Which insulin has an onset of action in 30 minutes to 1 hour, a peak action in 2 to 3 hours, and a duration of action from 4 to 6 hours?

Humulin R (regular)

Lispro

Lente

Lantus

Answer and Explanation

The Correct Answer is A

A. Humulin R (regular insulin) is a short-acting insulin with an onset of 30 minutes to 1 hour, peak at 2 to 3 hours, and duration of 4 to 6 hours.
B. Lispro is a rapid-acting insulin with onset within 15 minutes and shorter duration.
C. Lente insulin is intermediate-acting with a slower onset and longer duration than regular insulin.
D. Lantus (glargine) is a long-acting insulin with no pronounced peak and lasts up to 24 hours.

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Correct Answer is A

Explanation

A. NPH insulin typically has an onset of 1–2 hours, peaks around 4–12 hours after administration, and lasts about 18–24 hours. Given the 7 a.m. administration, the peak effect—and thus the highest risk for hypoglycemia—would occur roughly between 11 a.m. and 7 p.m., making 2 p.m. the most likely time for hypoglycemia.
B. 5 a.m. is before the insulin peak and unlikely to cause hypoglycemia.
C. 10 a.m. is closer to the onset but may be before peak action.
D. 10 p.m. is typically after the insulin effect has declined.

A. Alprazolam B. Vitamin K C. Furosemide D. Vitamin A

Correct Answer is B

Explanation

A. Alprazolam does not have significant interactions with warfarin.
B. Vitamin K antagonizes the effects of warfarin by promoting clotting factor synthesis, decreasing warfarin’s effectiveness.
C. Furosemide does not directly interact with warfarin but requires monitoring for electrolyte imbalance.
D. Vitamin A does not interfere with warfarin therapy.

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Which insulin has an onset of action in 30 minutes to 1 hour, a peak action in 2 to 3 hours, and a duration of action from 4 to 6 hours?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

The nurse is caring for a client who receives an intermediate-acting insulin, Humulin N (Novolin N, Neutral Protamine Hagedorn insulin, isophane, NPH), 25 units daily at 7 a.m. When is hypoglycemia most likely to occur?

Correct Answer is A

Explanation

A nurse reviews the medication list for a client with a new warfarin prescription. The nurse should recognize which of the following medications is incompatible with warfarin.

Correct Answer is B

Explanation

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Which insulin has an onset of action in 30 minutes to 1 hour, a peak action in 2 to 3 hours, and a duration of action from 4 to 6 hours?

The nurse caring for a client post-colon resection assesses the client on the second postoperative day. The nasogastric be remains patent and is draining moderate amounts of greenish fluid. Which assessment finding would suggest that the client's potassium level is too low?

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