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 A
Explanation
Choice A reason: Atenolol is a beta blocker that lowers blood pressure and heart rate. The nurse should hold atenolol for this client because the client's heart rate is already low (52 beats per minute), and giving atenolol could cause bradycardia (slow heart rate), which can lead to dizziness, fainting, or heart failure. The nurse should notify the provider and monitor the client's vital signs and cardiac rhythm.
Choice B reason: Captopril is an ACE inhibitor that lowers blood pressure and prevents kidney damage. The nurse should not hold captopril for this client because the client's blood pressure is still high (138/90 mmHg), and captopril could help lower it to the target range. The nurse should administer captopril as prescribed and monitor the client's blood pressure and renal function.
Choice C reason: Warfarin is an anticoagulant that prevents blood clots and reduces the risk of stroke. The nurse should not hold warfarin for this client because the client's INR (a measure of blood clotting time) is within the therapeutic range (2.0 to 3.0), and warfarin could help prevent post-operative complications such as deep vein thrombosis or pulmonary embolism. The nurse should administer warfarin as prescribed and monitor the client's INR and bleeding signs.
Choice D reason: Glipizide is not a medication for this client. Glipizide is an oral hypoglycemic agent that lowers blood sugar levels in people with diabetes. This client does not have diabetes and does not need glipizide. The nurse should check the medication order and the client's medical history and clarify any discrepancies with the provider.
Correct Answer is A
Explanation
Choice A reason: This is correct because high lipid levels, such as cholesterol and triglycerides, are a risk factor for cardiovascular disease. HMG-CoA reductase inhibitors, also known as statins, lower the production of cholesterol in the liver and reduce the risk of heart attack and stroke.
Choice B reason: This is incorrect because blood glucose of 60 is not related to the need for an HMG-CoA reductase inhibitor. Blood glucose of 60 is below the normal range and may indicate hypoglycemia, which is a low blood sugar level. Hypoglycemia can cause symptoms such as dizziness, confusion, sweating, and hunger.
Choice C reason: This is incorrect because platelets over 150,000 are not related to the need for an HMG-CoA reductase inhibitor. Platelets are blood cells that help with clotting and prevent bleeding. The normal range of platelets is 150,000 to 450,000 per microliter of blood. Platelets over 150,000 are within the normal range and do not indicate a problem.
Choice D reason: This is incorrect because low INR is not related to the need for an HMG-CoA reductase inhibitor. INR stands for international normalized ratio and is a measure of how long it takes the blood to clot. The normal range of INR is 0.8 to 1.2. Low INR means the blood clots faster than normal and may indicate a risk of thrombosis, which is a blood clot in a vein or artery.
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