A nurse is preparing to administer erythromycin 50 mg/kg/day in divided doses every 6 hr to an adolescent who is postoperative following surgical removal of a peritonsillar abscess and weighs 40 kg. Available is erythromycin oral solution 200 mg/5 mL. How many mL should the nurse administer with each dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["12.5"]
Dose required per day = 50mg/kg/day × 40 kg = 2000 mg/day
Dose per administration = 2000mg4 doses = 500 mg/dose
Volume to administer:
200mg5ml=40mg/ml
500mg40mg/ml=12.5ml/dose
Correct answer =12.5mL/dose
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is {"A":{"answers":"B"},"B":{"answers":"A"},"C":{"answers":"A"},"D":{"answers":"B"}}
Explanation
Feed infant in a supine position: Contraindicated
- Supine feeding increases the risk of aspiration and exacerbates reflux.
Offer smaller, more frequent feedings: Appropriate
- Smaller, frequent feedings reduce gastric distension and reflux episodes.
Thicken formula feedings with rice cereal: Appropriate
- Thickened feedings can help reduce reflux by increasing the weight of the stomach contents.
Place infant in a side-lying position for sleep: Contraindicated
- The recommended sleep position for infants is supine (on the back) to reduce the risk of sudden infant death syndrome (SIDS).
Correct Answer is C
Explanation
A. Elevate the child's residual limb for 48 hr. Elevation for prolonged periods can cause flexion contractures. Elevation is typically limited to the first 24 hours, if at all.
B. Apply a loose-fitting bandage onto the child's residual limb. A compression bandage, not loose-fitting, is used to shape the residual limb and reduce swelling.
C. Perform active and isotonic range-of-motion exercises. These exercises prevent contractures and maintain muscle strength.
D. Clean the incision using half-strength hydrogen peroxide every 8 hr. Hydrogen peroxide can damage healthy tissue and delay healing. Saline or antiseptic solutions are preferred.
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