In addition, acute kidney injury (AKI) develops in around 6% of patients after lung resection surgery and AKI is related to poor prognosis and prolonged duration of hospital admission.Therefore, the investigators also tried to find which agent is better to maintain urinary output during operation and reduce postoperative AKI. The investigators also found there is difference in postoperative delirium incidence between dopamine and phenylephrine continuous infusion.