Occupational Exposure Cardiovascular Hazard Score (Airborne Particulates)

Occupational Exposure Cardiovascular Hazard Score (Airborne Particulates): Explanation and Clinical Context This calculator estimates the incremental cardiovascular hazard associated with occupational fine particulate (PM2.5) exposure by converting a time-weighted PM2.5 increment (workplace minus ambient, adjusted for exposure hours and control efficiency) into a hazard ratio using meta-analytic coefficients (≈10% higher risk per 10 μg/m3 increase). The tool translates population-based exposure–response functions, such as those used in the Global Exposure Mortality Model (GEMM) and Integrated Exposure–Response (IER) frameworks, into an occupational context by applying time-weighting and control efficiency adjustments. Mechanistically, chronic PM2.5 exposure triggers oxidative stress, systemic inflammation, endothelial dysfunction, autonomic imbalance, and atherogenesis—all leading to higher risks of myocardial infarction, arrhythmias, and heart failure.