Publication date: Sep 24, 2025
Rapid industrialization has exacerbated ambient air pollution in Yichang, China, posing cardiovascular health risks. This study evaluates the short-term impact of ambient air pollutants on cardiovascular disease (CVD) outpatient visits and assesses the effectiveness of environmental policies implemented post-2018. We analyzed 510,831 CVD outpatient records alongside daily concentrations of PM, PM, SO, NO, CO, and O from five monitoring stations. Generalized additive Poisson regression with distributed lag non-linear models (DLNM) quantified associations between ambient air pollutant exposure (per interquartile range (IQR) increase) and daily visits, adjusting for meteorological factors, time trends, and COVID-19. Effects pre- and post-2018 policy implementation (targeting riverside chemical industry relocation) were compared. Short-term exposure to NO₂ (lag05, RR = 1. 253, 95% CI: 1. 192-1. 317), SO₂ (lag0, RR = 1. 053, 95% CI: 1. 011-1. 096), and CO (lag01, RR = 1. 063, 95% CI: 1. 016-1. 111) was significantly associated with increased cardiovascular disease outpatient visits. Concentrations of five major ambient air pollutants (excluding O₃) showed significant reductions after 2018 (P
| Concepts | Keywords |
|---|---|
| China | Ambient air pollution |
| Environmental | Cardiovascular diseases |
| Increase | Environmental management |
| Outpatient | Time series study |
Semantics
| Type | Source | Name |
|---|---|---|
| drug | DRUGBANK | Medical air |
| disease | MESH | cardiovascular disease |
| disease | MESH | COVID-19 |