Author Question: How are glucose and insulin used to treat hyperkalemia associated with acute renal failure? (Read 72 times)

nramada · **on:** Aug 28, 2021

Question 1

Which urine characteristics are indicative of acute tubular necrosis (ATN) caused by intrinsic (intrarenal) failure?

◦ Urine sodium >30 mEq/L
◦ Urine osmolality >500 mOsm
◦ Fractional excretion of sodium (FE_Na) <1%
◦ Urine sediment has no cells, some hyaline casts

Question 2

How are glucose and insulin used to treat hyperkalemia associated with acute renal failure?

◦ Glucose has an osmotic effect, which attracts water and sodium, resulting in more dilute blood and a lower potassium concentration.
◦ When insulin transports glucose into the cell, it also carries potassium with it.
◦ Potassium attaches to receptors on the cell membrane of glucose and is carried into the cell.
◦ Increasing insulin causes ketoacidosis, which causes potassium to move into the cell in exchange for hydrogen.

kbennett34 · **Reply #1 on:** Aug 28, 2021

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