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Calculate the following dosage using ratio and proportions method. Round answers to the nearest tenth. Order: Tegretol 200 mg p.o.t.i.d.
Available

A.

3 tabs

B.

2 tabs

C.

1 1/2 tabs

D.

4 tabs

Answer and Explanation

The Correct Answer is B

Calculate the dosage using the ratio and proportion:

Given:

Order: 200 mg p.o. t.i.d.

Available: Tegretol 100 mg chewable tablets.

Step 1: Set up the proportion

Available dose (100 mg) : 1 tablet = Ordered dose (200 mg) : x tablets

Step 2: Solve for ?

100 mg : 1 tab = 200 mg : ? tabs

? = 200/100 = 2 tablets


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Related Questions

Correct Answer is B

Explanation

Given:

Volume of fluid: 100 mL

Infusion time: 4 hours

Drop factor: 60 gtt/mL

Formula:

Flow rate (gtt/min) = (Volume (mL) / Time (hr)) x Drop factor (gtt/mL) / 60 min/hr

Step 1: Calculate the infusion rate in mL/hr:

Infusion rate (mL/hr) = Volume (mL) / Time (hr)

Infusion rate (mL/hr) = 100 mL / 4 hr

Infusion rate (mL/hr) = 25 mL/hr

Step 2: Calculate the flow rate in gtt/min:

Flow rate (gtt/min) = (Infusion rate (mL/hr) x Drop factor (gtt/mL)) / 60 min/hr

Flow rate (gtt/min) = (25 mL/hr x 60 gtt/mL) / 60 min/hr

Flow rate (gtt/min) = 1500 gtt/hr / 60 min/hr

Flow rate (gtt/min) = 25 gtt/min

Correct Answer is C

Explanation

To calculate:

1. Convert units:

1 oz = 30 mL

3 oz formula = 3 oz x 30 mL/oz = 90 mL

2 oz juice = 2 oz x 30 mL/oz = 60 mL

2. Calculate total oral intake:

Total oral intake = 10 mL (medication) + 90 mL (formula) + 60 mL (juice) = 160 mL

3. Calculate IV fluid intake:

IV fluid intake = 20 mL/hr x 8 hr = 160 mL

4. Calculate total fluid intake:

Total fluid intake = 160 mL (oral) + 160 mL (IV) = 320 mL

Answer: 320 mL

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