Univariate analysis was performed to determine whether there were significant differences between the CIN and non-CIN groups in baseline clinical factors, including age, sex, body mass index (BMI), left ventricular ejection fraction (LVEF), B-type natriuretic peptide (BNP), blood creatinine (sCr), glomerular filtration rate (eGFR), and contrast agent dosage. Here, NPPB is linked to cervical squamous intraepithelial neoplasia.