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Background

The relationship between the combined hematological parameters and echocardiography and long‐term prognosis in patients with coronary artery disease (CAD) remains unclear.

Methods

We examined the ability of hematological parameters to predict all‐cause death and major adverse cardiovascular events (MACE) based on Lasso Cox regression analysis. The significant predictors of hematological parameters from the Lasso Cox model were analyzed via multivariate Cox regression analysis and by adjusting for echocardiographic data. We calculated the continuous net reclassification improvement (cNRI) and integrated discrimination improvement (IDI) of the hematological parameters to assess the improvement in prediction.

Results

A low hemoglobin and lymphocyte ratio and high hematocrit, red blood cell distribution width‐coefficient of variation, and monocyte ratio significantly increased the risk of MACE and death in CAD patients. Neutrophil‐to‐lymphocyte ratio was associated with MACE but not death in CAD patients. After adjustment for echocardiographic parameters, hemoglobin, hematocrit, and lymphocyte ratio remained independently related to death and MACE. The addition of hematological and echocardiographic parameters to the Framingham risk score model significantly improved the area under the curve of mortality (0.794 vs. 0.713, p = 0.0007) and reclassification with cNRI of 30.6% (p = 0.002) and IDI of 0.055 (p < 0.001). Mendelian randomization analyses identified that fibrinogen and neutrophil‐to‐lymphocyte ratio were associated with increased brain natriuretic peptide and decreased left ventricular ejection fraction.

Conclusions

These findings suggest that the blood immune inflammatory indicators fibrinogen and neutrophil‐to‐lymphocyte ratio were causally associated with the risk of heart failure after CAD. The combination of hematological biomarkers and echocardiography parameters as predictor variables is a useful predictive tool for all‐cause mortality in patients with CAD.


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Blood immune inflammatory indicators predict prognosis in patients with coronary artery disease

Show Author's information Ju‐E Liu1 Shufen Zheng1Kai Chen1Jing Wang1Xiaoqi Liu1Weihua Lai1Qian Zhu1Zhuoyi Wu1Jinxiu Meng2Shuang Xia3Yong Liu3 Shilong Zhong1,2( )
Department of Pharmacy, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China
Guangdong Provincial Key Laboratory of Coronary Heart Disease Prevention, Guangdong Cardiovascular Institute, Guangdong Provincial People's Hospital, Guangdong Academy of Medical Sciences, Guangzhou, China
Department of Cardiology, Guangdong Provincial People's Hospital (Guangdong Academy of Medical Sciences), Southern Medical University, Guangzhou, China

Abstract

Background

The relationship between the combined hematological parameters and echocardiography and long‐term prognosis in patients with coronary artery disease (CAD) remains unclear.

Methods

We examined the ability of hematological parameters to predict all‐cause death and major adverse cardiovascular events (MACE) based on Lasso Cox regression analysis. The significant predictors of hematological parameters from the Lasso Cox model were analyzed via multivariate Cox regression analysis and by adjusting for echocardiographic data. We calculated the continuous net reclassification improvement (cNRI) and integrated discrimination improvement (IDI) of the hematological parameters to assess the improvement in prediction.

Results

A low hemoglobin and lymphocyte ratio and high hematocrit, red blood cell distribution width‐coefficient of variation, and monocyte ratio significantly increased the risk of MACE and death in CAD patients. Neutrophil‐to‐lymphocyte ratio was associated with MACE but not death in CAD patients. After adjustment for echocardiographic parameters, hemoglobin, hematocrit, and lymphocyte ratio remained independently related to death and MACE. The addition of hematological and echocardiographic parameters to the Framingham risk score model significantly improved the area under the curve of mortality (0.794 vs. 0.713, p = 0.0007) and reclassification with cNRI of 30.6% (p = 0.002) and IDI of 0.055 (p < 0.001). Mendelian randomization analyses identified that fibrinogen and neutrophil‐to‐lymphocyte ratio were associated with increased brain natriuretic peptide and decreased left ventricular ejection fraction.

Conclusions

These findings suggest that the blood immune inflammatory indicators fibrinogen and neutrophil‐to‐lymphocyte ratio were causally associated with the risk of heart failure after CAD. The combination of hematological biomarkers and echocardiography parameters as predictor variables is a useful predictive tool for all‐cause mortality in patients with CAD.

Keywords: risk prediction, all‐cause death, major adverse cardiovascular events, hematological parameters, mortality biomarkers

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Publication history

Received: 25 February 2023
Accepted: 11 May 2023
Published: 24 June 2023
Issue date: June 2023

Copyright

© 2023 The Authors. Tsinghua University Press.

Acknowledgements

ACKNOWLEDGMENTS

This study was funded by the National Nature Science Foundation of China (No. 81872934, 81673514), Guangdong key areas R&D projects, China (No. 2019B020229003) and the Science and Technology Development Projects of Guangdong Province, China (No. 2017B0303314041), the Science and Technology Program of Guangzhou, China (No. 202002030415).

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This is an open access article under the terms of the Creative Commons Attribution‐NonCommercial License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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