Postoperative wound monitoring app can reduce readmissions and improve patient care

January 19, 2018, American College of Surgeons
WoundCheck is a HIPAA-compliant, user-tested iOS app that enables patients to transmit daily surgical wound images from their home to a clinician. Credit: Journal of the American College of Surgeons

A new smartphone app called WoundCare is successfully enabling patients to remotely send images of their surgical wounds for monitoring by nurses. The app was developed by researches from the Wisconsin Institute of Surgical Outcomes Research (WiSOR), Department of Surgery, University of Wisconsin, Madison, with the goal of earlier detection of surgical site infections (SSIs) and prevention of hospital readmissions. The study results appear as an "article in press" on the website of the Journal of the American College of Surgeons ahead of print.

SSIs are the most common hospital-acquired infection and the leading cause of hospital readmission following an operation. Due to the prevalence off SSIs, the WiSOR research team decided to see if postoperative wound monitoring could be effectively achieved by having upload photos through the WoundCare app and answer a few brief questions to gather information not easily captured through images.

"Patients cannot identify [infections] and frequently ignore or fail to recognize the early signs of cellulitis or other wound complications," study authors wrote. "This drawback leads to the common and frustrating scenario where patients present to a routine, scheduled clinic appointment with an advanced wound complication that requires readmission, with or without reoperation. However, the complication may have been amenable to outpatient management if detected earlier."

Forty vascular surgery patients were enrolled in the study. There was an overall data submission rate of 90.2 percent among participants, and submissions were reviewed within an average of 9.7 hours. During the study, seven wound complications were detected and one false negative was found.

"We set out to come up with a protocol where patients could become active participants in their care and allow us to be in closer communication and monitor their after they leave the hospital," said lead study author and general surgery resident Rebecca L. Gunter, MD. . "This approach allows us to intervene at an earlier time rather than waiting for patients to come back in after the problem has already developed past the point of being able to manage it on an outpatient basis."

Patients were enthusiastic about the app's ease of use and the reassurance they felt having their wounds regularly monitored. The nurse practitioners responsible for reviewing the submitted images attested to the value of the photos and patient satisfaction, although they also noted it was difficult to find time to review the submitted images on top of an already heavy clinical workload. Study authors note that the success and sustainability of a post-discharge wound-monitoring protocol requires a dedicated transitional care program and not simply adding a task to the current staff workload.

This protocol also has a cost-savings component, in addition to the patient safety and satisfaction aspects. Study authors note that SSIs are the most expensive hospital-acquired infection, costing an average of nearly $30,000 per wound-related readmission and an estimated $3-10 billion annually.

"If you could imagine saving the cost from the number of patients whose readmission you were able to prevent, that result could provide significant savings to the health system," Dr. Gunter said. Although capturing specific numbers related to cost-savings was not part of this study, Dr. Gunter said it is an important area of focus for future studies.

A limitation to telemedicine protocols that call for the use of smartphones is that not every patient has the necessary technology or knowledge to upload images on their own. The WiSOR research team addressed this issue by having participants undergo tailored training to learn to use the WoundCheck app. They provided each patient with an iPhone 5S and an accompanying visual reference guide to further assist in using the phone and app. Dr. Gunter said they were very successful in giving patients knowledge and access to technology so they could participate in the study. She said this is a model easily adaptable to other medical centers, whether through providing participants with a phone, having a rotating supply of phones at the hospitals for patients to borrow, or relying on a patient's personal device.

"We have demonstrated that a population of complex and high-risk patients, many of whom are older adults and novice smartphone users, can complete this protocol with high fidelity and satisfaction," the researchers concluded.

Explore further: Phone-based transitional care program has high engagement among surgical patients

More information: Rebecca L. Gunter et al. Feasibility of an Image-Based Mobile Health Protocol for Postoperative Wound Monitoring, Journal of the American College of Surgeons (2018). DOI: 10.1016/j.jamcollsurg.2017.12.013

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