Embedding ECG sensors to a supermarket cart (trolley) handle as ‘first-line’ screening for atrial fibrillation

June 28, 2023 | by

Not coming soon to a supermarket near you, but an interesting test at Sainsbury’s in Liverpool. The 2022 study by a team from Liverpool John Moores University (LJMU) was designed to move atrial fibrillation (AF) screening closer to everyday routines. At least one weekly routine is to go to the supermarket.

In the ‘SHOPS-AF’ study first/proof-of-concept phase designed in 2022, the LJMU team installed a single-lead ECG designed by them, the MyDiagnostick, into the cart (US)/trolley (UK) handles at four local Sainsbury’s with pharmacies. This idea is similar to the pulse monitor handle that you find in most sport treadmills. The study over the past two months recruited 2,155 adult shoppers who used the carts and placed hands on the equipped handles over the 60-second monitoring time required to get an accurate ECG. About 220 were ‘red-lighted’–an irregular heartbeat was picked up by the sensor in the handle that alerted the in-store pharmacist, who then took a manual pulse measurement and a static control sensor reading. Of the 220, it confirmed AF in 59 individuals–26%. 20 already knew they had AF, meaning that 39 did not know. The average age of the 59 participants with atrial fibrillation was 74 years and 43% were women. To the positives, the pharmacist offered a cardiologist consultation referral.

The results suggested to the LJMU team that results in phase 1 were not very accurate, and the second phase required a more accurate diagnostic tool. Accessibility and acceptability were favorable. Ian Jones, one of the researchers and a professor at LJMU said, “Nearly two-thirds of the shoppers we approached were happy to use a trolley, and the vast majority of those who declined were in a rush rather than wary of being monitored.” The second phase of the study would also give a designated spot to place the hands continously and halve the time of the ECG to 30 seconds based on ESC (European Society of Cardiology) guidelines.

The results above were presented at the ACNAP (Association of Cardiovascular Nursing & Allied Professions) Congress 2023 in Edinburgh on 23 June (session listing). European Society of Cardiology (ESC) release, Interesting Engineering, Manchester Evening News,    Study proposals: abstract and full text in PubMed.

Health tech for stroke prevention and rehab from Kardia Mobile, Watch BP, Northwestern U (UK/US)

February 23, 2018 | by
[grow_thumb image=”https://telecareaware.com/wp-content/uploads/2018/02/Northwestern-stroke-patch.jpg” thumb_width=”150″ /]Is stroke avoidable? We know it is an expensive medical event at $20-23,000 for hospitalization alone (NIH), which does not count rehabilitation or the devastation to individuals and their families, including loss of ability and work. NHS England is testing two devices, the Kardia Mobile and Watch BP, with an eye to preventing stroke in those vulnerable to it. 6,000 devices are being distributed to GP practices in England in a program through 15 NHS and care innovation bodies known as Academic Health Science Networks (AHSNs). The Alivecor‘s Kardia Mobile is a smartphone add-on clip that captures a medical-grade ECG in 30 seconds, stores, and sends readings to physicians. The application to stroke is primarily in atrial fibrillation (AF) and irregular heart rhythms, which according to statistics, more than 420,000 people across England have. Watch BP is a blood pressure cuff device which is also equipped with an AF detection system. The goal of the project is to identify 130,000 new cases of AF over two years, to prevent at least 3,650 strokes and potentially save 900 lives. Savings to NHS are being estimated at £81 million annually. Digital Health News

Post-stroke rehabilitation treatment is also being boosted by a new device developed at Northwestern University and being tested at the Shirley Ryan AbilityLab, a Chicago research hospital. It is a Band-Aid® like device which can be applied to key areas such as the throat (left above, credit AbilityLab), chest, or limbs to send back information to doctors on how a patient in treatment post-discharge, especially at home, progresses. The sensors and platform measure heart activity, muscle movement, sleep quality, swallowing ability, and patterns of speech. Especially revolutionary is the monitoring of speech communication and swallowing, which are often impaired in stroke patients but hard to track once the patient is out of a facility. The team’s research was presented last week at the American Association for the Advancement of Science (AAAS) annual meeting. New Atlas. Hat tip to Toni Bunting.

Breaking news: AliveCor’s integration with Apple Watch – hugely impressive!

March 16, 2016 | by

Kardia bandAliveCor have today announced the Kardia Band which replaces the ordinary strap on an Apple Watch. Touch the band with your other hand and it records a one-lead ECG (EKG=US) that communicates with the Watch app, Kardia by AliveCor. The Atrial Fibrillation (AF) Detector then uses an algorithm to instantly detect and inform the wearer of the presence of AF, the most common cardiac arrhythmia and a leading cause of stroke. Other ‘detectors’ look at the ECG to determine normal heart rate and rhythm or if you should retake an ECG so physicians receive only the highest quality recordings.

Users can also record voice memos on their Apple Watch to accompany each ECG that give doctors and caregivers a clearer picture of what was happening at the time of the recording — describing symptoms such as palpitations or external factors like caffeine intake. Kardia also integrates seamlessly with Apple’s Health app to include ECG data with steps and calorie intake to provide richer, personal analysis over time.

A short note at the end indicates that the FDA-cleared AliveCor Mobile ECG, best known for snapping on to an iPhone but works on Android smartphones as well, has been rebranded as Kardia Mobile to establish a product family.

Most impressive.

In the US, the Kardia Band is pending 510k clearance and is not currently for sale. Plans for the UK have not been formally announced but anticipated soon.  AliveCor release.

AliveCor community screening test finds atrial fibrillation in 1.5% (AUS)

April 2, 2014 | by | 2 Comments

A year-long pilot program in Australia to screen for for atrial fibrillation (AF) found new, previously undiagnosed AF in 1.5% of those tested. The SEARCH-AF study used the AliveCor Heart Monitor ECG  to test 1,000 customers 65 years and older through community screening in suburban Sydney pharmacies. Pharmacists used the AliveCor device, attached to an iPhone, to transmit 30-60 second ECG recordings to study cardiologists. If AF was suspected, the follow-up was a GP review and a 12-lead ECG performed. AF is the most common heart rhythm abnormality and puts an individual at five times the risk for stroke (National Stroke Association). Early diagnosis and treatment cost savings are straightforward: over $20,000 (~£12,400) for prevention of one stroke. (This Editor’s opinion–it’s an understatement.) Per the study summary:

The incremental cost-effectiveness ratio of extending iECG screening into the community, based on 55% warfarin prescription adherence, would be $AUD5,988 (€3,142; $USD4,066) per Quality Adjusted Life Year gained and $AUD30,481 (€15,993; $USD20,695) for preventing one stroke. (“Feasibility and cost effectiveness of stroke prevention through community screening for atrial fibrillation using iPhone ECG in pharmacies”, Thrombosis and Haemostasis, Ben Freedman, MD et al., 1 April online (subscription access required for full study)

15 new AF diagnoses per 1,000 may not sound high, but using the above estimate, this type of community screening using AliveCor or a similar device translates to a cost saving of over $310,425, assuming that all undiagnosed AF resulted in a stroke. Even if less, it is a nice return on investment, health and future outcomes. (This Editor invites more accurate cost analysis.) AliveCor release (San Francisco Business Times). Additional coverage CNet Australia. The George Institute for Global Health Australia project page which extends the study to GP clinics.