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 C
Explanation
Choice A reason: This is incorrect. INR level is a measure of blood clotting time and is not directly affected by digoxin. It is more relevant for patients who are taking anticoagulants, such as warfarin.
Choice B reason: This is incorrect. Temperature is not a priority assessment for a patient receiving digoxin. It may indicate an infection or inflammation, but it is not related to the action or toxicity of digoxin.
Choice C reason: This is correct. Apical heart rate is the priority assessment for a patient receiving digoxin. Digoxin is a cardiac glycoside that increases the force and efficiency of the heart contractions, but also slows down the heart rate. The nurse should monitor the apical pulse for one full minute before administering digoxin and withhold the dose if the pulse is below 60 beats per minute for adults or below the age-specific normal range for children. A low or irregular pulse may indicate digoxin toxicity, which can be life-threatening.
Choice D reason: This is incorrect. Blood pressure is not a priority assessment for a patient receiving digoxin. Digoxin does not have a direct effect on blood pressure, although it may improve the cardiac output and reduce the fluid retention in patients with heart failure. Blood pressure should be monitored regularly, but it is not as critical as the apical heart rate.
Correct Answer is ["25"]
Explanation
To calculate the IV flow rate in drops per minute (gtt/min) for the administration of clindamycin, we can follow these steps:
First, we need to determine the total number of minutes for the infusion, which is given as 1 hour:
1 hour × 60 minutes/hour = 60 minutes
Next, we calculate the total number of drops needed for the infusion:
The total volume to be infused is 100 mL.
The drop factor is 15 gtt/mL.
100 mL × 15 gtt/mL = 1500 gtt
Calculate the IV flow rate in drops per minute:
1500 gtt ÷ 60 min = 25 gtt/min
Rounding to the nearest whole number, the nurse should set the IV flow rate to deliver 25 gtt/min.
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