SOMERVILLE, Mass. (June 29, 2017)—Podimetrics, Inc., a medtech and services company focused on the early detection and prevention of diabetic foot ulcers (DFU), announced today the publication of a landmark study in the July issue of Diabetes Care. Results demonstrate that the Podimetrics SmartMat detected as many as 97 percent of developing nontraumatic plantar foot ulcers on average five weeks before they presented clinically. Importantly, 86 percent of patients used the mat at least three times per week and 88 percent of respondents reported it being easy-to-use, suggesting that patients readily accept this practical, new monitoring technology.
“The Podimetrics Remote Temperature Monitoring System could have huge benefits for patients with diabetes who are at high risk by significantly reducing morbidity and mortality associated with diabetic foot ulcers, which could also lead to improvements in resource utilization,” said Dr. Robert Frykberg, Chief of the Podiatry Section in the Dept. of Surgery at the Carl T. Hayden Veterans Affairs Medical Center and professor at the University of Arizona College of Medicine, Phoenix, and lead investigator.
“These data reinforce our belief that the Podimetrics Remote Temperature Monitoring System, which consists of a wireless SmartMat for the home and a full monitoring and notification service, may allow earlier detection of DFU and significant improvements in care,” said Jon Bloom, MD, CEO of Podimetrics. “When we developed our system, it was clear that patients wanted an easy-to-use, in-home solution. This study demonstrates that patients find the Podimetrics SmartMat easy-to-use and that 86 percent of the population used it at least three times per week on average, which is critical for adherence and ultimately achieving ongoing prevention of DFU and its devastating complications.”
Study Design and Results
The study was a 34-week, multi-center evaluation of the Podimetrics Remote Temperature Monitoring System™ in 129 participants with diabetes and prior DFU. The primary outcome of interest was development of nontraumatic plantar DFU, and the primary efficacy analysis was the accuracy of the Podimetrics SmartMat™ for predicting the occurrence of DFU over several temperature asymmetry thresholds.
Of the 129 participants who contributed evaluable data to the study, a total of 37 (28.7%) presented with 53 DFU (0.62 DFU/participant/year). At a temperature asymmetry threshold of 2.22°C, which is the standard threshold used in previous plantar thermometry studies, the system correctly identified 97% of observed DFU, with an average lead time of 37 days. Increasing the temperature threshold to 3.20°C decreased sensitivity to 70% but reduced the false-positive rate from 57% to 32% with approximately the same lead time of 35 days. Approximately 86% of the cohort used the system at least 3 days a week on average over the study.
“The false positive rate observed in this study was not surprising or concerning, “continued Dr. Frykberg. “This is particularly true given that the value of preventing a foot ulcer and its complications far outweighs the nuisance factor of a false alert. In a real-world setting, when a doctor gets a notification that a patient has a hotspot, the patient will be advised to reduce physical activity for a period to let the developing wound heal or may be asked to come in for a visit in serious cases. Even at the most sensitive setting presented in the study, these results translate to only 3.1 total notifications to the physician and patient per year, including all true and false positives.”
The Podimetrics Remote Temperature Monitoring System
The Podimetrics Remote Temperature Monitoring System consists of a wireless SmartMat for the home and a monitoring service that notifies patients and clinicians when signs of inflammation may be developing. To use the system, a patient stands on the mat for 20 seconds per day at home. Patient data is sent instantly to the cloud, where the Podimetrics system automatically measures the temperature difference between the feet at various locations looking for a possible persistent asymmetry, or hotspot. It has been well established that these hotspots strongly correlate with the eventual development of a foot ulcer. If a developing hotspot is detected, the health care provider is notified based on their custom protocol. From there an intervention is planned by the physician. Most interventions require a patient to stay off his/her feet while the foot heals itself. If the readout is persistent or more concerning, the patient may visit their doctor to take more aggressive preventative steps.
Visit podimetrics.com for more information.
