Smartphones show promise as electronic stethoscopes | Daily Mail

A mobile phone app which records a user’s heartbeat could pave the way for doctors to monitor cardiac patients remotely, new research suggests.

In a study led by King’s and Maastricht University, researchers analysed more than 5,000 heart sound recordings captured on the ‘Echoes’ app and ruled the quality was good enough it could be used by the general population.

Echoes, developed in collaboration with cardiac patients through the British Heart Foundation (BHF) and Evelina Children’s Heart Organisation (ECHO), and with experts at Cellule Design Studio, uses a smartphone’s inbuilt microphone to record heart sounds – users simply hold their phone against their chest, hit record, then save.

Once someone has saved a recording of their heart, it is added to a database for researchers to analyse for sound quality, along with anonymised health indicators provided by the users, to detect sound events and potential clinical markers.

Since launching in May 2021, Echoes has collected more than 100,000 heart sound recordings and the findings of this latest study, published in the European Heart Journal – Digital Health, conclude that sound quality is not affected by the phone version, nor by the user’s sex or body mass index (BMI).

“This research proves that mobile technologies are a viable way of recording heart sounds and that in the future, cardiac patients and doctors could use at-home recordings to check for existence or progression of heart conditions,” said lead researcher, Professor Pablo Lamata, Professor of Biomedical Engineering at the School of Biomedical Engineering & Imaging Sciences.

Echoes was designed to reduce the stigma and anxiety of cardiovascular conditions by giving people the opportunity to record their heart sounds from their mobile phone, and we have now learned that it can also become a tool to empower patient to manage their own conditions.

Professor Pablo Lamata

Researchers hope that in the future, any user (regardless of having a cardiac condition or not) will be able to benefit from learning about cardiac physiology while hearing their heart sounds through the app – or use Echoes as a meditative tool or to compare their heartbeat before and immediately after exercise.

This was initially published on the BMEIS news site.


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