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colleen colleen
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12 years ago
The nurse is caring for a patient who has a diagnosis of diabetes mellitus type I. The patient has voided 4,000 mL of urine in the past 24 hours. The patient’s skin turgor is poor and the patient is reporting polyphagia and polydipsia. The nurse reviews the patient’s urine glucose level and anticipates the level will be at least ______ mg/dL.
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12 years ago
180 -- Hyperglycemia causes serum hyperosmolality, drawing water from the intracellular spaces into the general circulation. The increased blood volume increases renal blood flow, and the hyperglycemia acts as an osmotic diuretic. The resulting osmotic diuresis increases urine output. This condition is called polyuria. When the blood glucose level exceeds the renal threshold for glucose usually about 180 mg/dL glucose is excreted in the urine, a condition called glucosuria. The decrease in intracellular volume and the increased urinary output cause dehydration. The mouth becomes dry and thirst sensors are activated, causing the person to drink increased amounts of fluid (polydipsia).
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