Nokea
After teaching a group of nursing students about indications for linezolid (Zyvox), the instructor determines a need for additional teaching when the students identify which of the following as an indication?
- A. Community-acquired pneumonia (CAP)
- B. Vancomycin-resistant Enterococcus faecium (VREF)
- C. Methicillin-resistant Staphylococcus aureus (MRSA)
- D. Acute otitis media
Correct Answer: D
Rationale: Linezolid is used in the treatment of vancomycin-resistant Enterococcus faecium (VREF), health care? and community-acquired pneumonias, and skin and skin structure infections, including those caused by methicillin-resistant Staphylococcus aureus (MRSA). It is not used to treat otitis media.
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A patient has been prescribed a tetracycline drug for Rocky Mountain spotted fever. The patient also takes antacids. Which of the following effects is likely to occur due to an interaction between the two drugs?
- A. Increased risk of bleeding
- B. Increased action of neuromuscular blocking drugs
- C. Increased profound respiratory depression
- D. Decreased absorption of tetracycline
Correct Answer: D
Rationale: Interaction of antacids with a tetracycline drug causes decreased absorption of tetracycline. Increased action of neuromuscular blocking drugs and increased profound respiratory depression are the result of interaction between neuromuscular blocking drugs and tetracyclines. Increased risk of bleeding is a result of interaction between anticoagulants and tetracyclines.
A nursing instructor is preparing a class on various antibacterial drugs interfering with protein synthesis, with the discussion focusing on quinupristin/dalfopristin. Which of the following medications would the instructor include as interacting with quinupristin/dalfopristin, thus increasing the risk for toxicity? Select all that apply.
- A. Lorazepam (Ativan)
- B. Quinapril (Accupril)
- C. Ritonavir (Norvir)
- D. Atorvastatin (Lipitor)
Correct Answer: A, C, D
Rationale: When quinupristin/dalfopristin is prescribed, it may interact with the following drugs, increasing serum levels and thus the risk for toxicity: antiretrovirals, antineoplastic and immunosuppressant agents, calcium channel blockers, benzodiazepines, and cisapride.
A patient is receiving linezolid. The patient is fond of eating chocolates and coffee, both of which contain tyramine. The nurse would instruct the patient that he is at risk for which of the following should he consume foods containing tyramine while taking linezolid?
- A. Severe hypertension
- B. Drowsiness
- C. Nervousness
- D. Nausea
Correct Answer: A
Rationale: The nurse should inform the patient that if tyramine found in chocolates and coffee interacts with linezolid, the patient will develop an increased risk for severe hypertension. Tyramine-containing foods interacting with linezolid do not cause drowsiness, nervousness, or nausea.
A client is receiving iron therapy for anemia. The prescriber has ordered tetracycline as treatment for the client's infection. Which of the following would be most appropriate for the nurse to do?
- A. Give the drugs at the same time.
- B. Give the iron first, then follow with the tetracycline in 30 minutes.
- C. Separate administration times by 2 hours.
- D. Withhold the iron until the tetracycline therapy is completed.
Correct Answer: C
Rationale: Iron therapy can interfere with the absorption of tetracycline. Therefore, the nurse should give the iron 2 hours before or after administering tetracycline. The two drugs should not be given at the same time. Withholding the iron would be inappropriate.
A patient is ordered to receive neomycin as part of the treatment plan for hepatic coma. Which of the following would be most important for the nurse to assess before administering this drug? Select all that apply.
- A. Ability to swallow
- B. Level of consciousness
- C. Baseline vital signs
- D. Pulmonary function
Correct Answer: A, B
Rationale: During the early stages of hepatic coma, various changes in the level of consciousness may be seen. At times, the patient may appear lethargic and respond poorly to commands. Because of these changes in the level of consciousness, the patient may have difficulty swallowing, and a danger of aspiration is present. If the patient appears to have difficulty taking an oral drug, the nurse should withhold the drug and contact the primary health care provider. Baseline vital signs are important but are not the priority when the patient has hepatic coma. The drug does not affect the patient's respiratory function. There is no infection; therefore, there is no need for culture and sensitivity testing.