Examining the Linear Association Between Blood Pressure Levels and Cardiovascular Diseases in the Absence of Major Risk Factors in China

Author:

Zheng Ruizhi12ORCID,Xu Yu12,Li Mian1ORCID,Lu Jieli12,Wu Shujing12,Niu Jingya12,Zhao Zhiyun12ORCID,Chen Li3,Huo Yanan4,Xu Min12,Wang Tiange12,Wang Shuangyuan12,Lin Hong12,Qin Guijun5,Yan Li6,Wan Qin7,Chen Lulu8,Shi Lixin9,Hu Ruying10,Tang Xulei11,Su Qing12,Yu Xuefeng13,Qin Yingfen14,Chen Gang15ORCID,Gao Zhengnan16,Wang Guixia17,Shen Feixia18,Luo Zuojie14,Chen Yuhong12,Zhang Yinfei19,Liu Chao20,Wang Youmin21,Wu Shengli22,Yang Tao23,Li Qiang24,Mu Yiming25,Zhao Jiajun26,Wang Weiqing12,Ning Guang12ORCID,Bi Yufang12,

Affiliation:

1. Department of Endocrine and Metabolic Diseases, Shanghai Institute of Endocrine and Metabolic Diseases (R.Z., Y.X., M.L., J.L., Shujing Wu, J.N., Z.Z., M.X., T.W., S. Wang, H.L., Y.C., Y.B., G.N., W.W.)

2. Shanghai National Clinical Research Center for Metabolic Diseases, Key Laboratory for Endocrine and Metabolic Diseases of the National Health Commission of the PR China, Shanghai Key Laboratory for Endocrine Tumor, State Key Laboratory of Medical Genomics (R.Z., Y.X., M.L., J.L., Shujing Wu, J.N., Z.Z., M.X., T.W., S. Wang, H.L., Y.C., Y.B., G.N., W.W.), Ruijin Hospital, Shanghai Jiaotong University School of Medicine, China.

3. Qilu Hospital of Shandong University, Jinan, China (Li Chen).

4. Jiangxi Provincial People’s Hospital Affiliated to Nanchang University, China (Y.H.).

5. The First Affiliated Hospital of Zhengzhou University, China (G.Q.).

6. Sun Yat-Sen Memorial Hospital, Sun Yat-Sen University, Guangzhou, China (L.Y.).

7. The Affiliated Hospital of Southwest Medical University, Luzhou, China (Q.W.).

8. Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (Lulu Chen).

9. Affiliated Hospital of Guiyang Medical College, China (L.S.).

10. Zhejiang Provincial Center for Disease Control and Prevention, China (R.H.).

11. The First Hospital of Lanzhou University, China (X.T.).

12. Xinhua Hospital Affiliated to Shanghai Jiaotong University School of Medicine, China (Q.S.).

13. Tongji Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, China (X.Y.).

14. The First Affiliated Hospital of Guangxi Medical University, Nanning, China (Y.Q., Z.L.).

15. Fujian Provincial Hospital, Fujian Medical University, Fuzhou, China (G.C.).

16. Dalian Municipal Central Hospital, China (Z.G.).

17. The First Hospital of Jilin University, Changchun, China (G.W.).

18. The First Affiliated Hospital of Wenzhou Medical University, China (F.S.).

19. Central Hospital of Shanghai Jiading District, China (Y.Z.).

20. Jiangsu Province Hospital on Integration of Chinese and Western Medicine, Nanjing, China (C.L.).

21. The First Affiliated Hospital of Anhui Medical University, Hefei, China (Y.W.).

22. Karamay Municipal People’s Hospital, Xinjiang, China (Shengli Wu).

23. The First Affiliated Hospital of Nanjing Medical University, China (T.Y.).

24. The Second Affiliated Hospital of Harbin Medical University, China (Q.L.).

25. Chinese People’s Liberation Army General Hospital, Beijing (Y.M.).

26. Shandong Provincial Hospital Affiliated to Shandong University, Jinan, China (J.Z.).

Abstract

Background: Many studies demonstrate a J-shaped association between blood pressure and cardiovascular diseases (CVDs), but the findings are plagued by confounding from other traditional cardiovascular risk factors (CVRFs). Our aims were to examine the associations of systolic blood pressure (SBP) and diastolic blood pressure (DBP) levels with CVD in individuals without major CVRFs and whether there were thresholds for the association. Methods: In the 4C study (China Cardiometabolic Disease and Cancer Cohort), 36 042 CVRF-free participants without CVD, diabetes, dyslipidemia, hypertension, or smoking were identified during 2011 to 2012. Among CVRF-free participants, 17 476 CVRF-preferable individuals with better glycemic (fasting glucose, <110 mg/dL; 2-hour post-load glucose, <140 mg/dL) and lipid profile (total cholesterol, <200 mg/dL; LDL [low-density lipoprotein] cholesterol, <130 mg/dL) were selected. The total person-years of follow-up for CVRF-free subjects and CVRF-preferable subjects were 130 147 and 63 573 person-years, respectively. Information on the development of major CVDs was collected during 2014 to 2016. Cox proportional hazard models were performed to estimate the risks for incident CVD by SBP and DBP groups, respectively. Results: We found that both baseline SBP and DBP presented significantly linear associations with CVD risks in CVRF-free and CVRF-preferable participants. There is significant increase in the CVD risk among CVRF-free participants with baseline SBP level of 110 to 119 mm Hg (hazard ratio, 1.79 [95% CI, 1.19–2.71]), 120 to 129 mm Hg (hazard ratio, 2.03 [95% CI, 1.36–3.03]), and 130 to 139 mm Hg (hazard ratio, 2.15 [95% CI, 1.40–3.28]) compared with SBP <110 mm Hg. Significant increases were also observed for DBP level of 80 to 89 mm Hg (hazard ratio, 1.43 [95% CI, 1.03–1.97]) compared with DBP <70 mm Hg. Similar results were observed in CVRF-preferable participants. Conclusions: SBP and DBP with levels currently considered normal were significantly and linearly associated with incident CVD without thresholds above 110/70 mm Hg among Chinese adults without major CVRFs.

Publisher

Ovid Technologies (Wolters Kluwer Health)

Subject

Cardiology and Cardiovascular Medicine

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