The end of stethoscope?

11/12/2015
Photo: doctor using HeartBud

David Bello, M.D., listens to the heart of a patient at Orlando Health using a new device called HeartBuds, a smartphone and an app; © Orlando Health

The iconic stethoscope we've become accustomed to seeing draped around the necks of doctors and healthcare providers may someday be replaced by smartphones and a new portable device, called HeartBuds, that is slightly larger than a quarter.

"They not only detect sounds inside the body just as well - or better - than traditional stethoscopes, but they are more sanitary," said David Bello, MD, department chief of cardiology at Orlando Health, and developer of HeartBuds. "And because they incorporate smartphone technology, we can now record, store and share those sounds as well. This could change the way we approach patient exams in the future."

With HeartBuds, doctors use a small, portable plastic listening device shaped much like the head of a traditional stethoscope. Instead of being attached to a Y-shaped tube that feeds into the doctor's ears, however, this device is plugged into a smartphone.

When the app is activated, sounds from the hand-held device can be played through the smartphone speaker and images appear on the screen showing rhythmic blips that correspond with each sound. Until now, only those wearing the stethoscope could hear what was taking place inside the body, but with this technology health care providers can control the volume, listen to and discuss sounds with patients in real time, and record various sounds for future reference.

"The technology is great, but we wanted to see how our device actually fared against more traditional stethoscopes," said Julio Schwarz, a cardiologist at University of Florida Health who co-authored a recent clinical trial conducted at Orlando Health. "So we put them to the test."

In all, doctors examined 50 patients and compared the performance of HeartBuds to two FDA-approved class I and class II stethoscopes, as well as a commonly used disposable model.

Results of the study showed that the HeartBuds smartphone-based device performed just as well as the more expensive and more commonly used class I and class II stethoscopes in detecting heart murmurs and carotid bruits, which are sounds in the neck that indicate moderate to severe blockage of the carotid artery.

However, experts found that the disposable stethoscope model they tested missed the presence of heart murmurs 43 percent of the time, and missed carotid bruits up to 75 percent of the time.

"That's very disconcerting," said Valerie Danesh, RN, PH.D, the research and clinical grants manager at Orlando Health and study author. "Many facilities have started using disposable models after several studies, particularly overseas, showed there can be a 30 to 40 percent potential risk for transmitting harmful bacteria through stethoscopes," she said. "These findings may cause some to reconsider that practice."

"Because the HeartBuds device doesn't have earpieces, we no longer have to worry about that," said Arnold Einhorn, MD, cardiologist and co-medical director of Orlando Health Heart Institute and HeartBuds developer. "This device is much less expensive to produce and offers a safer alternative to both traditional and disposable models without sacrificing sound quality," Einhorn said.

COMPAMED-tradefair.com; Source: Orlando Health

More about HeartBud at: www.orlandohealth.com