ArticleJTCVS open2022
Comparing three wearable accelerometers to measure early activity after cardiac surgery.
Article in JTCVS open, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.
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Who cites it
8 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Interventions Using Wearable Activity Trackers to Improve Patient Physical Activity and Other Outcomes in Adults Who Are Hospitalized: A Systematic Review and Meta-analysis.JAMA network open · 2023Pooled it
- Implementation of wearable activity trackers in hospital rehabilitation: a feasibility study tailored to local settings.BMC health services research · 2026Article
- Wearable Technology in Surgery: New Developments Toward Real-Time Patient Monitoring.ANZ journal of surgery · 2025Article
- Stepping toward implementation using co-design: development of hospital protocols and resources for using wearable activity trackers in a hospital service.Frontiers in digital health · 2025Article
- Association of computed tomography-derived muscle mass and quality with delayed acquisition independent walking after cardiovascular surgery.Journal of cachexia, sarcopenia and muscle · 2024Article
- A New Index for the Quantitative Evaluation of Surgical Invasiveness Based on Perioperative Patients' Behavior Patterns: Machine Learning Approach Using Triaxial Acceleration.JMIR perioperative medicine · 2023Article
- Observational
- Remote monitoring following adult cardiac surgery: A paradigm shift?JTCVS open · 2023Article
Corrections and comments
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Authors and funding
10 authors.
Funding
Abstract
Objective: Wearable activity monitors can provide detailed data on activity after cardiac surgery and discriminate a patient's risk for hospital-based outcomes. However, comparative data for different monitoring approaches, as well as predictive ability over clinical characteristics, are lacking. In addition, data on specific thresholds of activity are needed. The objective of this study was to compare 3 wearable activity monitors and 1 observational mobility scale in discriminating risk for 3 hospital-based outcomes, and to establish clinically relevant step thresholds. Methods: Cardiac surgery patients were enrolled between June 2016 and August 2017 in a cohort study. Postoperative activity was measured by 3 accelerometry monitors (StepWatch Ambulation Monitor, Fitbit Charge HR, and ActiGraph GT9X) and 1 nurse-based observation scale. Monitors represent a spectrum of characteristics, including wear location (ankle/wrist), output (activity counts/steps), consumer accessibility, and cost. Primary outcomes were duration of hospitalization >7 days, discharge to a nonhome location, and 30-day readmission. Results: Data were available from 193 patients (median age 67 years [interquartile range, 58-72]). All postoperative day 2 activity metrics (ie, from StepWatch, Fitbit, ActiGraph, and the observation scale) were independently associated with prolonged hospitalization and discharge to a nonhome location. Only steps as measured by StepWatch was independently associated with 30-day readmission. Overall, StepWatch provided the greatest discrimination (C-statistics 0.71-0.76 for all outcomes). Step thresholds between 250 and 500 steps/day identified between 74% and 96% of patients with any primary outcome. Conclusions: Data from wearable accelerometers provide additive value in early postoperative risk-stratification for hospital-based outcomes. These results both support and provide guidance for activity-monitoring programs after cardiac surgery.
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