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July 31 I had my left kidney removed. I am 68 year old white male. Previously my Bun levels were high but in normal range. My creatinine was similar. After the removal the Bun ranges from 25, sometimes hits 30. My creatinine was 1.9, now is about 1.6 to 1.7. All my other blood work (potassium, glucose, protein) are in normal range. My GFR is 45 which they say is to be expected for one kidney. I see a urologist and a kidney doctor. My confusion is this. My primary care tried a diuretic to lower BP. This raised BUN to 38 so we stopped it. So the forcing of "water" from my system increased the BUN. But my urologist and kidney doctor want me to drink lots of water. This makes me urinate more, therefore isn't this having the same effect as the diuretic, forcing more "water" through the kidney? Thus my confusion. The diuretic is bad because it forces water through the kidney, but drinking more water is good even though it forces more water through the kidney???
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