title: Studies on postoperative renal function.
mesh_terms: D005260:Female; D006801:Humans; D007668:Kidney / Q000503:physiopathology*; D007677:Kidney Function Tests; D008297:Male; D008875:Middle Aged; D011183:Postoperative Complications; D011188:Potassium / Q000652:urine; D012964:Sodium / Q000652:urine; D014882:Water-Electrolyte Balance
chemical_list: D012964:Sodium; D011188:Potassium