NCLEX PN Practice Test Practice Question
The nurse is observing a staff member preparing regular insulin and NPH insulin in 1 syringe. The nurse should intervene if the staff member is observed
Correct Answer: A
Rationale: When mixing regular and NPH insulin, regular (clear) insulin is drawn first to prevent contamination with NPH (cloudy) insulin, which could alter its action. Drawing NPH after regular (A) is incorrect and requires intervention. Injecting air into vials (B) follows the same order (NPH then regular), which is correct. Needle contact with the vial (C) is poor technique but less critical than incorrect insulin order.
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