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Fan J, Liu Q, Dai H, Zhou D, Guo Y, Xu J, Wang L, Hu P, Jiang J, Lin X, Li C, Liu X, Wang J. Daily Physical Activity Measured by Wearable Smartwatch for Patients Undergoing Transcatheter Aortic Valve Replacement: Insights From the SMART TAVR Study. Circ Cardiovasc Qual Outcomes 2024; 17:e010066. [PMID: 38088154 DOI: 10.1161/circoutcomes.123.010066] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/17/2023] [Accepted: 10/19/2023] [Indexed: 01/17/2024]
Abstract
BACKGROUND This study aims to evaluate limited data about daily physical activity patterns, influential factors, and their association with 1-year mortality or rehospitalization after transcatheter aortic valve replacement (TAVR) through smartwatches. METHODS Consecutive severe aortic stenosis patients undergoing elective transfemoral TAVR in a Chinese tertiary hospital were enrolled from July 2021 to May 2022 and received a Huawei smartwatch at least 1 day before TAVR. The primary outcome was a composite of all-cause mortality or hospital readmission within 1 year. Linear mixed-effects models were applied to determine influential factors of daily step counts, and Cox proportional hazard regression models were to estimate the association between baseline step counts within 1 month since discharge and composite outcome from months 2 to 12. The dose-response association was assessed using restricted cubic spline curves. RESULTS A total of 222 participants and 59 469 valid monitoring person-day records were included (mean age, 72.7 years; 61% women). Step counts increased rapidly within the first 2 months (P<0.001), followed by a slower increase for those without composite outcomes (P=0.029) and a gradual decrease for those who developed composite outcomes (P<0.001). In multivariate linear mixed models, a 1-m increase in baseline 6-minute walk test and a 1-month delay after discharge were associated with 4 (95% CI, 1-7) and 170 (95% CI, 145-194) additional step counts, respectively. In restricted cubic spline analysis, the hazard ratio declined progressively until ≈5000 steps per day, after which they leveled. Below 5000 steps, the adjusted hazard ratio of composite outcome associated with each 1000-step count increase was 0.67 (0.50-0.89; P=0.007). However, above 5000 steps, step counts were not significantly associated with the composite outcome (P=0.645), with a hazard ratio of 1.12 (0.70-1.79). CONCLUSIONS Daily step counts rapidly increased within the first 2 months post-TAVR. Increased physical activity was associated with a lower risk of 1-year mortality or rehospitalization after TAVR for patients with daily step counts below 5000. REGISTRATION URL: https://www.clinicaltrials.gov; Unique identifier: NCT04454177.
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Affiliation(s)
- Jiaqi Fan
- Department of Cardiology (J.F., Q.L., Y.G., L.W., P.H., J.J., X. Lin, X. Liu, J.W.), Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, China
- Department of Epidemiology, Harvard T.H. Chan School of Public Health, Boston, MA (J.F.)
- State Key Laboratory of Transvascular Implantation Devices, Hangzhou, China (J.F., Q.L., X.L., J.W.)
| | - Qiong Liu
- Department of Cardiology (J.F., Q.L., Y.G., L.W., P.H., J.J., X. Lin, X. Liu, J.W.), Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, China
- State Key Laboratory of Transvascular Implantation Devices, Hangzhou, China (J.F., Q.L., X.L., J.W.)
- Cardiovascular Key Laboratory of Zhejiang Province, Hangzhou, China (Q.L., J.W.)
| | - Hanyi Dai
- Zhejiang University School of Medicine, Hangzhou, China (H.D., D.Z.)
| | - Dao Zhou
- Zhejiang University School of Medicine, Hangzhou, China (H.D., D.Z.)
| | - Yuchao Guo
- Department of Cardiology (J.F., Q.L., Y.G., L.W., P.H., J.J., X. Lin, X. Liu, J.W.), Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, China
| | - Jianguo Xu
- Department of Electrocardiogram (J.X.), Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, China
| | - Lihan Wang
- Department of Cardiology (J.F., Q.L., Y.G., L.W., P.H., J.J., X. Lin, X. Liu, J.W.), Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, China
| | - Po Hu
- Department of Cardiology (J.F., Q.L., Y.G., L.W., P.H., J.J., X. Lin, X. Liu, J.W.), Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, China
| | - Jubo Jiang
- Department of Cardiology (J.F., Q.L., Y.G., L.W., P.H., J.J., X. Lin, X. Liu, J.W.), Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, China
| | - Xinping Lin
- Department of Cardiology (J.F., Q.L., Y.G., L.W., P.H., J.J., X. Lin, X. Liu, J.W.), Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, China
- State Key Laboratory of Transvascular Implantation Devices, Hangzhou, China (J.F., Q.L., X.L., J.W.)
| | - Cheng Li
- Department of Nursing (C.L.), Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, China
| | - Xianbao Liu
- Department of Cardiology (J.F., Q.L., Y.G., L.W., P.H., J.J., X. Lin, X. Liu, J.W.), Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, China
| | - Jian'an Wang
- Department of Cardiology (J.F., Q.L., Y.G., L.W., P.H., J.J., X. Lin, X. Liu, J.W.), Second Affiliated Hospital Zhejiang University School of Medicine, Hangzhou, China
- State Key Laboratory of Transvascular Implantation Devices, Hangzhou, China (J.F., Q.L., X.L., J.W.)
- Cardiovascular Key Laboratory of Zhejiang Province, Hangzhou, China (Q.L., J.W.)
- Research Center for Life Science and Human Health, Binjiang Institute of Zhejiang University, Hangzhou, China (J.W.)
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