Rethinking hospital alarms

May 27, 2016, Acoustical Society of America

Hospital alarms are currently ranked as the "top medical technology hazard" within the United States. On average, there are about 480,000 patients in hospitals—each generating about 135 clinical alarms per day. But studies show that more than 90 percent of these alarms result in no action. Alarm errors—either alarms that sound and receive no response or alarms that fail to sound when they should —occur roughly 8 million times per day.

During the Acoustical Society of America's Spring 2016 Meeting, May 23-27, in Salt Lake City, Ilene Busch-Vishniac, an acoustical consultant, will present a model that predicts how often alarm errors will occur based on several recent studies of hospital alarms.

The error model she developed is rudimentary—either alarms or they don't.

"In each case, alarms reflect a medically urgent situation or they don't," she explained. "For each situation, the response is either appropriate or inappropriate. This means there are eight possible scenarios associated with alarms, so we can estimate how often each occurs and how often errors occur."

In current studies, "the fraction of alarm errors reported as adversely affecting patients is extremely low," said Busch-Vishniac. "But alarms often don't serve the purpose for which they're intended: to alert medical staff to urgent situations. Instead, alarms go off all the time and rarely indicate truly urgent situations. And while the focus has been on ensuring that the hospital staff responds to all alarms, studies show that it's more common for alarm errors to occur because alarms that should sound fail to do so. This means that responding to all alarms won't eliminate most alarm errors."

There's also concern that alarms within hospitals have a negative impact on patient recovery, she pointed out, although insufficient data is available at this time to really answer the question.

Since 2014, hospitals within the U.S. are required to develop and review their alarm management policies on a regular basis.

"Our work suggests that it's time to rethink alarm strategies entirely—with a goal of reducing the number of alarms to those that truly reflect urgent situations, while balancing the need to alert staff with the need to establish quieter hospital environments," she added.

Busch-Vishniac has outlined an "alarms of the future" research program she intends to pursue.

"The first task is to compare the medical outcomes of patients when alarms sound within their area vs. when alarms are intentionally muted and sent to staff via pagers or cell phones," she said. "This will help to establish whether alarms potentially harm patients, as well as save lives. We'll also explore when alarms should sound, which sounds should be used, and ways to make alarm systems more intelligent by combining information from multiple medical devices."

Her goal is to design optimum alarm systems for hospitals that can be integrated into hospital equipment within 20 years.

Explore further: Project reduces 'alarm fatigue' in hospitals by 80 percent

More information: Presentation #5aAA8, "Death by alarm: An error model of hospital alarms," by Ilene Busch-Vishniac will take place on Friday, May 27, 2016, at 9:50 AM MDT in Salon I. The abstract can be found by searching for the presentation number here:http://acousticalsociety.org/content/spring-meeting-itinerary-planner

Related Stories

Project reduces 'alarm fatigue' in hospitals by 80 percent

November 10, 2014
The sound of monitor alarms in hospitals can save patients' lives, but the frequency with which the monitors go off can also lead to "alarm fatigue," in which caregivers become densensitized to the ubiquitous beeping.

Hospital group says 'alarm fatigue' can be deadly

April 8, 2013
(AP)—Constantly beeping alarms in hospitals are being linked to patient deaths and other dangers in a new alert from the Joint Commission.

Modern monitoring systems contribute to alarm fatigue in hospitals

December 4, 2014
Jessica Zègre-Hemsey, a cardiac monitoring expert at the University of North Carolina at Chapel Hill, and her colleagues at the University of California San Francisco, revealed more than 2.5 million alarms were triggered ...

Hospital logs staggering 2.5 million alarms in just a month

October 22, 2014
Following the study of a hospital that logged more than 2.5 million patient monitoring alarms in just one month, researchers at UC San Francisco have, for the first time, comprehensively defined the detailed causes as well ...

Recommended for you

Juul e-cigarettes pose addiction risk for young users, study finds

October 19, 2018
Teens and young adults who use Juul brand e-cigarettes are failing to recognize the product's addictive potential, despite using it more often than their peers who smoke conventional cigarettes, according to a new study by ...

Adding refined fiber to processed food could have negative health effects

October 19, 2018
Adding highly refined fiber to processed foods could have negative effects on human health, such as promoting liver cancer, according to a new study by researchers at Georgia State University and the University of Toledo.

New hope for cystic fibrosis

October 19, 2018
A new triple-combination drug treatment being trialled at the Mater Hospital in Brisbane could increase the life expectancy of patients with cystic fibrosis.

Bug guts shed light on Central America Chagas disease

October 18, 2018
In Central America, Chagas disease, or American trypanosomiasis, is spread by the "kissing bug" Triatoma dimidiata. By collecting DNA from the guts of these bugs, researchers reporting in PLOS Neglected Tropical Diseases ...

Rapid genomic sequencing of Lassa virus in Nigeria enabled real-time response to 2018 outbreak

October 18, 2018
Mounting a collaborative, real-time response to a Lassa fever outbreak in early 2018, doctors and scientists in Nigeria teamed up with researchers at Broad Institute of MIT and Harvard and colleagues to rapidly sequence the ...

Self-lubricating latex could boost condom use: study

October 17, 2018
A perpetually unctuous, self-lubricating latex developed by a team of scientists in Boston could boost the use of condoms, they reported Wednesday in the journal Royal Society Open Science.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.