According to MacLeod, hospitals no longer hang IV bags on racks, which feed medicine into the patient's bloodstream through gravity. Instead, they use mechanical pumps that can be programmed to regulate the flow of medicines or fluids. Due to the high cost of the IV pumps, however, Hamilton's acute-care center does not station one at each bedside. Instead, employees wheel the pumps to locations throughout the nursing ward that need the devices. As a result, it sometimes takes nurses time to locate an available pump—time they could otherwise use to administer care.
For the pilot, the staff has tagged approximately 200 of these pumps, as well as diagnostic equipment and other high-value mobile assets in the nursing ward. Thirty-four antennas have been deployed throughout the ward, connected to four interrogators via multiplexing devices provided by LRNI. The antennas
read RFCode 303 MHz active tags as they pass by, while a standalone software program shows the nursing staff the location of the tagged asset, either by room number or—in cases where the assets are in a very large room—by a zone within that room.
Once the hospital staff determined the level of granularity it wanted for tracking the assets, Sood says, lab engineers tested
RFID tags from a number of different technology vendors before deciding on RFCode's active tags and readers. Since the onset of the project, Sood and his team have also worked with Hamilton's IT department director and some of his staff, who helped design the system.
The pilot started just two weeks ago, says Sood, so it is too early to provide any metrics on
tag readability or overall performance. To that end, the hospital will continue to test the current system until April. Sood says MRAL might also work with the hospital to test other RFID technologies—specifically, tags that transmit data over
Wi-Fi—and compare the results of the two systems.
Primarily interested in developing a business case for using RFID, MacLeod says, the hospital will examine the technology's impact beyond just this particular asset-tracking pilot. MRAL and Deloitte are working with MacLeod and his team to develop the business case for using RFID as an enabling technology for better business intelligence solutions in hospitals. "The upfront cost of putting in an RFID system is major, and you may not be able to fully justify that on just
asset tracking," he explains. "Our intent is to look beyond that, to see what business case would come from further applications of the technology, such as infant tracking or tracking adult patients with wandering problems."
MacLeod says monitoring the whereabouts of hospital staff, through RFID-enabled personnel badges, is another area the hospital might consider. However, Sood notes, any testing of such an application would occur only after MRAL collaborates with hospital personnel to work through any related privacy issues. He adds that his lab plans to convene a team of professionals from different disciplines, including McMaster's public-policy departments, the hospital's labor union, RF engineers and others. This team will address privacy concerns with respect to personnel location monitoring.