1. A loading dose of norepinephrine, in the form of norepinephrine bitartrate, i

Question

1. A loading dose of norepinephrine, in the form of norepinephrine bitartrate, is 0.01 mg/min administered by IV infusion. If a total of 282 milliliters of a norepinephrine solution is delivered over 15 hours, how many drops per minute should be administered? Assume each milliliter consists of 15 drops.

2. Albuterol can be administered by nebulizer or inhaler. Each puff of an inhaler contains 0.09 mg of albuterol. How many milligrams are there in a daily maintenance dose of albuterol if 2 puffs are inhaled every 6 hours?

3. Propranolol is administered by IV for life-threatening arrhythmias. The maximum daily dose is 3 mg. If the solution of propranolol has a concentration of 0.06 mg/ml, how many milliliters are required to administer a maximum dose?

4. Propranolol is administered by IV for life-threatening arrhythmias. The maximum daily dose is 3 mg. If the solution of propranolol has a concentration of 0.06 mg/ml, how many milliliters are required to administer a maximum dose?

Explanation / Answer

Ans 1 :

282 mL in 15 hours = 282/15 = 18.8mL in one hour or 18.8 / 60 = 0.313 mL per minute

Since each mL is made up of 15 drops

The number of drops per minute = 0.313 x 15 = 4.7 drops / min

so 4.7 drops should be administered per minute.

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