Abstract
Patients with cardiac conduction system diseases (CSD) may have increased incidence and mortality of cardiovascular events. Here we report a post hoc analysis of the Strategy of Blood Pressure Intervention in the Elderly Hypertensive Patients (STEP) randomized clinical trial (ClinicalTrials.gov number, NCT03015311) concerning the effect of intensive blood pressure (BP) control on the incidence of new-onset CSD and the prognostic implications of preexisting or new-onset CSD. The incidence of new-onset CSD was similar in the intensive (n = 205, 6.42%) and standard (n = 188, 5.94%) treatment arms. Participants with preexisting CSD had a higher risk for acute decompensated heart failure. Increased age, male sex and increased body mass index were independently associated with increased risk for new-onset CSD. Our results suggest that intensive BP control may not reduce the incidence of new-onset CSD compared with standard BP control.
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Data availability
The data are not publicly available due to restrictions of ethical approval requirements and the current national general data protection regulations of this study. Instructions for applying for data access are detailed at https://www.nejm.org/doi/suppl/10.1056/NEJMoa2111437/suppl_file/nejmoa2111437_data-sharing.pdf. The complete de-identified patient data set underlying this article will be shared on reasonable request to the corresponding author.
Code availability
Survival 3.3.1 in R version 4.1.2 was used to perform Cox regression model and Fine–Gray subdistribution hazard model, and to conduct inverse probability weighting. Complete codes of R software (version 4.1.2) are available from the corresponding author on reasonable request.
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Acknowledgements
The authors sincerely thank all members of the STEP trial research team for their efforts and contributions to this research. This work was supported by Chinese Academy of Medical Sciences Innovation Fund for Medical Sciences (2021-I2M-1-007), National High Level Hospital Clinical Research Funding (2022-GSP-GG-5, 2022-GSP-PT-12), National Natural Science Foundation of China (project ID. 81825002), Beijing Outstanding Young Scientist Program (project ID, BJJWZYJH01201910023029), Beijing Municipal Science and Technology Commission (project IDs, Z191100006619106 and Z201100005620006) and the key project of Science and Technology Innovation Project of China Academy of Chinese Medical Sciences (project ID, CI2021A00920). Y.Z. was supported by National Nature Science Foundation of China (82170388 and 82370300), Shanghai Technology Research Leader Program (21XD1434700), the Cardiac Rehabilitation Fund by the International Medical Exchange Foundation (Z-2019-42-1908-3) and a grant for the construction of Innovative Flagship Hospital for Integrated Traditional Chinese and Western Medicine (ZY(2021-2023)-0205-05). The funders had no role in study design, data collection and analysis, decision to publish or preparation of the manuscript.
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Y.Z. and J.C. designed the study. S.Z. drafted the paper. Y.D. and Y.W. coded and analyzed the data. Y.Z. and J.C. supervised the study and revised the paper. S.Y. and J.H. revised the paper for important intellectual content.
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Nature Aging thanks Sanjay Kaul and Nicholas Pajewski for their contribution to the peer review of this work.
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Extended data
Extended Data Fig. 1 The flow of the study sample.
Abbreviations: ECG, electrocardiogram; CSD, conduction system diseases.
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Supplementary Tables 1–7 and Strengthening the Reporting of Observational Studies in Epidemiology statement.
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Source Data Fig. 1
Statistical results data.
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Zhao, S., Deng, Y., Wang, Y. et al. Incidence and prognosis of cardiac conduction system diseases in hypertension: the STEP trial. Nat Aging 4, 483–490 (2024). https://doi.org/10.1038/s43587-024-00591-6
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DOI: https://doi.org/10.1038/s43587-024-00591-6