Predictive role of pretest probability scores and risk factors of contrast-induced acute kidney injury in patients who underwent CT pulmonary angiography for the suspicion of pulmonary embolism

Abstract

BACKGROUND AND AIM: The use of computed tomographic pulmonary angiogram (CTPA) without determining pretest probability leads to overuse and morbidities as contrast-induced acute kidney injury (CI-AKI). We aimed to assess the predictive role of Wells’ rule and revised Geneva scores together with the D-dimer test in patients who underwent CTPA for the suspicion of pulmonary embolism (PE) and to investigate the frequency of CI-AKI. METHODS: This single-center study was conducted as a retrospective analysis of patients who underwent CTPA. Demographic and clinical variables, risk factors, pretest probability score (PPS), and biomarkers were recorded from written or electronic medical records. RESULTS: A total of 1259 CTPA scans performed for suspicion of acute PE were screened. After exclusion, we analyzed 895 CTPAs. PE rates in the emergency department and in-patient wards were 9.1% and 13.9%, respectively. Immobility, high Wells’ rule, and Geneva scores were found to be predictors of PE. The [OR (95% CI)] were [12.92 (4.38–38.14)], p