IA, intracranial aneurysm; CRP, C-reactive protein; TC, total cholesterol; LDL-C, low-density lipoprotein cholesterol; HDL-C, high-density lipoprotein cholesterol; GLU, Fasting blood glucose; TG, Triglyceride; UA, Uric acid; HbA1c, Glycosylated hemoglobin; Hcy, Total plasma homocysteine; BNP, brain natriuretic peptide; GCS, Glasgow Coma score; WFNS, World Federation of Neurosurgical Societies; mRS, modified Ranking scale. Here, NPPB is linked to Dilatation of the cerebral artery.