A nurse is caring for a client who is taking digoxin for heart failure and develops indications of severe digoxin toxicity. Which of the following medications should the nurse prepare to administer?
Flumazenil
Acetylcysteine
Naloxone
Fab antibody fragments
The Correct Answer is D
A) Flumazenil: Flumazenil is an antidote used to reverse the effects of benzodiazepines, which are central nervous system depressants. It is not effective in treating digoxin toxicity, as it does not interact with the cardiac glycoside effects of digoxin.
B) Acetylcysteine: Acetylcysteine is primarily used as an antidote for acetaminophen overdose and to help manage mucus in respiratory conditions. It has no effect on digoxin toxicity and would not be appropriate for treating this condition.
C) Naloxone: Naloxone is an opioid antagonist used to reverse the effects of opioid overdose. Like flumazenil and acetylcysteine, naloxone is not effective in addressing digoxin toxicity and does not counteract the effects of cardiac glycosides.
D) Fab antibody fragments: Fab antibody fragments, also known as Digoxin-specific antibody fragments (Digibind or DigiFab), are the appropriate treatment for severe digoxin toxicity. These fragments bind to digoxin, neutralizing its effects and allowing the body to eliminate it safely. This is the most effective and specific treatment for life-threatening digoxin toxicity.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["0.3"]
Explanation
Calculating the Lidocaine Dose
Problem: Administer 50 mg of lidocaine IV bolus. The available concentration is 200 mg/mL.
Steps:
Set up a proportion:
We want to find the number of milliliters (mL) needed.
We know the desired dose (50 mg) and the concentration of the medication (200 mg/mL).
Proportion:
x mL / 50 mg = 1 mL / 200 mg
Cross-multiply:
200x = 50
Solve for x:
x = 50 / 200
x = 0.25
Answer: The nurse should administer 0.3 mL of lidocaine per dose(rounded to the nearest tenth).
Correct Answer is ["0.5"]
Explanation
Calculating the Digoxin Dose
Problem: Administer 125 mcg of digoxin PO daily. The available concentration is 0.25 mg/tablet.
Steps:
Convert mcg to mg:
125 mcg x (1 mg / 1000 mcg) = 0.125 mg
Set up a proportion:
We want to find the number of tablets needed.
We know the desired dose (0.125 mg) and the concentration of the medication (0.25 mg/tablet).
Proportion:
x tablets / 0.125 mg = 1 tablet / 0.25 mg
Cross-multiply:
0.25x = 0.125
Solve for x:
x = 0.125 / 0.25
x = 0.5
Answer: The nurse should administer 0.5 tablets of digoxin per dose.
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