A nurse is caring for a child who has recurrent otitis media. The child weighs 14.9 kg (33 lb). A prescription is written for amoxicillin 40 mg/kg PO to be given in two divided doses per day. The pharmacy provides the nurse with amoxicillin 250 mg/5 mL. How many mL of the medication should the nurse plan to administer for each dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["6"]
Calculate the total daily dose:
Total daily dose (mg) = Weight (kg) x Dosage (mg/kg/day)
=14.9 kg x 40 mg/kg/day
= 596 mg/day
Calculate the dose per administration (divided into two doses):
Dose per administration (mg) = Total daily dose (mg) / Number of doses
= 596 mg/day / 2 doses
= 298 mg/dose
Calculate the volume to administer per dose:
Volume (mL) = Desired dose (mg) / Available concentration (mg/mL)
Available concentration = 250 mg / 5 mL
= 50 mg/mL
Volume (mL) = 298 mg / 50 mg/mL
= 5.96 mL/dose
Round to the nearest whole number:
5.96 mL is 6 mL/dose
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
A. Restart the infusion in the other extremity. While the IV infusion will need to be restarted in a new site, the priority after discontinuing the infusion is to manage the complications of IV infiltration. Restarting the infusion should be done after addressing the swelling and discomfort in the affected limb.
B. Elevate the extremity. Elevating the extremity reduces swelling and promotes fluid reabsorption following an IV infiltration. This helps minimize pain, tissue damage, and further complications, such as compartment syndrome. It is the next priority action after stopping the infusion.
C. Remove the catheter. The catheter should already be removed when the infusion is discontinued due to suspected infiltration. Keeping it in place could worsen tissue swelling and damage. If the catheter has not been removed yet, doing so is essential, but managing swelling and discomfort remains the priority after removal.
D. Apply warm, moist compresses to the site. Warm compresses are typically used for extravasation of non-vesicant solutions to promote circulation and absorption. However, in cases of severe infiltration or swelling, cold compresses may be used initially to reduce inflammation before applying warmth. The priority action is elevation, followed by applying appropriate compresses based on facility protocol.
Correct Answer is D
Explanation
A. Fluconazole. Fluconazole is an antifungal medication used to treat fungal infections, such as candidiasis. It is not related to penicillin and does not pose a risk for cross-reactivity in clients with a penicillin allergy. It can be safely administered in this scenario.
B. Tetracycline. Tetracycline is a broad-spectrum antibiotic used to treat bacterial infections, including acne and respiratory infections. It belongs to a different antibiotic class than penicillins and cephalosporins, meaning it does not pose a risk of cross-reactivity in clients with a penicillin allergy.
C. Acyclovir. Acyclovir is an antiviral medication used to treat viral infections, such as herpes simplex and varicella-zoster. Since it does not belong to the beta-lactam antibiotic class, it is not contraindicated for clients with a penicillin allergy.
D. Cephalexin. Cephalexin is a first-generation cephalosporin, which shares a similar beta-lactam ring structure with penicillins. Clients with a history of an anaphylactic reaction to penicillin are at increased risk of cross-reactivity with cephalosporins, particularly first-generation ones like cephalexin. Due to the severity of the client’s allergic reaction, cephalexin should be avoided, and an alternative non-beta-lactam antibiotic should be considered.
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