A client admitted to the hospital with suspected myasthenic crisis was prescribed edrophonium (Tensilon). The nurse misread the dosage and administered a higher dose than prescribed. The doctor has ordered an antidote to be given. What medication does the nurse anticipate administering?

Pyridostigmine

Flumazenil

Acetylcholine

Atropine

Answer and Explanation

The Correct Answer is D

Choice A reason: Pyridostigmine is a medication used to treat myasthenia gravis by inhibiting acetylcholinesterase, but it is not used as an antidote for edrophonium overdose. Pyridostigmine helps improve muscle strength by increasing the amount of acetylcholine available at the neuromuscular junction.

Choice B reason: Flumazenil is an antidote for benzodiazepine overdose and has no effect on edrophonium. It works by competitively inhibiting the actions of benzodiazepines on the GABA receptor.

Choice C reason: Acetylcholine itself is not used as an antidote for edrophonium overdose. Administering acetylcholine would not counteract the effects of excessive acetylcholinesterase inhibition caused by edrophonium.

Choice D reason: Atropine is the correct antidote for edrophonium overdose. Atropine is an anticholinergic drug that can counteract the excessive accumulation of acetylcholine caused by edrophonium, thereby alleviating symptoms such as bradycardia and muscle weakness.

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Correct Answer is C

Explanation

Choice A reason: Blood urea nitrogen (BUN) levels are used to assess kidney function and are not specific to heart failure.

Choice B reason: Hematocrit levels indicate the proportion of red blood cells in the blood and are not specific to heart failure. They are used to assess anemia and other blood disorders.

Choice C reason: Brain natriuretic peptide (BNP) levels are elevated in heart failure. BNP is released by the ventricles in response to increased pressure and volume overload. Monitoring BNP levels helps assess the severity of heart failure and the effectiveness of treatment.

Choice D reason: Hemoglobin levels indicate the oxygen-carrying capacity of the blood and are used to assess anemia but are not specific to heart failure.

A. Beta blockers B. Fever C. Athletism D. Sleeping

Correct Answer is ["A","C","D"]

Explanation

Choice A reason: Beta blockers are medications that can slow the heart rate, leading to sinus bradycardia. They are often prescribed for managing hypertension, arrhythmias, and other cardiovascular conditions. They work by blocking the effects of adrenaline on the heart, which reduces heart rate and blood pressure.

Choice B reason: Fever typically causes an increase in heart rate (tachycardia) rather than a decrease. The body's metabolic rate increases to fight infection, resulting in a higher heart rate.

Choice C reason: Athletism can result in sinus bradycardia because athletes often have a lower resting heart rate due to the increased efficiency of their cardiovascular system. Their hearts pump more effectively, requiring fewer beats per minute to circulate blood throughout the body.

Choice D reason: Sleeping naturally leads to a slower heart rate due to the relaxation of the body and reduced metabolic demands during rest. Sinus bradycardia during sleep is generally considered normal and not a cause for concern.

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A client admitted to the hospital with suspected myasthenic crisis was prescribed edrophonium (Tensilon). The nurse misread the dosage and administered a higher dose than prescribed. The doctor has ordered an antidote to be given. What medication does the nurse anticipate administering?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A client seen in the clinic with shortness of breath and fatigue is being evaluated for a possible diagnosis of heart failure. Which laboratory result will be the most useful to monitor?

Correct Answer is C

Explanation

There are several factors that may cause a patient to present with sinus bradycardia. What are some causes of sinus bradycardia? (Select all that apply)

Correct Answer is ["A","C","D"]

Explanation

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