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1) Prescribed is Magnesium Sulfate 6 grams, to be infused in 30 minutes using an electronic device
1) Prescribed is Magnesium Sulfate 6 grams, to be infused in 30 minutes using an electronic device. Available is Magnesium sulfate 40 grams in 1 liter of sterile water for injection. At what rate should the electronic infusion device be set to administer the medication in the specified time?
___________________ mL/hr
2) A baby weighs 8 pounds and 4 ounces and is to be fed every three hours. She needs to be fed formula of 60 mL/kg/24 hours. How many milliliters should the baby receive for each feed?
_____________________ mL/feed
3) Prescribed is Heparin 10,000 units/day. Available are vials containing Heparin 100,000 units, with a concentration of 20,000 units/mL. How long will one vial last?
______________________ Days
4) 1 liter of IV fluid was started at 0220 today and is infusing at the correct rate of 90 mL/hr. It is now 0740, how should be left in the bag?
________________ mL
5) Prescribed is Ampicillin 2 gm in 100 mL of D5W to be infused by an infusion device over 20 minutes. The drop factor is 10, what is the rate of infusion?
________________________mL/hr
6) Verapamil is ordered 120 mg po twice a day. The medication cart has Verapamil in 30 mg capsules. How
many would you administer during your 8 hour shift?
_____________ capsules/dose
7) The order is for 125 mg Aldomet to be given every 6 hours IVPB. The medicaiton is diluted in 100 mLs of 5% dextrose. Using a microdrip administration set, what is the flow rate to deliver the volume in 2 hours.
____________________ gtt/min
8) If an IV ran for 7 hours and 30 minutes, how much volume was given if you used a tubing with a drop factor of 15 and the flow rate was 80 mL/hr?
________________ mL
9) The patient is to receive heparin at 1500 units per hour. The IV contains 25,000 units in 250 mL of D5W. Find the rate in mL/hr.
________________ mL/hr
10) An IV mixture is labeled 225 mg/ 250 mL. The healthcare provider prescribes 3 mcg/kg/min for a 50 kg patient. What is the flow rate is a microdrip tubing administration set is used?
___________________ gtt/min
Expert Solution
Drug calculation.
Step-by-step explanation
1) Calculation of ml/hr.
ml/hr = Volume(ml)/Time(hr).
Volume(ml) = Desired dose/Dose in hand * Quantity.
Here
Desired dose = 6 gm.
Dose in hand = 40 gm.
Quantity = 1000 ml (1L).
As per above formula for volume.
Volume(ml) = 6/40 * 1000
= 0.15 * 1000
= 150 ml.
Time (hr) = 0.5 hr (30 min).
So
ml/hr = 150/0.5
= 300 ml/hr.
2) Calculation of ml/feed.
Weight of the patient = 8 pound 6 ounce.
Convert pound to kg for calculation
1 pound = 0.454 kg
So
8 pound = 8 * 0.454
= 3.63 kg.
1 ounce = 0.028 kg.
So
6 ounce = 6 * 0.028
= 0.17 kg.
Weight of the patient = 3.63 + 0.17
= 3.8 kg.
Total feed required for this patient = 60 * 3.8
= 228 ml/24 hr.
every 3 hours is 8 times a day or 24 hr.
ml required per each feed = 228/8
= 28.5 ml/feed.
3) Calculation of number of days vial will last.
10000 units = 1 day.
100000 units = X day.
X * 10000 = 1 * 100000
X = 100000/10000
= 10 days.
4) Calculation of ml.
Total volume(ml) = 1000 ml(1L).
Total time infused = 0740 - 0220
= 5 hr 20 min.
Rate = 90 ml/hr.
Total volume infused in 5 hr 20 min = 90 * 5 + 90/3 ( 20 min = 60 min/3).
= 450 + 30
= 480 ml.
Remaining volume(ml) = 1000 - 480
= 520 ml.
5) Calculation of ml/hr.
ml/hr = Volume(ml)/Time(hr).
Here
Volume(ml) = 100 ml.
Time = 20 min.
Convert min to hr for calculation
1 min = 0.0167 hr.
So
Time(hr) = 20 * 0.0167
= 0.334 hr.
As per above formula
ml/hr = 100/0.334
= 300 ml/hr.
6) Calculation of capsules per dose.
Ordered dose = 120 mg.
Available dose = 30 mg/capsule.
Number of capsules required = Ordered dose/Available dose.
= 120/30
= 4 capsules twice a day.
twice a day is 2 time's a day.
Number of capsules required per dose = 4/2
= 2 capsules/dose.
7) Calculation of gtt/min.
gtt/min = Volume(ml)/Time(min) * Drop factor(gtt/ml).
Here
Volume(ml) = 100 ml.
Time(min) = 120 min (2hr)
Drop factor(gtt/ml) = 60 gtt/ml (microdrip )
As per above formula
gtt/min = 100/120 * 60
= 0.83 * 60
= 49.8 gtt/min.
8) Calculation of volume(ml).
ml/hr = Volume(ml)/Time(hr).
Volume(ml) = ml/hr * Time(hr).
Here
ml/hr = 80 ml/hr.
Time(hr) = 7.5 hr.
SO
Volume(ml) = 80 * 7.5
= 600 ml.
9) Calculation of ml/hr.
ml/hr = Volume(ml)/Time(hr).
Calculation of volume(ml).
Volume(ml) = Desired dose/Dose in hand * Quantity.
Here
Desired dose = 1500 unit.
Dose in hand = 25000 unit.
Quantity = 250 ml.
As per above formula
Volume(ml) = 1500/25000 * 250
= 0.06 * 250
= 15 ml.
Time(hr) = 1 hr.
So
ml/hr = 15 ml/hr.
10) Calculation of gtt/min.
gtt/min = Volume(ml)/Time(min) * Drop factor(gtt/ml).
Volume(ml) = Desire dose/Dose in hand * Quantity.
Here
Ordered dose = 3 mcg/kg/min.
Patient weight = 50 kg
SO
Desire dose = 3 * 50
= 150 mcg/min.
Dose in hand = 225 mcg.
Quantity = 250 ml.
As per above formula
Volume(ml) = 150/225 * 250
= 0.67 * 250
= 167.5 ml.
Time(min) = 1 min.
Drop factor(gtt/ml) = 60 gtt/ml (microdrip).
As per above formula for gtt/min.
gtt/min = 167.5/1 * 60
= 10050 gtt/min.
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