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 A
Explanation
A. Drowsiness. Dimenhydrinate is an antihistamine that works by blocking histamine and acetylcholine receptors in the brain to prevent nausea and vomiting. A common adverse effect is drowsiness due to its sedative properties, which can impair alertness and coordination. Clients should be advised to avoid activities requiring mental alertness, such as driving, until they understand how the medication affects them.
B. Hypertension. Dimenhydrinate does not typically cause hypertension. Instead, it may lead to mild hypotension due to its sedative and anticholinergic effects. Clients with pre-existing hypertension should still monitor their blood pressure, but significant increases are uncommon.
C. Polyuria. Increased urination is not associated with dimenhydrinate use. Antihistamines, including dimenhydrinate, have anticholinergic properties, which can lead to urinary retention rather than increased urine output. Clients experiencing difficulty urinating should report this to their healthcare provider.
D. Dependent edema. Dimenhydrinate does not cause fluid retention or edema. Medications that contribute to edema typically involve hormonal, cardiovascular, or kidney-related effects, which are not mechanisms of dimenhydrinate. If a client develops unexplained edema, other underlying conditions should be investigated.
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.
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