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An infant who weighs 22 lbs. receives a prescription for amoxicillin 20 mg/kg/day PO in divided doses every 8 hours. The bottle is labeled, "Amoxicillin for Oral Suspension, USP 250 mg per 5 mL." How many mL should the nurse administer with each dose? (Enter numerical value only. If rounding is necessary, round to the nearest tenth.)

Answer and Explanation

The Correct Answer is ["1.3"]

Convert the infant's weight from pounds (lb) to kilograms (kg).

Given weight = 22 lb

Conversion factor = 1 kg = 2.2 lb

Weight (kg) = (Weight in lb / 2.2 lb/kg)

= (22 / 2.2)

= 10 kg.

Calculate the total daily dose in milligrams (mg/day).

Prescribed dose = 20 mg/kg/day

Total Daily Dose (mg/day) = Weight (kg) x Dose (mg/kg/day)

= 10 kg x 20 mg/kg/day = 200 mg/day.

Calculate the single dose in milligrams (mg/dose).

Frequency = every 8 hours (3 doses per day)

Single Dose (mg/dose) = (Total Daily Dose / Number of doses per day)

= (200 mg / 3)

= 66.67 mg.

Calculate the volume in milliliters (mL) to administer per dose.

Available concentration = 250 mg per 5 mL

Volume (mL/dose) = (Single Dose (mg) / Available concentration (mg)) x Available volume (mL)

= (66.67 mg / 250 mg) x 5 mL

= 1.333... mL.

Round the answer to the nearest tenth.

= 1.3 mL.

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Correct Answer is D

Explanation

A. Morphine can be administered for chest pain to reduce discomfort and anxiety, and it does not have a direct dangerous interaction with sildenafil.

B. Aspirin is commonly used in chest pain management to prevent platelet aggregation and does not interact dangerously with sildenafil.

C. Heparin is an anticoagulant used in acute coronary syndrome; it is safe to administer with sildenafil and does not pose an immediate interaction risk.

D. Nitroglycerin and other nitrates can cause severe hypotension when combined with sildenafil. Withholding nitrates is essential to prevent life-threatening drops in blood pressure in this client.

A. IV site without redness or swelling B. Temperature: 98.8° F (37.1° C) C. Respirations: 28 breaths/minute D. Heart rate: 92 beats/minute E. Taking shallow breaths F. Alert and oriented to person, place, time and situation G. Pain 8 on a 0 to 10 scale H. Blood pressure: 138/82 mm Hg I. Blood pressure: 138/82 mm Hg

Correct Answer is ["C","E","G"]

Explanation

A. IV site without redness or swelling: The IV site appears normal with no signs of infiltration or infection, so no immediate follow-up is required. This finding indicates proper IV insertion and maintenance.

B. Temperature: 98.8° F (37.1° C): This is within normal limits and does not indicate fever or infection, so it does not require immediate follow-up.

C. Respirations: 28 breaths/minute: This is above the normal adult range (12–20 breaths/minute) and may indicate respiratory distress due to pain, shallow breathing, or possible pulmonary complications such as atelectasis or pneumonia, requiring close monitoring and follow-up.

D. Heart rate: 92 beats/minute: Slightly elevated but within mild tachycardia range, which could be related to pain or anxiety. It should be monitored but does not require urgent follow-up.

E. Taking shallow breaths: Shallow breathing is concerning in a client with rib fractures, as it increases the risk for hypoventilation, atelectasis, and pneumonia. This requires immediate intervention, such as pain management and respiratory support.

F. Alert and oriented to person, place, time, and situation: Cognitive status is normal, so no follow-up is needed.

G. Pain 8 on a 0 to 10 scale: Severe pain limits deep breathing and mobility, increasing the risk of complications. Pain management should be addressed promptly to improve comfort and respiratory function.

H. Blood pressure: 138/82 mm Hg: Slightly elevated, likely related to pain or stress. Monitor trends, but it does not require immediate follow-up at this time.

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Naxlex Comprehensive Predictor Exams

A client arrives to the emergency department with chest pain after taking sildenafil. Based on the client's history, which medication should the nurse withhold?

Correct Answer is D

Explanation

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Correct Answer is ["C","E","G"]

Explanation

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