On the x-axis, the change in time, and on the y-axis, the record of urine output of patients. The CO group routinely treated with albumin, dopamine, hydrochlorothiazide and other drugs. The OB group received Zhuling decoction for at least 7 d on the basis of CO group. With prolonged treatment time, the urine volume in both groups increased significantly, and the increase was more significant in the OB group (P = 0.018). CO: control group (n = 48); OB: observation group (n = 48).