A patient is receiving an IV of esmolol 2.5 grams in 250 mL D5W (dextrose 5% in water) infusing at 200 micrograms/kilogram/minute. The patient weighs 110 lb. What rate (in mL/hr) should the nurse program into the IV pump to deliver this dose?
45 mL/hr
60 mL/hr
75 mL/hr
90 mL/hr
The Correct Answer is B
To calculate the infusion rate in mL/hr, you first need to find the total dosage the patient needs per minute and then convert it to mL/hr.
Convert the patient's weight from pounds to kilograms: 110 lb ÷ 2.2 = 50 kg
Calculate the total dosage per minute:
Dosage = 200 micrograms/kg/minute * 50 kg = 10,000 micrograms/minute or 10 mg/minute
Calculate the total volume per minute:
Concentration of esmolol solution = 2.5 grams in 250 mL = 10 mg/mL Volume = Dosage ÷ Concentration = 10 mg/minute ÷ 10 mg/mL = 1 mL/minute
Convert the volume per minute to mL/hr: 1 mL/minute × 60 minutes/hour = 60 mL/hour
So, the nurse should program the IV pump to deliver 60 mL/hr.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
To calculate the total amount of rifampin needed for the client, follow these steps:
1. Calculate the total dosage required:
Dosage = 4 mg/kg * 43 kg = 172mg
2. Determine the total amount needed for 6 days:
Total dosage for 6 days= 172 mg/dose * 3 doses/day * 6 days = 3096 mg
3. Calculate how many 100 mg bottles are needed:
Number of bottles = 3096mg/100 mg/bottle = approx 31
Rounding to the nearest whole number, 31 bottles of 100 mg rifampin will be required for this client.
Correct Answer is C
Explanation
A.It is the least painful location for this injection.
This statement is not necessarily true for everyone. Pain perception varies among individuals, and what might be the least painful site for one person might not be the same for another. Pain perception can also depend on factors such as the size of the needle, the technique of administration, and individual sensitivity.
B.There are fewer insulin side effects when given in this site.
The site of insulin administration (abdomen, thigh, arm) does not significantly affect the occurrence of side effects of insulin. Insulin side effects, such as hypoglycemia or allergic reactions, are related to the medication itself and individual patient factors, rather than the injection site.
C.There is steady absorption of insulin from this site.
This statement is correct, which makes it the preferred site for many people. However, the other choices incorrectly suggest reasons for this preference. The steady absorption from the abdomen is due to the consistent blood supply and tissue characteristics in this area.
D.It causes less bruising at the site.
The injection site does not solely determine the likelihood of bruising. Factors such as needle size, technique, and individual patient characteristics play a more significant role in whether bruising occurs. Bruising can happen at any injection site if proper techniques are not followed.
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