A nurse prepares intermediate-acting insulin NPH for subcutaneous injection. Which action is correct?
Correct answer: B. Roll the vial gently between the palms to mix it
- A. Shake the vial vigorously before withdrawing insulin
- B. Roll the vial gently between the palms to mix it
- C. Warm the vial in hot water before drawing the dose
- D. Leave the vial undisturbed because NPH must remain clear
Explanation
NPH insulin is a cloudy suspension, so the vial is gently rolled to resuspend the particles. Vigorous shaking can create bubbles and affect accurate dose measurement; NPH should not be expected to look clear.
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About Endocrine and Diabetes Drugs
Endocrine pharmacology includes insulin preparations, oral antidiabetic drugs, thyroid and antithyroid medicines, corticosteroids, sex hormones and drugs affecting calcium balance. Questions address onset and duration, administration, monitoring, hypoglycaemia, steroid adverse effects and the difference between replacing a deficient hormone and suppressing excessive hormone activity.
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