The nurse knows that the dehydration associated with diabetic ketoacidosis results from

a. increased serum osmolality and urea.
b. decreased serum osmolality and hyperglycemia.
c. ketones and potassium shifts.
d. acute renal failure.


A
Hyperglycemia increases the plasma osmolality, and the blood becomes hyperosmolar. Cellular dehydration occurs as the hyperosmolar extracellular fluid draws the more dilute intracellular and interstitial fluid into the vascular space in an attempt to return the plasma osmolality to normal.

Nursing

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