abstract
- Background: Establishing typical values is vital for radiation safety in paediatric fluoroscopically guided cardiac procedures (FGCP). Aim: To publish the first typical values for FGCP in a Mexican tertiary hospital. Methods: We retrospectively analyzed 136 procedures (2018¿2024), stratified by procedure type, weight, and age. Kerma-area product (Pka) and cumulative air kerma (Ka,r) were collected. Results: Typical values (median Pka) ranged from: <5 kg (2.84 Gy·cm2) up to 50¿<80 kg (30.54 Gy·cm2). By age group <1 year (3.28 Gy·cm2) up to 10¿15 years (20.63 Gy·cm2). No statistical difference was found between diagnostic and therapeutic procedures. Conclusions: Weight-stratified institutional typical values revealed critical disparities, notably a five-fold higher dose for therapeutic procedures in infants <5 kg (4.07 vs 0.80 Gy·cm2). While weight predicts diagnostic dose, complexity drives therapeutic exposure. These benchmarks enable local optimization and support future National DRL development.