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After teaching a group of students about tetracyclines, the instructor determines that the teaching was successful when the students identify which of the following as a true statement? Select all that apply.
- A. Tetracyclines are broad-spectrum antibiotics.
- B. Tetracyclines may cause permanent discoloration of the teeth in children.
- C. Tetracyclines can be used when penicillins are contraindicated.
- D. Tetracyclines are contraindicated in children younger than 6 years.
- E. Tetracyclines are used to treat Rocky Mountain spotted fever.
Correct Answer: A, B, C, E
Rationale: Tetracyclines are broad-spectrum antibiotics used to treat rickettsial disease, such as Rocky Mountain spotted fever, and when the use of penicillins is contraindicated. Tetracyclines are not given to children younger than 9 years of age unless absolutely necessary because these drugs may cause permanent yellow-gray-brown discoloration of the teeth.
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After teaching a group of students about tetracyclines, the instructor determines that the teaching was successful when the students identify which of the following as a true statement? Select all that apply.
- A. Tetracyclines are broad-spectrum antibiotics.
- B. Tetracyclines may cause permanent discoloration of the teeth in children.
- C. Tetracyclines can be used when penicillins are contraindicated.
- D. Tetracyclines are contraindicated in children younger than 6 years.
- E. Tetracyclines are used to treat Rocky Mountain spotted fever.
Correct Answer: A, B, C, E
Rationale: Tetracyclines are broad-spectrum antibiotics used to treat rickettsial disease, such as Rocky Mountain spotted fever, and when the use of penicillins is contraindicated. Tetracyclines are not given to children younger than 9 years of age unless absolutely necessary because these drugs may cause permanent yellow-gray-brown discoloration of the teeth.
A patient is scheduled for abdominal surgery and is ordered to receive kanamycin as part of the bowel preparation. The patient asks the nurse why he is getting this drug. Which response by the nurse would be most appropriate?
- A. You have an infection now and will probably have one after surgery, so this will help control it.
- B. We need to lower the levels of ammonia in your bloodstream to prevent problems.
- C. The drug helps eliminate bacteria so that your GI tract is as clean as possible for surgery.
- D. This is to help prevent you from developing any blood clots during and after the surgery.
Correct Answer: C
Rationale: Kanamycin and neomycin are used before surgery to reduce intestinal bacteria. It is thought that this reduces the possibility of abdominal infection that may occur after surgery on the bowel. By destroying bacteria in the gut and washing it out with laxatives or enemas, the surgical area becomes as clean as possible before the operation. The drug is not used to control an infection preoperatively. It does help to reduce blood ammonia levels with hepatic coma, but this is not the reason for its use with this patient. The drug has no effect on preventing blood clots postoperatively.
A middle-aged patient has been prescribed tetracycline as part of his treatment of H. pylori. The patient has a history of heart disease for which he is receiving digoxin. Given his history and current medications, the patient is at risk for which of the following conditions?
- A. Respiratory depression
- B. Decreased effectiveness of tetracycline
- C. Prolonged clotting times
- D. Risk of digoxin toxicity
Correct Answer: D
Rationale: When digoxin interacts with tetracyclines, the patient is at risk for digoxin toxicity. Respiratory depression is an effect observed when neuromuscular blocking drugs interact with lincosamides. A decrease in the effectiveness of tetracycline is seen when the drug is taken with antacids, dairy products, or iron. An increased risk for bleeding with prolonged clotting times is noted when tetracycline is given with anticoagulants.
A middle-aged patient has been prescribed tetracycline as part of his treatment of H. pylori. The patient has a history of heart disease for which he is receiving digoxin. Given his history and current medications, the patient is at risk for which of the following conditions?
- A. Respiratory depression
- B. Decreased effectiveness of tetracycline
- C. Prolonged clotting times
- D. Risk of digoxin toxicity
Correct Answer: D
Rationale: When digoxin interacts with tetracyclines, the patient is at risk for digoxin toxicity. Respiratory depression is an effect observed when neuromuscular blocking drugs interact with lincosamides. A decrease in the effectiveness of tetracycline is seen when the drug is taken with antacids, dairy products, or iron. An increased risk for bleeding with prolonged clotting times is noted when tetracycline is given with anticoagulants.
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.