A nurse is admitting a client who reports recurrent flank pain and nausea for 24 hr. Which of the following actions should the nurse take first?

Choice A rationale
Regular insulin should be clear. If it appears cloudy, it may be contaminated or expired, and should be discarded. This is a correct instruction for self-administering regular insulin and NPH insulin from the same syringe.
Choice B rationale
When mixing insulins, regular insulin should be drawn up first, followed by NPH insulin. Drawing up NPH insulin first can lead to contamination of the regular insulin with the cloudy NPH insulin.
Choice C rationale
NPH insulin should be gently rolled or inverted to mix, not shaken. Shaking can cause bubbles, which can lead to inaccurate dosing.
Choice D rationale

Air should be injected into the NPH insulin vial first, not the regular insulin vial. This helps prevent contamination and ensures accurate dosing.

Choice A rationale
Phenazopyridine hydrochloride does not turn the urine purple. Instead, it typically causes the urine to turn a reddish-orange color. This discoloration is harmless and is due to the dye properties of the medication. The purple urine bag syndrome is a rare condition associated with urinary tract infections and not with phenazopyridine hydrochloride use.
Choice B rationale
Phenazopyridine hydrochloride should be taken after meals to minimize stomach upset. Taking it before meals can increase the risk of gastrointestinal discomfort. The medication works as a urinary tract analgesic and does not require administration before meals for effectiveness.
Choice C rationale

Yellowing of the sclera is not an expected effect of phenazopyridine hydrochloride. Yellowing of the sclera, or jaundice, is typically associated with liver dysfunction or hemolysis.
Phenazopyridine hydrochloride does not cause jaundice and any yellowing of the sclera should be promptly evaluated by a healthcare provider.
Choice D rationale
Phenazopyridine hydrochloride works as a urinary tract analgesic. It provides relief from pain, burning, and discomfort caused by irritation of the urinary tract. It is not an antibiotic and does not treat the underlying infection but helps alleviate the symptoms.