Nokea
Which of the following lab values is associated with a decreased risk of cardiovascular disease?
- A. high HDL cholesterol
- B. low HDL cholesterol
- C. low total cholesterol
- D. low triglycerides
Correct Answer: A
Rationale: High HDL cholesterol and low LDL cholesterol are associated with a decreased risk of cardiovascular disease.
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Which of the following is not a function of parathyroid hormone?
- A. moving calcium from bones to the bloodstream
- B. promoting renal tubular reabsorption of phosphorus
- C. promoting renal tubular reabsorption of calcium
- D. enhancing renal production of vitamin D metabolites
Correct Answer: B
Rationale: Parathyroid hormone depresses renal tubular reabsorption of phosphorus. All of the other choices are functions of parathyroid hormone.
A nurse is caring for a patient who has experienced burns to the right lower extremity. According to the Rule of Nines which of the following percents most accurately describes the severity of the injury?
- A. 36%
- B. 27%
- C. 18%
- D. 9%
Correct Answer: C
Rationale: Each lower extremity is scored as 18% according to the Rule of Nines, which estimates burn severity.
Which of the following allergies might be a contraindication for a client to receive contrast enhancement for intracranial computed tomography?
- A. Penicillin
- B. Iodine
- C. Erythromycin
- D. Aspirin
Correct Answer: B
Rationale: Iodine allergy is a contraindication for contrast media, as it can cause severe allergic reactions, unlike the other allergies listed.
A Roman Catholic client is preparing to have magnetic resonance imaging. He wants to wear his metal crucifix pendant while he is receiving the test. Which of the following is an appropriate response by the nurse?
- A. Because it gives you comfort, you may wear it
- B. It is a violation of religious rights to forbid it
- C. I am sorry, but it is not safe for you to wear the crucifix during this test
- D. You may wear it because it is important to you
Correct Answer: C
Rationale: No metal objects, including religious pendants, can be worn during MRI due to safety risks from the strong magnet. Alternative spiritual support should be offered.
Which of the following clients require airborne precautions?
- A. a client with fever, chills, vomiting, and diarrhea
- B. a client suspected of varicella (chickenpox)
- C. a client with abdominal pain and purpura
- D. a client diagnosed with AIDS
Correct Answer: B
Rationale: Chickenpox (varicella) is an acute, infectious, airborne illness that requires others in direct contact to wear a respirator mask.