When monitoring patients on antitubercular drug therapy, the nurse knows that which drug may cause a decrease in visual acuity?

Rifampin

Ethambutol

Streptomycin

Isoniazid

Answer and Explanation

The Correct Answer is A

Choice A rationale:

Rifampin Rifampin is an antitubercular drug that is effective against all strains of Mycobacterium tuberculosis. It works by inhibiting the synthesis of RNA in the bacteria, preventing them from reproducing. However, it does not typically cause a decrease in visual acuity.

Choice B rationale:

Ethambutol Ethambutol is an antitubercular drug that can cause ocular toxicity in the form of visual field changes. It is known to induce toxic optic neuropathy, which is quite common and can lead to a decrease in visual acuity. Patients on Ethambutol therapy are advised to report any changes in visual acuity or eye discomfort immediately to their healthcare provider.

Choice C rationale:

Streptomycin Streptomycin is an aminoglycoside antibiotic used in the treatment of tuberculosis. It works by inhibiting protein synthesis in bacteria. While it can cause side effects such as ototoxicity and nephrotoxicity, it is not typically associated with a decrease in visual acuity.

Choice D rationale:

Isoniazid Isoniazid is a first-line antitubercular drug that works by inhibiting the synthesis of mycolic acids in the cell wall of Mycobacterium tuberculosis. While it can cause peripheral neuropathy, it is not typically associated with a decrease in visual acuity.

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Free Nursing Study Resources

Correct Answer is ["2.5 "]

Explanation

Step 1: Identify the given values. The nurse needs to administer 2.5 mg of hydromorphone. The available amount is 5 mg/5 mL.

Step 2: Set up the calculation. We need to find out how many mL correspond to 2.5 mg. We can set up a proportion using the given values:

5 mL5 mg=x mL2.5 mg

Step 3: Solve for x. Cross-multiply and solve for x:

5 mg×x mL=2.5 mg×5 mL

Step 4: Simplify the equation:

x=5 mg.5 mg×5 mL

Step 5: Calculate the value of x:

x=2.5 mL

So, the nurse should administer 2.5 mL of the hydromorphone elixir.

A. Proton pump inhibitors B. Calcium channel blockers C. Loop diuretics D. Phenytoin

Correct Answer is C

Explanation

Choice A rationale:

Proton pump inhibitors (PPIs) are used extensively for the treatment of gastric acid-related disorders, often over the long term, which raises the potential for clinically significant drug interactions in patients receiving concomitant medications.

However, there is no specific mention of a significant interaction between PPIs and aminoglycosides.

Choice B rationale:

Aminoglycoside antibiotics and calcium channel blockers can interact at the neuromuscular junctions. This interaction is of clinical significance because when these agents are given concurrently during the perioperative period they may lead to respiratory depression or prolonged apnea. However, this is not directly related to the therapeutic effect of aminoglycosides, but rather a side effect of their combined use.

Choice C rationale:

The loop-diuretics (ethacrynic acid, furosemide, bumetamide) and aminoglycoside antibiotics (kanamycin, gentamicin, tobramycin, amikacin, etc.) are important drugs frequently used to treat seriously ill patients. Not uncommonly both types of drugs are given to the same patient exposing that patient to the risk of a hearing loss (ototoxicity)5. In addition, the risk of ototoxicity could be enhanced by the concomitant use of loop diuretics and aminoglycoside antibiotics.

Choice D rationale:

Phenytoin is a medication used to treat seizures. It has a complex pharmacokinetic profile and can interact with many other drugs. However, there is no specific mention of a significant interaction between phenytoin and aminoglycosides.

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When monitoring patients on antitubercular drug therapy, the nurse knows that which drug may cause a decrease in visual acuity?

Nursing Test Bank

Naxlex Comprehensive Predictor Exams

A nurse is preparing to administer hydromorphone 2.5 mg. The available amount is 5 mg/5 mL elixir. How many mL should the nurse administer?

Correct Answer is ["2.5 "]

Explanation

The nurse is reviewing the medication orders for a patient who will be receiving aminoglycoside therapy. Which other medication or medication class, if ordered, would be a potential interaction concern?

Correct Answer is C

Explanation

A nurse is caring for a child who has a penicillin allergy. Which of the following prescriptions should the nurse verify with the provider?

A nurse is documenting an 8-hour intake and output (I&O) record for a patient who consumed 4 oz of juice, 6 oz of tea, a 100 mL cup of soda, an IV bolus of 150 mL, and 8 oz of broth. How many mL of intake should the nurse record on the patient’s chart?

Phenytoin has a narrow therapeutic index. The nurse recognizes that this characteristic indicates which of these?

A nurse is caring for a client who has a fungal infection and has a new prescription for amphotericin Which of the following laboratory values should the nurse report to the provider before initiating the medication?

A nurse is caring for a client who has diabetes insipidus. Which of the following findings should the nurse expect?

A young adult calls the clinic to ask for a prescription for a new flu drug. He says he has had the flu for almost 4 days and just heard about a drug that can reduce the symptoms. What is the nurse’s best response to his request?

A nurse is caring for a client who has recurrent kidney stones and a history of diabetes mellitus. The client is scheduled for an intravenous Pyelogram (IVP). The nurse should collect additional data about which of the following statements made by the client?

During morning medication administration, the nurse discovered an error on the electronic Medication Administration Record (MAR) before the medication was given. What is the appropriate action for this “near-miss”?