Available: Ketorolac 50 mg/mL. How many mL will you administer? Round to the nearest tenth.
Answers
Q1: Answer is 5ml/hr
This can be calculated by:
Doctors order – 250 units of heparin/hr
Available - Heparin 25,000 units/500 mL of D5W IV solution.
To find the ml/hr use the equation,
ml/hr = Volume of IV fluid in ml × Units in dose
Total number of units in volume time/hr
= 500ml × 250units
25000 units 1 hr
= 5ml/hr
Q2: Answer is 2.5ml/hr
This can be calculated by:
Order – 50mg/hr
Available dose is 2gm/100ml
Covert gm to mg,
1 gram is 1000 mg , Hence 2gm is 2000mg
ml = Dose ordered
Available dose
= 50mg ÷ 2000 mg × 100 ml
= 2.5 ml/hr
Q3: Answer is 167 drops/min
This can be calculated by:
Order - 500 mL of 0.9% NaCl to infuse in 45 minutes.
Drop factor – 15gtt/ml
To find the drops per minute,
Number of drops per minute = Total volume × Drop factor
Time (in mints)
= 500 ml ÷ 45 mints × 15 gtt/m
= 166.66 = 167 drops/min
Q4: Answer is 4.7 ml
This can be calculated by:
Order is 350mg
Available dose is 150mg/2ml
To calculate the ml,
ml = Dose ordered × Quantity in ml
Available dose in mg
= 350 mg × 2ml
150 mg
= 4.66 = 4.7 ml
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