The nurse is caring for a client with a potassium level of 5.9 mEq/L. The health care provider prescribes both glucose and insulin for the client. The client's spouse asks, "Why is insulin needed?" Which response by the nurse is the most appropr
A) "The insulin will cause his extra potassium to move into his cells, which will lower potassium in the blood."
B) "Insulin is safer than other medications that can lower potassium levels."
C) "The insulin lowers his blood sugar levels and this is how the extra potassium is excreted."
D) "The insulin will help his kidneys excrete the extra potassium."
Answer: A
Serum potassium levels may be temporarily lowered by administering glucose and insulin, which cause potassium to leave the extracellular fluid and enter cells. Giving insulin to decrease serum potassium levels is not considered a safer method than other medications that can be used. Insulin does not promote renal excretion of potassium. Serum potassium is lowered by entering the cells; this is not controlled by serum glucose.
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