Which condition would indicate to the nurse that the patient has a phenytoin (Dilantin) toxicity?

Nystagmus

Strabismus

Blurry vision

Amblyopia

Answer and Explanation

The Correct Answer is A

A. Nystagmus:

Nystagmus is an involuntary, rhythmic movement of the eyes, which can be rapid and jerky. It is a common neurological manifestation of phenytoin toxicity. Patients experiencing phenytoin toxicity may exhibit horizontal or vertical nystagmus, which can be detected upon physical examination.

B. Strabismus:

Strabismus, also known as crossed eyes or squint, refers to a misalignment of the eyes. While strabismus can have various causes, it is not typically associated with phenytoin toxicity. Therefore, it is less likely to indicate phenytoin toxicity compared to nystagmus.

C. Blurry vision:

Blurry vision, or visual disturbances, can occur in patients experiencing phenytoin toxicity. However, it is a non-specific symptom and can be observed in various other conditions as well. Patients with phenytoin toxicity may experience blurry vision, double vision (diplopia), or other visual disturbances due to the effects of the medication on the central nervous system.

D. Amblyopia:

Amblyopia, also known as lazy eye, is a condition characterized by reduced vision in one or both eyes. It is typically associated with visual development during childhood and is not directly related to phenytoin toxicity. Therefore, it is less likely to indicate phenytoin toxicity compared to nystagmus or other neurological manifestations.

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Correct Answer is ["0.6"]

Explanation

To calculate the dose of diazepam in mL, the nurse should use the formula:

Dose (mL) = Desired dose (mg) / Available dose (mg/mL)

Plugging in the values from the question, we get:

Dose (mL) = 3 mg / 5 mg/mL

Simplifying, we get:

Dose (mL) = 0.6 mL

Therefore, the nurse should administer 0.6 mL of diazepam IM.

A. "These drugs inhibit the action of acetylcholine B. "These drugs help you urinate." C. "These drugs will decrease your eye pressure." D. "These drugs will assist in lowering your heart rate."

Correct Answer is A

Explanation

A. "These drugs inhibit the action of acetylcholine":

This response is accurate. Anticholinergic medications work by blocking the action of acetylcholine, a neurotransmitter involved in various functions in the body, including muscle control. In Parkinson's disease, there is an imbalance between dopamine and acetylcholine, leading to motor symptoms such as tremors and rigidity. By inhibiting the action of acetylcholine, anticholinergic drugs help rebalance neurotransmitter activity and alleviate some of the motor symptoms associated with Parkinson's disease.

B. "These drugs help you urinate":

This statement is not directly related to the use of anticholinergic medications in Parkinson's disease. While some anticholinergic drugs can indeed relax the smooth muscle of the bladder and improve urinary symptoms, this is not the primary indication for their use in Parkinson's disease.

C. "These drugs will decrease your eye pressure":

While anticholinergic medications can be used to dilate the pupils and decrease intraocular pressure, this is not typically the reason for their use in Parkinson's disease. While some anticholinergic medications may have ocular effects, they are primarily used to address motor symptoms associated with Parkinson's disease.

D. "These drugs will assist in lowering your heart rate":

While some anticholinergic medications may have effects on heart rate by blocking parasympathetic nervous system activity, this is not the primary indication for their use in Parkinson's disease. The focus of anticholinergic therapy in Parkinson's disease is primarily on addressing motor symptoms rather than cardiovascular effects.

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Which condition would indicate to the nurse that the patient has a phenytoin (Dilantin) toxicity?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is preparing to administer diazepam 3 mg IM. The amount available is diazepam for injection 5 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest tenth. Use a leading zero if it applies. Do not use a trailing zero.)

Correct Answer is ["0.6"]

Explanation

A patient with Parkinson's disease asks the nurse why anticholinergics are used in the treatment. Which response by the nurse is most accurate?

Correct Answer is A

Explanation

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