Hi. Please help me interpret these results. 92 year old female had been previously diagnose with right sided heart failure some 4-5 years ago. Though mostly asymptomatic with just occasional rises in BP, her main problem is her severely swelling feet. She's on antihypertensive (amlodepine) and low dose hydrochlorthiazide. Her BUN, creatinine, SGOT, SGPT, sodium and potassium were taken and they were all normal, thus she was started with aldactone 2 weeks ago. Repeat blood exams were taken (for some reason sodium and potassium were not included) - this time BUN is 10.3 mmol/L (ref value - 2.5 to 6.5); creatinine was 1.3 mg/dl (ref value - 0.7 to 1.5). This reading shows a markedly elevated BUN and a normal creatinine. Patient seems asymptomatic and the bipedal elema radically increased; in fact patient felt asymptomatic and was happy with the cosmetic results (three years of having a feet that looked like it has elephantiasis). Isn't this a normal BUN-crea ratio? (which means that kidney function isn't exactly compromised?) Aldactone has been discontinued for now. If BUN is elevated and creatinine is within normal, isn't this merely a case of dehydration? I would appreciate your opinion on this case. Were trying to get her back to the lab for her sodium and potassium ASAP because Na and K are important to assess metab imbalance. Any suggestions for medications? Only the aldactone has been discontrinued. Please help. Thanks.