Fig. 3.

The clinical course. The scheme (A) shows the patient’s renal function and BP. Plasma renin activity and serum aldosterone are also shown (B). After a ureteral stent placement on day 8, the patient’s renal function improved in proportion with a decrease in BP and plasma renin activity; however, the changes in these parameters plateaued on days 21–25. After perirenal fluid drainage on day 26, the patient’s renal function, BP, and plasma renin activity improved without the use of antihypertensive medications. Abbreviations: BP blood pressure, eGFR estimated glomerular filtration rate