A pediatric patient weighing 20 kg is prescribed acetaminophen 15 mg/kg. What is the correct dose?

A. A tuberculin syringe calibrated in milliliters: Tuberculin syringes are calibrated in milliliters, not insulin units. Using them for insulin increases the risk of dose miscalculation and medication errors, especially with high-alert drugs like insulin.

B. A U-100 insulin syringe calibrated for up to 50 units: A U-100 insulin syringe is specifically designed to measure U-100 insulin accurately. A syringe calibrated up to 50 units allows precise dosing without excess space, reducing the risk of dosing errors.

C. A U-500 insulin syringe calibrated for 500 units: U-500 syringes are intended only for highly concentrated insulin. Using this syringe for U-100 insulin would result in a major dosing error and potential severe hypoglycemia.

D. A 1-mL syringe calibrated in milliliters: Although a 1-mL syringe can physically hold the volume, it is not calibrated in insulin units. This makes accurate insulin measurement difficult and unsafe compared with a dedicated insulin syringe.

A. Administer antihistamines immediately: While antihistamines can help manage mild allergic reactions, they are not sufficient for severe or life-threatening anaphylaxis. Immediate discontinuation of the offending medication and emergency interventions are the priority.

B. Discontinue the medication immediately: Stopping the causative medication is the first and most critical action to prevent further exposure and worsening of the anaphylactic reaction. This action is essential to patient safety and must be done before other interventions.

C. Notify the health care provider after completing the medication administration: Waiting to notify the provider after completing administration would delay emergency treatment and put the patient at serious risk of harm.

D. Document the reaction in the patient's medical record: Documentation is important for ongoing care and future medication safety, but it is not the immediate priority during an active anaphylactic reaction.