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COMPLEX MED MATH QUESTIONS AND ANSWERS| SHADOW HEALTH
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COMPLEX MED MATH QUESTIONS AND ANSWERS| SHADOW HEALTH| Ultimate Guide for Those Dosage Calculations. Download Now.
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Complex / Med Math Questions1. Problem type: IV infusion rate + infusion pump
Medication: azithromycin
PROBLEM
Suppose Mrs. Turner’s orders call for 500 mg of azithromycin to be administered intravenously for
community-acquired pneumonia. The solution has been diluted to a concentration of 2 mg/mL and
needs to be administered over 1 hour.
At what rate should the infusion pump be set?HINT
Start by figuring out how many milliliters will be needed to administer the ordered dose.
SAMPLE SOLUTION
1. Determine how many milliliters of the concentration will be delivered to administer the
ordered dose.
500 mg x 1 mL = 250 mL
2 mg
2. Divide the total number of mL needed to deliver the 500 mg by the expected
duration of 1 hour.
250 mL = 250 mL/hr
1 hr
ANSWER
Number: 250
Units / Rate: mL/hr
, 2. Problem type: Dosage calculation + Stock on hand
Medication: venlafaxine
PROBLEM
Mrs. Turner’s daily medications include venlafaxine extended-release, 150 mg, bymouth, once a
day. However, the hospital pharmacy only carries 75 mg extended-release tablets.
How many tablets of venlafaxine extended-release should be administered to her?HINT
You can use the equation below, where X is the number of tablets that should beadministered.
D (ordered dose) x Quantity = XH
(dose on hand)
SAMPLE SOLUTION
1. Determine what information you have.
D (ordered dose) = 150 mgH
(dose on hand) = 75 mg Q
(quantity) = 1 tablet
2. Plug into the equation and solve.
D (150 mg) x 1 tablet = XH
(75 mg)
X = 2 tablets
ANSWER
Number: 2
Units: tablets
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