A nurse is preparing to administer pentamidine 4 mg/kg IM to a client who weighs 154 lb. Available is pentamidine 100 mg/mL for injection. How many mL should the nurse administer?
(Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
The Correct Answer is ["2.8"]
Convert the patient's weight from pounds to kilograms:
154 lb ÷ 2.2 = 70 kg
Calculate the dose of pentamidine:
4 mg/kg × 70 kg = 280 mg
Determine the volume to be administered:
We have 100 mg/mL concentration of pentamidine.
280 mg ÷ 100 mg/mL = 2.8 mL
Therefore, the nurse should administer 2.8 mL of pentamidine to the client.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is D
Explanation
Choice A reason: This choice is incorrect because fluids should not be limited to 1000 mL daily for a client taking hydrochlorothiazide. Hydrochlorothiazide is a diuretic that causes the body to lose water and salt through urine. Limiting fluids can lead to dehydration, electrolyte imbalance, and kidney damage. The client should drink enough fluids to prevent thirst and dry mouth, and follow the doctor's advice on fluid intake.
Choice B reason: This choice is incorrect because this medication is not best taken at night for a client taking hydrochlorothiazide. Hydrochlorothiazide can cause frequent urination, which can disrupt the sleep cycle and cause fatigue. The client should take this medication in the morning or at least 4 hours before bedtime to avoid nocturia (nighttime urination).
Choice C reason: This choice is incorrect because dairy products should not be avoided while on this medication for a client taking hydrochlorothiazide. Hydrochlorothiazide can lower the level of calcium in the blood, which can cause muscle weakness, cramps, and osteoporosis. Dairy products are a good source of calcium and can help prevent calcium deficiency. The client should consume adequate amounts of calcium and vitamin D, and have their blood calcium level checked regularly.
Choice D reason: This choice is correct because the client should consume high potassium foods such as bananas and oranges while on this medication. Hydrochlorothiazide can lower the level of potassium in the blood, which can cause irregular heartbeat, muscle weakness, and numbness. Potassium-rich foods can help prevent potassium deficiency and maintain normal heart and muscle function. The client should also have their blood potassium level checked regularly and avoid salt substitutes that contain potassium.
Correct Answer is C
Explanation
Choice A reason: This is incorrect because fentanyl 25 mcg/hr transdermal patch is a common and appropriate dose for chronic pain management. Fentanyl is a potent opioid analgesic that delivers a steady amount of medication through the skin over 72 hours.
Choice B reason: This is incorrect because meloxicam 15 mg PO daily is a standard and safe dose for treating inflammation and pain caused by arthritis. Meloxicam is a nonsteroidal anti-inflammatory drug (NSAID) that reduces the production of prostaglandins, which are involved in inflammation.
Choice C reason: This is correct because regular insulin 8 units subcutaneous before meals is a vague and potentially dangerous prescription. Regular insulin is a short-acting insulin that lowers blood glucose levels by facilitating the uptake of glucose into the cells. The dose of insulin should be individualized based on the client's blood glucose level, carbohydrate intake, and activity level. The nurse should contact the provider for clarification on how to adjust the dose according to the client's needs.
Choice D reason: This is incorrect because docusate sodium 200 mg PO at bedtime is a usual and effective dose for preventing constipation. Docusate sodium is a stool softener that works by increasing the amount of water in the stool, making it easier to pass.
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