*Trademark of Smith+Nephew

About St. Francis Medical Center

Based in Trenton, New Jersey, St. Francis Medical Center, a member of Trinity Health, has served the South Jersey community for nearly 150 years. St. Francis is an acute care teaching hospital most noted for its Cardiac Surgery program and for having the first accredited Stroke Center in Mercer County. St. Francis earned the 2020-2021 U.S. News & World Report High-Performing Hospitals ranking for Heart Failure as well as COPD. St. Francis has also earned the 2020 American Heart Association’s Get With the Guidelines Stroke-Gold award for four consecutive years, and a Get With The Guidelines Resuscitation Silver Award for the treatment of patients having cardiac arrest in the hospital. St. Francis offers a School of Radiologic Technology, as well as a School of Nursing, and a Medical Residency program. St. Francis’ partner in care is LIFE St. Francis (Living Independently For Elders), a Program of All-Inclusive Care for the Elderly (PACE) based in Bordentown, NJ. For more information, visit

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