Evidence map›Paper›PMID 32012044›Full record

ArticleJMIR cardio2020

Use of a Smart Watch for Early Detection of Paroxysmal Atrial Fibrillation: Validation Study.

Tomohiko Inui, Hiroki Kohno, Yohei Kawasaki, Kaoru Matsuura, Hideki Ueda, Yusaku Tamura, Michiko Watanabe, Yuichi Inage, Yasunori Yakita, Yutaka Wakabayashi and 1 more

Open access · goldAbstract read
In one paragraph

Article in JMIR cardio, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
29citing papers in PubMed, 1 pooled it
4.7field-weighted citation impact, top 4% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

29 citing papers in PubMed, 1 synthesis or guideline pooled it, 58 citations in OpenAlex.

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  3. A Mobile App-based Approach in Cardiovascular Disease Prevention: A Prospective Randomized Study.High blood pressure & cardiovascular prevention : the official journal of the Italian Society of Hypertension · 2024
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 1 institution in 1 country.

Tomohiko InuiDepartment of Cardiovascular Surgery, University of Chiba, Chiba, Japan.ORCID https://orcid.org/0000-0001-6465-4837
Hiroki KohnoDepartment of Cardiovascular Surgery, University of Chiba, Chiba, Japan.ORCID https://orcid.org/0000-0002-5779-9920
Yohei Kawasaki *Clinical Research Center, University of Chiba, Chiba, Japan.ORCID https://orcid.org/0000-0002-7474-7647
Kaoru MatsuuraDepartment of Cardiovascular Surgery, University of Chiba, Chiba, Japan.ORCID https://orcid.org/0000-0002-7607-4482
Hideki UedaDepartment of Cardiovascular Surgery, University of Chiba, Chiba, Japan.ORCID https://orcid.org/0000-0002-8859-8515
Yusaku TamuraDepartment of Cardiovascular Surgery, University of Chiba, Chiba, Japan.ORCID https://orcid.org/0000-0003-1539-8552
Michiko WatanabeDepartment of Cardiovascular Surgery, University of Chiba, Chiba, Japan.ORCID https://orcid.org/0000-0002-5376-7526
Yuichi InageDepartment of Cardiovascular Surgery, University of Chiba, Chiba, Japan.ORCID https://orcid.org/0000-0001-6123-5805
Yasunori YakitaDepartment of Cardiovascular Surgery, University of Chiba, Chiba, Japan.ORCID https://orcid.org/0000-0002-4865-0497
Yutaka WakabayashiDepartment of Cardiovascular Surgery, University of Chiba, Chiba, Japan.ORCID https://orcid.org/0000-0003-2036-5050
Goro MatsumiyaDepartment of Cardiovascular Surgery, University of Chiba, Chiba, Japan.ORCID https://orcid.org/0000-0002-7249-4607
Chiba University · JP

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundWearable devices with photoplethysmography (PPG) technology can be useful for detecting paroxysmal atrial fibrillation (AF), which often goes uncaptured despite being a leading cause of stroke.

objectiveThis study is the first part of a 2-phase study that aimed at developing a method for immediate detection of paroxysmal AF using PPG-integrated wearable devices. In this study, the diagnostic performance of 2 major smart watches, Apple Watch Series 3 and Fitbit (FBT) Charge HR Wireless Activity Wristband, each equipped with a PPG sensor, was compared, and the pulse rate data outputted from those devices were analyzed for precision and accuracy in reference to the heart rate data from electrocardiography (ECG) during AF.

methodsA total of 40 subjects from patients who underwent cardiac surgery at a single center between September 2017 and March 2018 were monitored for postoperative AF using telemetric ECG and PPG devices. AF was diagnosed using a 12-lead ECG by qualified physicians. Each subject was given a pair of smart watches, Apple Watch and FBT, for simultaneous pulse rate monitoring. The heart rate of all subjects was also recorded on the telemetry system. Time series pulse rate trends and heart rate trends were created and analyzed for trend pattern similarities. Those trend data were then used to determine the accuracy of PPG-based pulse rate measurements in reference to ECG-based heart rate measurements during AF.

resultsOf the 20 AF events in group FBT, 6 (30%) showed a moderate or higher correlation (cross-correlation function>0.40) between pulse rate trend patterns and heart rate trend patterns. Of the 16 AF events in group Apple Watch (workout [W] mode), 12 (75%) showed a moderate or higher correlation between the 2 trend patterns. Linear regression analyses also showed a significant correlation between the pulse rates and the heart rates during AF in the subjects with Apple Watch. This correlation was not observed with FBT. The regression formula for Apple Watch W mode and FBT was X=14.203 + 0.841Y and X=58.225 + 0.228Y, respectively (where X denotes the mean of all average pulse rates during AF and Y denotes the mean of all corresponding average heart rates during AF), and the coefficient of determination (R

conclusionsIn this validation study, the detection precision of AF and measurement accuracy during AF were both better with Apple Watch W mode than with FBT.

Indexed as

Apple WatchFitbit Charge HRheart ratemobile healthparoxysmal atrial fibrillationphotoplethysmographyvalidationwrist-banded devices

Identifiers

PMID32012044
PMCPMC7003123
OpenAlexW2994053604

What OpenQuestion holds

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LicenceCC BY
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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.