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Med Math Practice Questions with Correct Answer2
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Med Math Practice Questions with Correct Answers1 gram = X mg Correct Answer-1 gram = 1000 mg
1 mg = X gm Correct Answer-1 mg - 0.001 gm
1 mg = X mcg Correct Answer-1 mg = 1000 mcg
1 mcg = X mg Correct Answer-1 mcg = 0.001 mg
1 kg = X lbs Correct Answer-1 kg = 2.2 lbs
1 tsp = X mL Correct Answer-1 tsp = 5 mL
1 gr = X mg Correct Answer-1 gr = 60 mg
Doctor has ordered 500 mg and capsules come in 250 mg per capsule -
how many capsules are needed? Correct Answer-set up the problem as
250mg/1 capsule = 500 mg/x capsules
cross multiple 250mgX = 500mg and solve for x by dividing 500/250 =
X x =2
2 capsules required for 500 mg
8 mg is ordered. It is available as 10 mg/mL. How many mL should be
administered? Correct Answer-Answer 0.8 mL
, calculate by dividing the dose ordered/available concentration in 1 mL
8 mg/10mg/mL = 8/10mL = 0.8mL
1000 mL solultion is ordered to infuse over 8 hours. How many mL/hr
should the IV flow rate? Correct Answer-Set up calculation as 1000 mL/
8 hr= X mL/1 hr and cross multiply 8hr * X mL = 1000 mL x 1 hr ;
solve for x = X mL = 1000 mL x 1 hr/8 hrs = 125 mL/hr
What is drip rate? Correct Answer-number of drops (gtts) per min to be
infused (gtts/min)
What is drip factor? Correct Answer-The Drip Factor of the IV tubing is
determined by the manufacturer. This information can be found on the
IV tubing packaging. The Drip Factor is the number of drops that equal
1 mL of solution.
Example of a Drip Factor:
A Drip Factor of 15 gtts/mL means it will take 15 gtts of the IV solution
to deliver 1 mL of the IV solution.
How to calculate IV drip rate? Correct Answer-IV Drip Rate (gtts/min)
= (Volume to be infused (mL) X Drip Factor of tubing gtts/mL)/time (in
min) to be infused
Calculate the IV Drip Rate when 1000 mL of D5W ordered to be
administered over 8 hours. The IV tubing drip factor is 10 gtts/mL.
Correct Answer-First convert hrs to mins 8 hrs = 480 minutes
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