A nurse is preparing to administer ondansetron 4 mg IM stat.
The amount available is ondansetron for injection 2 mg/mL. How many mL should the nurse administer? (Round the answer to the nearest whole number.
(Use a leading zero if it applies. Do not use a trailing zero)
The Correct Answer is ["2"]
Step 1 is: Determine the concentration of the medication available. 2 mg/mL.
Step 2 is: Calculate the volume needed to administer 4 mg. 4 mg ÷ 2 mg/mL = 2 mL. The nurse should administer 2 mL.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is B
Explanation
Choice A rationale
Rifampin does not cause amenorrhea when taken with oral contraceptives. However, it can reduce the effectiveness of hormonal contraceptives, including oral contraceptives, due to its enzyme-inducing properties. This means that women taking rifampin should use an alternative or additional non-hormonal method of contraception to prevent pregnancy.
Choice B rationale
Rifampin can cause discoloration of body fluids, including tears, which can stain contact lenses. This is why it is recommended to wear glasses instead of contact lenses while taking this medication.
Choice C rationale
A yellow tint to the skin is not an expected reaction to rifampin. However, rifampin can cause a harmless red-orange discoloration of body fluids such as urine, sweat, saliva, and tears.
Choice D rationale
Lifelong treatment with rifampin is not necessary. The duration of treatment for active tuberculosis typically ranges from 6 to 9 months, depending on the specific treatment regimen and the patient’s response to therapy.
Correct Answer is C
Explanation
Choice A rationale
A red and beefy tongue is not a symptom of digoxin toxicity. This symptom is more commonly associated with vitamin B12 deficiency or other nutritional deficiencies.
Choice B rationale
Constipation is not a typical symptom of digoxin toxicity. Digoxin toxicity primarily affects the gastrointestinal system with symptoms such as nausea, vomiting, and diarrhea, rather than causing constipation.
Choice C rationale
Yellow vision, or xanthopsia, is a classic symptom of digoxin toxicity. Digoxin can cause visual disturbances, including seeing halos around lights and a yellow tint to vision, due to its effects on the optic nerve.
Choice D rationale
Gaining weight is not a symptom of digoxin toxicity. Weight gain is more commonly associated with fluid retention in conditions such as heart failure, which digoxin is used to treat.
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