A nurse working in radiology administers iodine to a patient who is having a computed tomography (CT) scan.
The nurse working on the oncology unit administers chemotherapy to a patient who has cancer.
At the public health department, a nurse administers a measles mumps rubella vaccine to a 14-month-old child as a routine immunization.
Which branch of pharmacology best describes the actions of the three nurses?

Pharmacodynamics.

Pharmacotherapeutics.

Pharmacoeconomics.

Pharmacokinetics.

Answer and Explanation

The Correct Answer is B

Choice A rationale

Pharmacodynamics is the study of how drugs affect the body, including the mechanisms of action and the relationship between drug concentration and effect. It does not describe the actions of the nurses in this context.

Choice B rationale

Pharmacotherapeutics involves the use of drugs to diagnose, treat, and prevent disease. The actions of the nurses in administering iodine, chemotherapy, and vaccines are examples of pharmacotherapeutics, as they are using drugs for therapeutic purposes.

Choice C rationale

Pharmacoeconomics is the study of the cost and value of drugs and therapies. It does not describe the actions of the nurses in administering medications.

Choice D rationale

Pharmacokinetics is the study of how the body absorbs, distributes, metabolizes, and excretes drugs. It does not describe the actions of the nurses in this context.

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Correct Answer is B

Explanation

Choice A rationale

Ethosuximide (Zarontin) is used to treat absence seizures and is not suitable for emergency control of status epilepticus. It primarily works by affecting the T-type calcium channels in the brain.

Choice B rationale

Diazepam (Valium) is used in the emergency control of status epilepticus due to its fast-acting anticonvulsant properties. It enhances the effect of the neurotransmitter GABA, leading to an inhibitory effect on neuronal activity.

Choice C rationale

Phenobarbital (Luminal) is a barbiturate used for long-term management of epilepsy but is less preferred for immediate emergency control of status epilepticus due to its slower onset of action.

Choice D rationale

Phenytoin (Dilantin) can be used for the maintenance treatment of seizures, but it is less effective for the immediate control of status epilepticus compared to benzodiazepines like diazepam.

A. Increases hypoperfusion of basilar artery vascular bed. B. Decreases hypoperfusion of basilar artery vascular bed. C. Increases hyperperfusion of basilar artery vascular bed. D. Decreases hyperperfusion of basilar artery vascular bed.

Correct Answer is D

Explanation

Choice A rationale

Ergotamine does not increase hypoperfusion. It is used to constrict blood vessels to reduce blood flow.

Choice B rationale

Ergotamine does not decrease hypoperfusion. It is used to constrict blood vessels to reduce blood flow.

Choice C rationale

Ergotamine does not increase hyperperfusion. It is used to constrict blood vessels to reduce blood flow.

Choice D rationale

Ergotamine decreases hyperperfusion by constricting blood vessels in the basilar artery vascular bed, reducing the blood flow to relieve migraine headaches. .

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Naxlex Comprehensive Predictor Exams

A patient is admitted to the emergency department with severe recurrent convulsive seizures.Would the nurse expect to order for the use in emergency control of status epileptic?

Correct Answer is B

Explanation

What is the action of ergotamine?

Correct Answer is D

Explanation

You are writing a care plan for a patient who is taking anticoagulant.What would be an appropriate nursing diagnosis?

What would be the best source of drug information for a nurse?

The nurse is taking a health history on a 38-year-old man who is taking atorvastatin (Lipitor) for high cholesterol.What will the nurse query specifically related to the safety of this drug?

Several nursing students are ordering a poster on the mechanism of the heart.What structure would they label as separating the right half of the heart from the left?

The nurse admits a patient to the unit and learns the patient has recently been diagnosed with chronic renal failure but has not informed the primary care provider of this diagnosis.What is the nurse’s first priority?

The provider has ordered intramuscular (IM) injections of morphine, a narcotic, every 4 hours as needed for pain in a motor vehicle accident victim.The nurse is aware this drug has a high abuse potential.Under what category would morphine be classified?

A patient diagnosed with Heart Failure would like the nurse to explain what the diagnosis means.How will the nurse explain heart failure?

What class of antiarrhythmic drugs blocks potassium channels prolonging phase 3 of the action potential and slowing the rate and conduction of the heart?