PMID- 31758789
OWN - NLM
STAT- PubMed-not-MEDLINE
LR  - 20200928
IS  - 2561-1011 (Electronic)
IS  - 2561-1011 (Linking)
VI  - 1
IP  - 2
DP  - 2017 Dec 19
TI  - Assessing the Use of Wrist-Worn Devices in Patients With Heart Failure: 
      Feasibility Study.
PG  - e8
LID - 10.2196/cardio.8301 [doi]
LID - e8
AB  - BACKGROUND: Exercise capacity and raised heart rate (HR) are important prognostic 
      markers in patients with heart failure (HF). There has been significant interest 
      in wrist-worn devices that track activity and HR. OBJECTIVE: We aimed to assess 
      the feasibility and accuracy of HR and activity tracking of the Fitbit and Apple 
      Watch. METHODS: We conducted a two-phase study assessing the accuracy of HR by 
      Apple Watch and Fitbit in healthy participants. In Phase 1, 10 healthy 
      individuals wore a Fitbit, an Apple Watch, and a GE SEER Light 5-electrode Holter 
      monitor while exercising on a cycle ergometer with a 10-watt step ramp protocol 
      from 0-100 watts. In Phase 2, 10 patients with HF and New York Heart Association 
      (NYHA) Class II-III symptoms wore wrist devices for 14 days to capture overall 
      step count/exercise levels. RESULTS: Recorded HR by both wrist-worn devices had 
      the best agreement with Holter readings at a workload of 60-100 watts when the 
      rate of change of HR is less dynamic. Fitbit recorded a mean 8866 steps/day for 
      NYHA II patients versus 4845 steps/day for NYHA III patients (P=.04). In 
      contrast, Apple Watch recorded a mean 7027 steps/day for NYHA II patients and 
      4187 steps/day for NYHA III patients (P=.08). CONCLUSIONS: Both wrist-based 
      devices are best suited for static HR rate measurements. In an outpatient 
      setting, these devices may be adequate for average HR in patients with HF. When 
      assessing exercise capacity, the Fitbit better differentiated patients with NYHA 
      II versus NYHA III by the total number of steps recorded. This exploratory study 
      indicates that these wrist-worn devices show promise in prognostication of HF in 
      the continuous monitoring of outpatients.
CI  - (c)Yasbanoo Moayedi, Raghad Abdulmajeed, Juan Duero Posada, Farid Foroutan, Ana 
      Carolina Alba, Joseph Cafazzo, Heather Joan Ross. Originally published in JMIR 
      Cardio (http://cardio.jmir.org), 19.12.2017.
FAU - Moayedi, Yasbanoo
AU  - Moayedi Y
AUID- ORCID: 0000-0002-3288-7393
AD  - Ted Rogers Centre of Excellence in Heart Function, University Health Network, 
      Toronto, ON, Canada.
FAU - Abdulmajeed, Raghad
AU  - Abdulmajeed R
AUID- ORCID: 0000-0003-2555-7019
AD  - Centre for Global eHealth Innovation, Techna Institute, University Health 
      Network, Toronto, ON, Canada.
FAU - Duero Posada, Juan
AU  - Duero Posada J
AUID- ORCID: 0000-0001-6118-4200
AD  - Ted Rogers Centre of Excellence in Heart Function, University Health Network, 
      Toronto, ON, Canada.
FAU - Foroutan, Farid
AU  - Foroutan F
AUID- ORCID: 0000-0002-1029-1812
AD  - Ted Rogers Centre of Excellence in Heart Function, University Health Network, 
      Toronto, ON, Canada.
FAU - Alba, Ana Carolina
AU  - Alba AC
AUID- ORCID: 0000-0003-2744-2696
AD  - Ted Rogers Centre of Excellence in Heart Function, University Health Network, 
      Toronto, ON, Canada.
FAU - Cafazzo, Joseph
AU  - Cafazzo J
AUID- ORCID: 0000-0002-3114-4440
AD  - Centre for Global eHealth Innovation, Techna Institute, University Health 
      Network, Toronto, ON, Canada.
FAU - Ross, Heather Joan
AU  - Ross HJ
AUID- ORCID: 0000-0003-4384-3027
AD  - Ted Rogers Centre of Excellence in Heart Function, University Health Network, 
      Toronto, ON, Canada.
LA  - eng
PT  - Journal Article
DEP - 20171219
PL  - Canada
TA  - JMIR Cardio
JT  - JMIR cardio
JID - 101718325
EIN - JMIR Cardio. 2018 May 04;2(1):e10149. PMID: 31758764
PMC - PMC6857992
OTO - NOTNLM
OT  - Apple watch
OT  - Fitbit
OT  - MeSH: exercise physiology
OT  - heart failure
OT  - heart rate tracker
OT  - steps
OT  - wrist worn devices
COIS- Conflicts of Interest: None declared.
EDAT- 2017/12/19 00:00
MHDA- 2017/12/19 00:01
PMCR- 2017/12/19
CRDT- 2019/11/24 06:00
PHST- 2017/07/02 00:00 [received]
PHST- 2017/10/29 00:00 [accepted]
PHST- 2017/10/10 00:00 [revised]
PHST- 2019/11/24 06:00 [entrez]
PHST- 2017/12/19 00:00 [pubmed]
PHST- 2017/12/19 00:01 [medline]
PHST- 2017/12/19 00:00 [pmc-release]
AID - v1i2e8 [pii]
AID - 10.2196/cardio.8301 [doi]
PST - epublish
SO  - JMIR Cardio. 2017 Dec 19;1(2):e8. doi: 10.2196/cardio.8301.