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ATI Pharmacology quiz(1)
Total Questions : 30
Showing 10 questions, Sign in for moreA nurse is caring for client who has sepsis and a prescription for vancomycin 1 g in 250 mL dextrose 5% (DSW) over 2 hr by IV intermittent bolus. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Identify the given information:
Total volume: 250 mL
Time: 2 hours
Determine the flow rate:
Set up a proportion to solve for the unknown flow rate (X):
250 mL/2 hr = X mL/1 hr
Cross-multiplying gives us:
250 mL x 1 hr = 2 hr x X mL
Simplifying:
250 = 2X
Solving for X:
X = 250 / 2 = 125 mL/hr
A nurse is preparing to administer lamivudine 150 mg PO BID. Available is lamivudine 100 mg tablets. How many tablets should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Identify the given information:
Prescribed dose: 150 mg of lamivudine per dose
Available tablets: 100 mg tablets
Determine the number of tablets per dose:
Find how many 100 mg tablets are needed to make 150 mg of lamivudine.
Set up a proportion to solve for the unknown number of tablets (X):
100 mg/tablet = 150 mg/X tablets
Cross-multiplying gives us:
100 mg x X tablets = 150 mg x 1 tablet
Simplifying:
100X = 150
Solving for X:
X = 150 / 100 = 1.5 tablets
A nurse is preparing to administer amoxicillin 100 mg PO every 8 hr to a toddler who weighs 20 kg. The recommended dosage range is 20 to 25 mg/kg/day. Which of the following actions by the nurse is appropriate?
A nurse is caring for a client who has a pulmonary embolism and has a new prescription for enoxaparin 5mg/kg/dose subcutaneous every 12 hr. The client weighs 286 lbs. How many mg should the nurse administer per dose? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Given:
Client weight: 286 lbs
Prescribed dose: 1.5 mg/kg/dose
Steps to solve:
Convert weight to kg:
1 lb= 0.453592 kg.
Multiply: 286 lbs x 0.453592 kg/lb = 129.8 kg (rounded to one decimal place)
Calculate the dose:
Dose = 1.5 mg/kg/dose x 129.8 kg = 194.7 mg/dose
Round to the nearest whole number:
195 mg per dose.
A nurse is preparing to administer atenolol 50 mg PO daily to a client. The amount available is atenolol 100 mg/tablet. How many tablets should the nurse administer per dose? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Given:
Prescribed dose: 50 mg of atenolol per dose
Available tablets: 100 mg tablets
Steps to solve:
Determine the number of tablets per dose:
Find how many 100 mg tablets are needed to make 50 mg of atenolol.
Set up a proportion to solve for the unknown number of tablets (X):
100 mg/tablet = 50 mg/X tablets
Cross-multiplying gives us:
100 mg x X tablets = 50 mg x 1 tablet
Simplifying:
100X = 50
Solving for X:
X = 50 / 100 = 0.5 tablets
A nurse is preparing to infuse 10 units/hr of regular insulin for a client with diabetic ketoacidosis (DKA). The amount available is 100 units in a 150 mL bag of 0.9 sodium chloride. How will the nurse set up the flow rate (mL/hr)? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Given:
Total units of insulin: 100 units
Total volume: 150 mL
Desired infusion rate: 10 units/hr
Determine the infusion time:
If the nurse is infusing 10 units/hr and has 100 units total, the infusion time will be:
100 units / 10 units/hr = 10 hours
Calculate the flow rate in mL/hr:
Total volume of 150 mL needs to be infused over 10 hours.
The flow rate is:
150 mL / 10 hr = 15 mL/hr
A nurse is preparing to infuse 4 units/hr of regular insulin for a client with diabetic ketoacidosis (DKA). The amount available is 50 units in a 100 mL bag of 0.9 sodium chloride. How will the nurse set up the flow rate (mL/hr)? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Given:
Total units of insulin: 50 units
Total volume: 100 mL
Desired infusion rate: 4 units/hr
Determine the infusion time:
If the nurse is infusing 4 units/hr and has 50 units total, the infusion time will be:
50 units / 4 units/hr = 12.5 hours
Calculate the flow rate in mL/hr:
Total volume of 100 mL needs to be infused over 12.5 hours.
The flow rate is:
100 mL / 12.5 hr = 8 mL/hr
A nurse is preparing to administer dextrose 5% in water (D5W) 150 mL IV to infuse over 3 hr. The drop factor of the manual IV tubing is 10 gtt/ml. The nurse should set the manual IV infusion to deliver how many gtt/min? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
To calculate the IV flow rate in drops per minute (gtt/min:
Flowrate(gtt/min)= (Totalvolumetobeinfused× Dropfactor)/ Time(minutes)
Given:
Total volume to be infused: 150 mL
Drop factor: 10 gtt/mL
Time: 3 hours = 3 x 60 minutes = 180 minutes
Flowrate(gtt/min):
(150mL×10gtt/mL) /180 minutes
Flowrate(gtt/min):
1500gtt / 180 minutes
Flowrate(gtt/min)
8.33 gtt/min
Rounding to the nearest whole number:
8 gtt/min
A nurse is preparing to administer dextromethorphan 30 mg PO. The amount available is dextromethorphan oral liquid 7.5 mg/5mL. How many mL should the nurse administer? (Round the answer to the nearest whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Given:
Prescribed dose: 30 mg of dextromethorphan
Available concentration: 7.5 mg/5 mL
Steps to solve:
Calculate the volume to be administered:
We can set up a proportion to solve for the unknown volume (X):
7.5 mg/5 mL = 30 mg/X mL
Cross-multiplying gives us:
7.5 mg x X mL = 30 mg x 5 mL
Simplifying:
7.5X = 150
Solving for X:
X = 150 / 7.5 = 20 mL
A nurse is preparing to administer fluconazole 400 mg by intermittent IV bolus daily. Available is fluconazole 400 mg in 0.9% sodium chloride (NS) 200 mL to infuse over 2 hr. The nurse should set the IV pump to deliver how many mL/hr? (Round the answer to the nearest tenth/whole number. Use a leading zero if it applies. Do not use a trailing zero.)
Explanation
Given:
Total volume: 200 mL
Time: 2 hours
Steps to solve:
Determine the flow rate:
Set up a proportion to solve for the unknown flow rate (X):
200 mL/2 hr = X mL/1 hr
Cross-multiplying gives us:
200 mL x 1 hr = 2 hr x X mL
Simplifying:
200 = 2X
Solving for X:
X = 200 / 2 = 100 mL/hr
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