Question

Calculate:

Order: Coumadin 7.5 mg

• Supply: Coumadin 5 mg tab
• Give: ________ tablet(s)

Order: Augmentin suspension 200 mg

• Supply: Augmentin 125 mg/ 5 mL
• Give: ________ mL

Order: Lorabid suspension150 mg

• Supply: Lorabid 100 mg/ 5 mL
• Give: ________ mL

Answer 1

To calculate the dosage, we can use the formula

(D/H)*Q = X

Here

D is the desired (ordered)

H is have (supplied)

Q is quantity

(i) D = 7.5 mg

     H = 5mg

     Q = 1tablet

Now

(7.5/5)*1 = Dosage

Dosage = 1.5 tablet = 1 ½ tablet is the dosage orally once a day

(ii) D = 200 mg

     H = 125 mg

     Q = 5 mL

Now

Dosage = (200 mg/125 mg)*(5 mL)

Dosage = 8 mL

(iii) D = 150 mg

     H = 100 mg

     Q = 5 mL

Now

Dosage = (150 mg/100 mg)*(5 mL)

Dosage = 7.5 mL