By Stephen Beech via SWNS
A new voice analysis app predicts worsening heart failure three weeks before the onset of symptoms.
The app, used by heart failure patients at home, recognizes fluid in the lungs an average of 21 days before an unplanned hospitalization or escalation in outpatient drug treatment.
Study author Professor William Abraham, of The Ohio State University in the United States, said: "The current standard of care just isn’t good enough for keeping patients with heart failure well and out of the hospital.
“The system tested in this study was able to predict 80 percent of worsening heart failure in advance, compared to a 10 to 20 percent success rate for daily weight monitoring shown in previous studies.
"In the future, speech analysis, together with other clinical information, could be used to modify treatments before a patient’s condition deteriorates and thereby avoid hospital admission.”
He explained that in patients with heart failure, the heart does not pump blood around the body as well as it should. Fluid is not eliminated properly by the kidneys and the excess fluid builds up in the lungs or legs.
Lung congestion is a common cause of hospitalization, and can be life-threatening.
Currently, lung congestion is monitored by asking patients to weigh themselves every day and report any substantial gain. Patients are also requested to report worsening symptoms such as shortness of breath, needing to elevate the head at night to breathe comfortably and sleep, and swelling in the feet or ankles.
The study included 180 patients with heart failure taking guideline-recommended medications.
At the beginning of the study, the participants recorded five sentences on a standard smartphone using the voice analysis app.
During the study period, every morning before breakfast patients recorded the same five sentences using the app.
The app compared each day’s recordings with the original versions and alerted research staff when it detected lung congestion.
Professor Abraham said: “The system sets a baseline for each individual patient during a period of stability.
"It then detects changes in speech over time that indicate fluid in the lungs.”
The researchers examined whether the lung congestion alerts predicted heart failure events, defined as at least one worsening symptom which led to hospitalization or escalation in outpatient drug treatment. They did so by comparing the date of the alert with the dates of subsequent heart failure events.
“True alerts” were those issued within a 31-day window before the heart failure event. “False alerts” were those issued outside of the 31-day window prior to an event.
Professor Abraham noted that a “true alert” would continue to be issued daily until the heart failure event occurred.
He said: “In this study, the alerts were not acted upon by clinicians since the aim was to determine the diagnostic performance of the tool. In real life, notifications would be sent to the patient’s physician until it was responded to.
"Here we followed patients longitudinally for worsening heart failure events and then looked to see if there was an alert prior to that event – i.e. a ‘true alert’. If there was no alert then the system failed to predict the event. Alerts not followed by a worsening heart failure event were ‘false alerts’.”
During the study, patients provided recordings for an average of 512 days. A total of 49 heart failure events occurred in 37 patients, of which the app correctly predicted 80 percent and 20 percent were missed.
True alerts were issued an average of 21 days before worsening symptoms. Each patient received a false alert every 4.8 months on average, resulting in an average of 2.5 erroneous warnings each year.
Professor Abraham added: “In this community-based study, a voice analysis app was able to predict most cases of worsening heart failure well in advance, with very few false alarms.
"Weight gain and symptoms occur too late to allow medical interventions that keep patients out of the hospital.
"Future studies will investigate whether changing patient management following an alert, for example by increasing the diuretic dose to get rid of excess fluid, can prevent hospitalizations.”
The findings were presented at Heart Failure 2022, a scientific congress of the European Society of Cardiology (ESC) in Madrid, Spain.
Stories and infographics by ‘Talker Research’ are available to download & ready to use. Stories and videos by ‘Talker News’ are managed by SWNS. To license content for editorial or commercial use and to see the full scope of SWNS content, please email email@example.com or submit an inquiry via our contact form.
NASA grants 3D printing company $57.2 million to build towns on lunar surface
"Pushing this development forward with our commercial partners will create the capabilities we need for future missions."
NAVY aviators Saving Private Puppy
They want to bring the puppy home and make her the squadron’s mascot.
Should the holiday season last longer?
This story version has been formatted as an on-air script for broadcast outlets. See the original research story here. HALF OF...
Florida emergency services respond to explosive blaze at fireworks shop
By Barney Riley via SWNS Emergency services responding to a fire at a fireworks shop had to dodge missiles as...
Plant-based diet could lower risk of colorectal cancer by nearly a quarter
The team analyzed data from 79,952 men and 93,475 women from Hawaii and Los Angeles.
- Outer Space3 days ago
Wall-E-like robot to provide power on Moon by 2025
- Art3 days ago
Sir Ringo Starr selling life-size statues of his famous Peace and Love hand gesture
- Outer Space2 days ago
Photos capture the Moon photobombing the Sun
- Health2 days ago
Top reasons American seniors avoid going to the doctor
- Weddings3 days ago
Wedding photographer snaps couples tying knot on the slopes
- Diet2 days ago
Risk of heart disease could be slashed with one tiny life change
- Holidays2 days ago
World’s smallest nativity scene carved on speck of gold inside eye of a needle
- News2 days ago
Adolf Hitler’s bunker for sale