BACKGROUND: Percutaneous coronary interventions (PCIs) in complex lesions are increasingly common in daily practice. The objective of this study was to determine the impact of complex lesions on radiological exposure during PCI. METHODS: Prospective cohort study including patients undergoing PCI between August 2010 and December 2011. Clinical, angiographic and radiation exposure characteristics were recorded in a dedicated database. Patterns of radiation exposure (total dose received, fluoroscopy time and dose-area product) were determined in patients undergoing PCI for non-complex (A/B1) and complex (B2/C) lesions. Data were analyzed by the SPSS 18.0 program. Independent radiation exposure predictors were determined by multiple logistic regression. RESULTS: We analyzed 413 PCIs, 83 lesions in group A/B1 and 330 in group B2/C. There were no clinically significant differences between groups. The median radiation dose received by patients was significantly higher in group B2/C (1,103.9 mGy vs 866.6 mGy; P < 0.01). The dose-area product (43,484 mGy.cm² vs 58,327 mGy.cm²; P < 0.001) and fluoroscopy time (9 ± 6 minutes vs 12.1 ± 9.5 minutes; P = 0.001) were also significantly higher in group B2/C. Predictors of increased radiation exposure were weight [odds ratio (OR) 1.02 for each increase of 1 kg, confidence interval (CI) 1.01-1.036; P = 0.004], type B2/C lesion (OR 1.9, CI 1.002-4.96; P = 0.002). CONCLUSIONS: Patients undergoing PCI in complex lesions are significantly more exposed to radiation. Weight and lesion type (B2/C) are predictors of increased radiation exposure.
Angioplasty; Radiation, ionizing; Radiation exposure
