lidocaine

Essentials of Pharmacology for Health Professions
7th Edition
ISBN:9781305441620
Author:WOODROW
Publisher:WOODROW
Chapter6: Safe Dosage Calculations
Section: Chapter Questions
Problem B.3CRQ
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Question
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You have an order for lidocaine 100 mg, how many vials will you need to prepare the order? You currently have 2% lidocaine solution available in stock at the pharmacy
Expert Solution
Step 1

2 % lidocaine means 2000 mg / 100ml which is equal to 20 mg/ml.

Ordered dose = 100 mg

Available dose = 20 mg /ml

Hence desired dose = Ordered dose *quantity /Available dose

      100 mg * 1ml/ 20mg

       =  5 ml

 

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