<prompt> All of the following factor increase the risk of amino glycoside renal toxicity except -Elderly personHypokalemiaSimultaneous use with penicillinAminoglycoside administration in recent past  <response>: Ans. is c i.e., Simultaneous use with penicillin Nephrotoxicitv of aminoglycosides is potentiated by Advanced age, liver disease, diabetes mellitus, septic shock. Drugs - Amphotericin B, cyclosporine, vancomycin, ACE inhibitors, cisplatin. Longer course of therapy. Furosemide potentiates nephrotoxicity by causing volume depletion and hypokalemia. 