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Order: Ampicillin 1 g is added to 50 mL DSW to infuse over 45 minutes. Drop factor: 10 gtt/mL. For IV reconstitute with 10 mL of diluent to get 1 g per 10 mL. (Consider the medication added in the volume of fluid.) Calculate the rate in gtt/min at which the should infuse

A.

18 gtt/min

B.

11 gtt/min

C.

15 gtt/min

D.

13 gtt/min

Answer and Explanation

The Correct Answer is D

Given:
Volume of fluid: 50 mL (DSW) + 10 mL (for reconstitution) = 60 mL
Infusion time: 45 minutes
Drop factor: 10 gtt/mL

Formula:
Flow rate (gtt/min) = (Volume (mL) / Time (min)) x Drop factor (gtt/mL)

Step 1: Calculate the infusion rate in mL/min:
Infusion rate (mL/min) = Volume (mL) / Time (min)
Infusion rate (mL/min) = 60 mL / 45 min
Infusion rate (mL/min) = 1.33 mL/min

Step 2: Calculate the flow rate in gtt/min:
Flow rate (gtt/min) = Infusion rate (mL/min) x Drop factor (gtt/mL)
Flow rate (gtt/min) = 1.33 mL/min x 10 gtt/mL
Flow rate (gtt/min) = 13.3 gtt/min

Step 3: Round to the nearest whole number:
Flow rate (gtt/min) ≈ 13 gtt/min
 


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Related Questions

Correct Answer is B

Explanation

A) Cardizem:
Cardizem (diltiazem) is a calcium channel blocker. Calcium channel blockers work by inhibiting the entry of calcium into the smooth muscle cells of the heart and blood vessels, which helps relax the blood vessels and lower blood pressure.

B) Labetalol:
Labetalol is a beta blocker and an alpha-1 blocker. It works by blocking both beta-adrenergic receptors (which help decrease heart rate and blood pressure) and alpha-1 receptors (which cause vasodilation). This dual action makes labetalol effective in treating high blood pressure, especially in patients with conditions like hypertension and hypertensive emergencies. It reduces heart rate and helps relax blood vessels, improving blood flow.

C) Losartan:
Losartan is an angiotensin II receptor blocker (ARB). ARBs work by blocking the effects of angiotensin II, a hormone that causes blood vessels to constrict. By blocking this effect, losartan helps lower blood pressure and is used in the treatment of hypertension and heart failure.

D) Simvastatin:
Simvastatin is a statin, which is a medication used to lower cholesterol levels. Statins work by inhibiting an enzyme involved in cholesterol production in the liver. They are used primarily to manage high cholesterol and reduce the risk of heart disease, but they do not have an effect on heart rate or blood pressure, unlike beta blockers.

Correct Answer is C

Explanation

Given:

Ordered dose of Heparin: 100,000 units

Concentration of Heparin: 25,000 units/10 mL

Step 1: Set up the proportion:

Desired dose (units) / Volume to administer (mL) = Concentration (units/mL)

Step 2: Substitute the values:

100,000 units / Volume = 25,000 units/10 mL

Step 3: Solve for the unknown volume:

Volume = 100,000 units / (25,000 units/10 mL)

Volume = 100,000 units x (10 mL / 25,000 units)

Volume = 40 mL

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