ATV, atorvastatin; AUC _(0-t), area under plasma concentration-time curve from time 0 to 24 hours; AUC_(0-∞), area under plasma concentration-time curve from time 0 to infinity; C_max, peak plasma concentration; CSDH, chronic subdural hematoma; CSF, cerebrospinal fluid; DXM, dexamethasone; LXRα, liver X receptor α; LC-MS/MS, liquid chromatogram-mass spectrometer/ mass spectrometer; LLOQ, the lower limit of quantification; OATP1B1, organic anion transporting polypeptides;o- ATV, o- hydroxy atorvastatin calcium; p- ATV, p- hydroxy atorvastatin calcium; RSV, rosuvastatin; t_max, time to peak plasma concentration; and t_1⁄2, elimination half-life.