A nurse is preparing to administer a client's daily dose of NPH insulin at 0730.
The nurse should expect this type of insulin to peak within which of the following timeframes after administration?
30 minutes to 3 hours.
2 to 6 hours.
4 to 5 hours.
6 to 10 hours.
The Correct Answer is D
NPH insulin is an intermediate-acting insulin that usually starts to work about 1 to 3 hours after injection and peaks 4 to 12 hours later12.
Peak time is when insulin has its strongest effect on lowering blood glucose1.

Choice A: 30 minutes to 3 hours is not the answer because NPH insulin usually starts to work about 1 to 3 hours after injection and peaks 4 to 12 hours later12.
Choice B: 2 to 6 hours is not the answer because NPH insulin usually starts to work about 1 to 3 hours after injection and peaks 4 to 12 hours later12.
Choice C: 4 to 5 hours is not the answer because NPH insulin usually starts to work about 1 to 3 hours after injection and peaks 4 to 12 hours later12.
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Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B"]
Explanation
The current vial of insulin in use can be stored at room temperature for up to 28 days.
Unopened vials of insulin should be stored in the refrigerator to maintain their potency until their expiration date.

Choice C is not the correct answer because the current vial of insulin does not need to be discarded after six doses have been taken.
Choice D is not the correct answer because unused vials of insulin do not need to be returned to the healthcare provider’s office for disposal.
Correct Answer is A
Explanation
Insulin lispro is a fast-acting insulin that starts to work about 15 minutes after injection, peaks in about 1 hour, and keeps working for 2 to 4 hours1.
Therefore, it should be injected 15 minutes before a meal2.
Choice B is incorrect because polyuria (frequent urination) is a symptom of high blood sugar levels, not a direct result of insulin lispro injection.
Choice C is incorrect because checking the expiration date should be done before administering any medication, not after.
Choice D is incorrect because insulin lispro should be administered using a clean syringe and proper hygiene practices should be followed to prevent infection.
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