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. 2023 May 17:10:1163900.
doi: 10.3389/fcvm.2023.1163900. eCollection 2023.

The aggregate index of systemic inflammation (AISI): a novel predictor for hypertension

Jiaming Xiu #  1   2 , Xueqin Lin #  1   2 , Qiansheng Chen #  1 , Pei Yu  1   2 , Jin Lu  1   2 , Yanfang Yang  1   2 , Weihua Chen  1   2 , Kunming Bao  1 , Junjie Wang  3 , Jinlong Zhu  1   2 , Xiaoying Zhang  1   2 , Yuxiong Pan  1 , Jiabin Tu  1   2 , Kaihong Chen  1 , Liling Chen  1
Affiliations

The aggregate index of systemic inflammation (AISI): a novel predictor for hypertension

Jiaming Xiu et al. Front Cardiovasc Med. .

Abstract

Objective: Inflammation plays an important role in the pathophysiology of hypertension (HTN). Aggregate index of systemic inflammation (AISI), as a new inflammatory and prognostic marker has emerged recently. Our goal was to determine whether there was a relationship between HTN and AISI.

Methods: We analyzed patients with HTN from the National Health and Nutrition Examination Survey (NHANES) from 1999 to 2018. The primary end point was cardiovascular mortality. A total of 23,765 participants were divided into four groups according to the AISI quartile level. The association between AISI and cardiovascular mortality in patients with HTN was assessed by survival curves and Cox regression analyses based on NHANES recommended weights.

Results: High levels of AISI were significantly associated with cardiovascular mortality in patients with HTN. After full adjustment for confounders, there was no significant difference in the risk of cardiovascular mortality in Q2 and Q3 compared to Q1, while Q4 (HR: 1.91, 95% CI: 1.42-2.58; P < 0.001) had a higher risk of cardiovascular mortality compared to Q1. Results remained similar in subgroup analyses stratified by age (P for interaction = 0.568), gender (P for interaction = 0.059), and obesity (P for interaction = 0.289).

Conclusions: In adults with HTN, elevated AISI levels are significantly associated with an increased risk of cardiovascular mortality and may serve as an early warning parameter for poor prognosis.

Keywords: NHANES; aggregate index of systemic inflammation; cardiovascular mortality; hypertension; inflammation.

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Conflict of interest statement

The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest.

Figures

Figure 1
Figure 1
Flowchart of study design.
Figure 2
Figure 2
Number and percentage of deaths in each group.
Figure 3
Figure 3
Kaplan-Meier Survival Estimates for long-term cardiovascular mortality (weighted).
Figure 4
Figure 4
The association between AISI and cardiovascular mortality by selected subgroups (weighted).
See this image and copyright information in PMC

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