Which of the following statements is true regarding the onset and peak time of regular insulin when administered subcutaneously?
Regular insulin has an onset of 5 minutes and peaks in 1 hour.
Regular insulin typically has an onset of 30 minutes and peaks in 2-3 hours.
Regular insulin has an onset of 3 hours and peaks in 8-10 hours.
Regular insulin has an onset of 1 hour and peaks in 4-6 hours.
The Correct Answer is B
A. Regular insulin has an onset of 5 minutes and peaks in 1 hour: That pattern matches some rapid-acting analogs, not regular insulin.
B. Regular insulin typically has an onset of 30 minutes and peaks in 2–3 hours: Regular (short-acting) insulin usually begins to work ~30 minutes after SQ injection and peaks about 2–4 hours (commonly cited 2–3 hours).
C. Regular insulin has an onset of 3 hours and peaks in 8–10 hours: That describes intermediate-acting insulins (e.g., NPH-like).
D. Regular insulin has an onset of 1 hour and peaks in 4–6 hours: Onset and peak times are not consistent with standard regular insulin pharmacokinetics.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
A. Furosemide to the client with a serum potassium level of 2.9 mEq/dL: Furosemide is a loop diuretic that causes potassium loss; giving it to a patient with significant hypokalemia (K⁺ 2.9) would worsen hypokalemia and risk dysrhythmias -the order should be questioned.
B. Captopril to the client with a serum sodium level of 137 mEq/dL: sodium 137 is normal and captopril is not contraindicated by that sodium.
C. Hydralazine to the client with a blood pressure of 168/94: hydralazine for markedly elevated BP is reasonable.
D. Diltiazem to the client with a glucose level of 280 mg/dL: hyperglycemia is not a direct contraindication to diltiazem.
Correct Answer is ["B","C","D"]
Explanation
A. “Eat foods high in iodine content, such as fish and shellfish.”: Patients are usually advised to avoid excess iodine before radioiodine therapy because it can compete with uptake and reduce therapy effectiveness.
B. "Wash your clothing separate from others in the household.": Radioactive iodine can be excreted in bodily fluids; laundering separately for a short period is advised to limit household exposure.
C. "Take a laxative 2 days after therapy to excrete the radiation.": A laxative is often recommended a day or two after therapy to speed elimination of radioactive iodine from the GI tract and reduce radiation exposure.
D. "Do not share utensils, plates, and cups with anyone else.": Avoid sharing utensils/close-contact items for a period after therapy to limit radioactive contamination of others.
E. "You can play with your grandchildren for 1 hour each day.": Close contact with children and pregnant women should be limited for a longer period (more than a fixed “1 hour/day”); this statement gives unsafe reassurance.
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