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Screening for atrial fibrillation using economical and accurate technology (From the SAFETY study)

Screening for atrial fibrillation using economical and accurate technology (From the SAFETY study)
Screening for atrial fibrillation using economical and accurate technology (From the SAFETY study)
The prevalence of Atrial Fibrillation (AF) is estimated at more than 3% in the adult population and there has been increased interest in screening for AF. In the SAFETY trial we chose to evaluate if inexpensive, wearable, consumer ECG sensing devices (Polar-H7 (PH7) and Firstbeat Bodyguard 2 (BG2)), could be used to detect AF accurately. We undertook a case-control study of 413 participants aged > 65 (79 with AF/Flutter at the study visit and 336 without) attending 3 general practice surgeries in Hampshire, UK for a single screening visit. The PH7 and BG2 devices were tested alongside 2 established AF detection devices (AliveCor and WatchBP) in random order and the diagnosis of AF was confirmed by 12-Lead ECG interpreted by a panel of cardiologists. The sensitivity (95% CI range), specificity (95% CI range) and overall accuracy (95% CI range) of the 4 devices were: AliveCor: 87.8% (78.7-94.0%), 98.8% (97.0–99.7%), 96.7% (94.4-98.2%); WatchBP: 96.3% (89.7-99.2%), 93.5% (90.3-95.9%), 94.0% (91.3-96.1%): PH7: 96.3% (89.7-99.2%), 98.2% (96.2-99.3%), 97.9% (96.0-99.0%). BG2: 96.3% (89.7 – 99.2%), 98.5% (96.6-99.5%), 98.1% (96.3-99.2%). The PH7 & BG2 devices were highly reliable (the devices acquired sufficient data and obtained a diagnostic result in all but 1 participant on the first attempt.) In conclusion, Inexpensive, consumer heart rate monitoring devices (PH7 and BG2) can be used to detect AF accurately with sensitivity and specificity > 95%. The consumer devices performed as well or better than WatchBP and AliveCor and have the capability to store or transmit ECG data which could be used to confirm AF.
atrial fibrillation , medical devices, heart rate variability (HRV)
0002-9149
Lown, Mark
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Yue, Arthur
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Shah, Benoy
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Corbett, Simon
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Lewith, George
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Stuart, Beth
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Garrard, James
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Brown, Michael
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Little, Paul
1bf2d1f7-200c-47a5-ab16-fe5a8756a777
Moore, Michael
1be81dad-7120-45f0-bbed-f3b0cc0cfe99
Lown, Mark
4742d5f8-bcf3-4e0b-811c-920e7d010c9b
Yue, Arthur
6bab01eb-b37c-4722-8e89-fa347e895e38
Shah, Benoy
0f73f809-dfbf-48ed-a624-b95b6c2aa431
Corbett, Simon
4e0095e2-3de4-46bd-a5fa-62e419768e2b
Lewith, George
0fc483fa-f17b-47c5-94d9-5c15e65a7625
Stuart, Beth
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Garrard, James
85003f67-066c-4ba5-b2a1-d68ecb56c9f1
Brown, Michael
0f950d82-a7ca-4e48-9ccd-975d372ae142
Little, Paul
1bf2d1f7-200c-47a5-ab16-fe5a8756a777
Moore, Michael
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Lown, Mark, Yue, Arthur, Shah, Benoy, Corbett, Simon, Lewith, George, Stuart, Beth, Garrard, James, Brown, Michael, Little, Paul and Moore, Michael (2018) Screening for atrial fibrillation using economical and accurate technology (From the SAFETY study). The American Journal of Cardiology. (doi:10.1016/j.amjcard.2018.07.003).

Record type: Article

Abstract

The prevalence of Atrial Fibrillation (AF) is estimated at more than 3% in the adult population and there has been increased interest in screening for AF. In the SAFETY trial we chose to evaluate if inexpensive, wearable, consumer ECG sensing devices (Polar-H7 (PH7) and Firstbeat Bodyguard 2 (BG2)), could be used to detect AF accurately. We undertook a case-control study of 413 participants aged > 65 (79 with AF/Flutter at the study visit and 336 without) attending 3 general practice surgeries in Hampshire, UK for a single screening visit. The PH7 and BG2 devices were tested alongside 2 established AF detection devices (AliveCor and WatchBP) in random order and the diagnosis of AF was confirmed by 12-Lead ECG interpreted by a panel of cardiologists. The sensitivity (95% CI range), specificity (95% CI range) and overall accuracy (95% CI range) of the 4 devices were: AliveCor: 87.8% (78.7-94.0%), 98.8% (97.0–99.7%), 96.7% (94.4-98.2%); WatchBP: 96.3% (89.7-99.2%), 93.5% (90.3-95.9%), 94.0% (91.3-96.1%): PH7: 96.3% (89.7-99.2%), 98.2% (96.2-99.3%), 97.9% (96.0-99.0%). BG2: 96.3% (89.7 – 99.2%), 98.5% (96.6-99.5%), 98.1% (96.3-99.2%). The PH7 & BG2 devices were highly reliable (the devices acquired sufficient data and obtained a diagnostic result in all but 1 participant on the first attempt.) In conclusion, Inexpensive, consumer heart rate monitoring devices (PH7 and BG2) can be used to detect AF accurately with sensitivity and specificity > 95%. The consumer devices performed as well or better than WatchBP and AliveCor and have the capability to store or transmit ECG data which could be used to confirm AF.

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SAFETYResultsAJC R1 - Accepted Manuscript
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Accepted/In Press date: 3 July 2018
e-pub ahead of print date: 19 July 2018
Keywords: atrial fibrillation , medical devices, heart rate variability (HRV)

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Local EPrints ID: 422761
URI: http://eprints.soton.ac.uk/id/eprint/422761
ISSN: 0002-9149
PURE UUID: e5391c38-7829-4c64-8c83-c14d6f782686
ORCID for Michael Moore: ORCID iD orcid.org/0000-0002-5127-4509

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Date deposited: 03 Aug 2018 16:30
Last modified: 17 Dec 2019 05:18

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Contributors

Author: Mark Lown
Author: Arthur Yue
Author: Benoy Shah
Author: Simon Corbett
Author: George Lewith
Author: Beth Stuart
Author: James Garrard
Author: Michael Brown
Author: Paul Little
Author: Michael Moore ORCID iD

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