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Hey,
Many patient's complained of frequent urination after getting IV normal saline pre-operatively on my gyn rotation. Normal saline increases the intravascular volume, and assuming the patients have normal na status, has little effect on the osmolarity of blood. Why then do these patient's urinate more? My resident was unable to explain this effect. I have already forgotten renal, and it was only 6 months ago! Thanks.
Many patient's complained of frequent urination after getting IV normal saline pre-operatively on my gyn rotation. Normal saline increases the intravascular volume, and assuming the patients have normal na status, has little effect on the osmolarity of blood. Why then do these patient's urinate more? My resident was unable to explain this effect. I have already forgotten renal, and it was only 6 months ago! Thanks.