A nurse is collecting data from a client who has hypertension.
The nurse should recognize that which of the following over-the-counter medications is contraindicated for this client?

Choice A rationale:

Spreading the ointment in a 10 cm² (4 in) area is not the recommended method for nitroglycerin ointment application. The ointment should be applied over a 6x inch area in a thin, uniform layer.

Choice B rationale:

Massaging the ointment into the skin is not advised. The ointment should be applied in a thin layer and left to absorb into the skin.

Choice C rationale:

Applying the ointment in a thick layer is not recommended. A thin, uniform layer is sufficient for therapeutic effect.

Choice D rationale:

Covering the administration area with plastic wrap is the correct action. This helps to keep the ointment in place and enhances absorption.

Choice A rationale:

While a tuberculin syringe can be used for insulin administration, it’s not necessary when mixing NPH and regular insulin. Insulin syringes are typically used for this purpose.

Choice B rationale:

Injecting air into each vial before withdrawing insulin helps equalize pressure and makes it easier to draw up the insulin. This should be done before withdrawing any insulin.

Choice C rationale:

Withdrawing NPH insulin first contradicts the standard practice of drawing up insulins. The usual recommendation is to draw up short-acting (regular) insulin before intermediate-acting (NPH) insulin.

Choice D rationale:

Shaking the regular insulin vial is unnecessary and could potentially create bubbles, making it harder to draw up the correct dose of insulin.