When Kea Turner’s 74-year-old grandmother checked into Virginia’s Sentara Virginia Beach General Hospital with advanced lung cancer, she landed in the oncology unit where every patient was monitored by a bed alarm.
“Even if she would slightly rollover, it would go off,” Turner said. Small movements—such as reaching for a tissue—would set off the alarm, as well. The beeping would go on for up to 10 minutes, Turner said, until a nurse arrived to shut it off.
Tens of thousands of alarms shriek, beep, and buzz every day in every U.S. hospital. All sound urgent, but few require immediate attention or get it.
Intended to keep patients safe alerting nurses to potential problems, they also create a riot of disturbances for patients trying to heal and get some rest.
Nearly every machine in a hospital is now outfitted with an alarm—infusion pumps, ventilators, bedside monitors tracking blood pressure, heart activity, and a drop in oxygen in the blood. Even beds are alarmed to detect movement that might portend a fall. The glut of noise means that the medical staff is less likely to respond.
An ‘Epidemic Of Immobility’
In the past 30 years, the number of medical devices that generate alarms has risen from about 10 to nearly 40, said Priyanka Shah, a senior project engineer at ECRI Institute. A breathing ventilator alone can emit 30 to 40 different noises, she said.In addition to triggering bed alarms, patients who move in bed may set off false alarms from pulse oximeters, which measure the oxygen in a patient’s blood, or carbon dioxide monitors, which measure the level of the gas in someone’s breath, she said.
‘Cry Wolf Phenomenon’
Maria Cvach, an alarm expert and director of policy management and integration for Johns Hopkins Health System, found that on one step-down unit (a level below intensive care) in the hospital in 2006, an average of 350 alarms went off per patient per day, from the cardiac monitor alone.She said no international standard exists for what these alarms sound like, so they vary by manufacturer and device. “It’s really impossible for the staff to identify by sound everything that they hear,” she said.
The flood of alarms creates a “cry wolf phenomenon,” Cvach said. The alarms are “constantly calling for help. The staff look at them. They say ’that’s just a false alarm'—they may ignore the real alarm.”
Barbara King, an associate professor at the University of Wisconsin at Madison School of Nursing, who has interviewed patients about their experience with bed alarms, said patients find them “very restrictive.”
Seeking Solutions
Hospitals have turned to “clinical alarm management,” bringing in consultants to figure out how many devices have alarms, which go off most frequently and which are the most important for nurses to respond to. Hospitals are also installing sophisticated software to analyze and prioritize the constant stream of alerts before relaying the information to staff members.The U.S. market size for the management of clinical bed alarms, in hospitals and other settings, has grown from $21.4 million in 2016 to $37.4 million in 2018, according to an analysis by MarketsandMarkets. The firm projects the market size will quadruple to $155.5 million by 2023.
For ventilators, it estimates the U.S. market for clinical alarm management will quadruple from $19.9 million in 2018 to $80.2 million by 2023.
In Virginia, Kea Turner’s grandmother grew so frustrated with her bed alarm that she gave up on sleeping and stayed up late watching television during her hospital stay, said Turner, a researcher at the Moffitt Cancer Center in Florida who studies, among other things, patient safety.
Many hospitals, she said, don’t seem to have evidence-based strategies to reduce falls and, “in the absence of those, they’re using things like bed alarms,” she said, which “is not necessarily reducing falls risk and might actually be causing more harm.”
Meanwhile, some hospitals are trying to quiet the noise.
By customizing alarm settings and converting some audible alerts to visual displays at nurses’ stations, Cvach’s team at Johns Hopkins reduced the average number of alarms from each patient’s cardiac monitor from 350 to about 40 per day, she said.
But that’s just one device in one unit; other devices and types of care require different customized settings.
Still, Cvach said, “a lot more can be done.”
Dr. Fred Buckhold, an internist at SSM Health St. Louis University Hospital in Missouri, said one patient’s experience spurred his hospital to reduce reliance on bed alarms.
“I feel like I’m in jail,” she protested, Buckhold said. “I can’t sit up or go to the bathroom without them coming after me.”
“Did the bed alarm help her at all?” Buckhold reflected in a recent interview. “It just made her want to kill us.”