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Order: Levaquin 350 mg is added to 500 mL D5W to infuse over 8 hours. Drop factor: 10 gtt/mL. For IV reconstitute with 1o mL. of diluent to get 100 mg per 10 mL. (Consider the medication added in the volume of fluid.) Calculate the rate in gtt/min at which the IV should infuse

A.

7 gtt/min

B.

11 gtz/min

C.

10 gtt/min

D.

100 gtt/min

Answer and Explanation

The Correct Answer is B

Given:

Volume of fluid: 500 mL

Infusion time: 8 hours

Drop factor: 10 gtt/mL

Medication volume: 10 mL (added to the fluid)

 

Step 1: Calculate the total volume to be infused:

Total volume = Volume of fluid + Volume of medication

Total volume = 500 mL + 10 mL

Total volume = 510 mL

 

Step 2: Calculate the infusion rate in mL/hr:

Infusion rate (mL/hr) = Total volume (mL) / Infusion time (hr)

Infusion rate (mL/hr) = 510 mL / 8 hr

Infusion rate (mL/hr) = 63.75 mL/hr

 

Step 3: Calculate the infusion rate in gtt/min:

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

Infusion rate (gtt/min) = 63.75 mL/hr x 10 gtt/mL / 60 min/hr

Infusion rate (gtt/min) = 10.625 gtt/min

 

Step 4: Round to the nearest whole number:

Infusion rate (gtt/min) ≈ 11 gtt/min


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Related Questions

Correct Answer is B

Explanation

A) Naloxone (Narcan):
Naloxone is the antidote for opioid overdose, not for digoxin toxicity. It works by reversing the effects of opioid drugs such as morphine, heroin, and oxycodone by binding to opioid receptors in the brain. While Naloxone is vital in opioid toxicity, it has no effect on the toxicity of digoxin.

B) Digoxin immune FAB (Digibind):
Digoxin immune FAB (Digibind) is the antidote for digoxin toxicity. It works by binding to the digoxin molecules in the bloodstream, thereby inactivating them and preventing them from exerting their toxic effects on the heart. This treatment is critical in cases of severe digoxin toxicity, particularly when the patient exhibits symptoms such as life-threatening arrhythmias, severe bradycardia, or altered mental status.

C) Vitamin K:
Vitamin K is the antidote for warfarin (Coumadin) toxicity, not digoxin toxicity. It promotes the synthesis of clotting factors in the liver and is used to reverse excessive anticoagulation in cases of bleeding due to warfarin. It has no effect on digoxin toxicity, which requires specific treatment with digoxin immune FAB.

D) Inamrinone (Inocor):
Inamrinone is an inotropic medication used to treat severe heart failure by improving heart contractility. However, it is not used as an antidote for digoxin toxicity. In fact, inamrinone and other inotropic agents may be used cautiously in patients with digoxin toxicity, as they could potentially exacerbate arrhythmias, a known complication of digoxin toxicity.

Correct Answer is D

Explanation

Given:

Ordered dose of Heparin: 9 units/kg/hr

Patient weight: 76 kg

Concentration of Heparin: 50 units/mL

Step 1: Calculate the total dose of Heparin:

Total dose (units/hr) = Ordered dose (units/kg/hr) x Patient weight (kg)

Total dose (units/hr) = 9 units/kg/hr x 76 kg

Total dose (units/hr) = 684 units/hr

Step 2: Calculate the infusion rate in mL/hr:

Infusion rate (mL/hr) = Total dose (units/hr) / Concentration (units/mL)

Infusion rate (mL/hr) = 684 units/hr / 50 units/mL

Infusion rate (mL/hr) = 13.68 mL/hr

Step 3: Round to the nearest tenth:

Infusion rate (mL/hr) ≈ 13.7 mL/hr

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