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Arterial stiffness in people with HIV: a cross-sectional, comparative study with echocardiographic outcomes in
Karl Reis1, Ponsiano F Stephano2,3, Salama Fadhil2,3
1Department of Medicine, University of Washington, Seattle, Washington, USA.
Insights
HIV infection is linked to peripheral arterial stiffness, not central stiffness, in people with HIV (PWH). This stiffness correlates with cardiac changes, indicating a pathway for cardiovascular disease (CVD) in PWH.
Area of Science:
- Cardiology
- Infectious Diseases
- Vascular Biology
Background:
- Cardiovascular disease (CVD) is a significant concern for people with HIV (PWH).
- Arterial stiffness is a potential intermediary linking HIV infection to CVD.
- Holistic assessment of arterial stiffness and its correlation with cardiac outcomes is necessary.
Purpose of the Study:
- To assess arterial stiffness using multimodal methods in people with HIV (PWH) and HIV-uninfected controls.
- To correlate arterial stiffness measures with echocardiographic outcomes.
- To identify risk factors for arterial stiffness phenotypes in PWH.
Main Methods:
- Cross-sectional study involving PWH and HIV-uninfected controls.
- Multimodal assessment of arterial stiffness including ankle-brachial index (ABI) and pulse-wave velocity (PWV).
- Echocardiographic assessment of cardiac outcomes and regression analysis for risk factor identification.
Main Results:
- Elevated ABI was associated with HIV infection and male sex.
- Elevated PWV was associated with age and blood pressure.
- ABI correlated with E:e' (cardiac filling), and PWV correlated with left-ventricular mass index (cardiac hypertrophy).
Conclusions:
- HIV is associated with peripheral arterial stiffness, but not central arterial stiffness.
- Arterial stiffness is mechanistically linked to cardiac hypertrophy and impaired filling in PWH.
- Young, male PWH are identified as a subpopulation at risk for early vascular aging.
Objectives:
Cardiovascular disease (CVD) is a growing cause of morbidity and mortality in people with HIV (PWH). Arterial stiffness may be an intermediary between HIV-infection and CVD, necessitating holistic assessment of arterial stiffness and correlation with cardiac outcomes.
Design:
We conducted a cross-sectional study of PWH and HIV-uninfected community controls using multimodal assessment of arterial stiffness and echocardiographic outcomes.
Methods:
We performed ankle-brachial index (ABI) and pulse wave velocity (PWV) to characterize arterial stiffness in a cohort of PWH and HIV-uninfected community controls in Tanzania. Regression analysis was used to determine differential risk factors for phenotypes of arterial stiffness and echocardiographic outcomes of these phenotypes.
Results:
We enrolled 848 participants; 398/848 PWH (46.9%) and 450/848 community controls (53.1%). In multivariable models, elevated ABI was associated with HIV infection [3.29 (1.51, 7.21), P = 0.003] and male sex [2.33 (1.15, 4.71), P = 0.019], whereas elevated PWV was associated with age [1.11 (1.06, 1.17), P < 0.001], SBP [1.58 (1.24, 2.01), P < 0.001], and DBP [2.03 (1.38-2.98) P < 0.001]. ABI was independently associated with average E:e' [0.74 (0.18, 1.30), P = 0.010]. PWV was independently associated with left-ventricular mass index (LVMI) [10.73 (2.69-18.76), P = 0.009].
Conclusion:
Differential associations between HIV and multiple measures of arterial stiffness suggest that HIV is associated with peripheral but not central arterial stiffness. Arterial stiffness was correlated with cardiac hypertrophy and impaired cardiac filling, suggesting a mechanistic pathway for HIV-related CVD that includes peripheral arterial stiffness. We identified a subpopulation of young, male PWH at risk for early vascular aging.
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