Nursing Elites

1. What can cause a low pulse oximetry reading?

• A. Hyperthermia
• B. Increased hemoglobin level
• C. Inadequate peripheral circulation
• D. Low altitudes

Correct answer: C

Rationale: Inadequate peripheral circulation can cause a low pulse oximetry reading by limiting blood flow to the area being measured, leading to inaccurate oxygen saturation readings. Hyperthermia (choice A) is an elevated body temperature and does not directly affect pulse oximetry readings. An increased hemoglobin level (choice B) would actually lead to higher oxygen-carrying capacity in the blood, resulting in normal or increased pulse oximetry readings. Low altitudes (choice D) typically do not cause low pulse oximetry readings unless there are other underlying conditions affecting oxygen levels.

2. A healthcare provider is among the first responders to a mass-casualty incident and does not know what type of personal protective equipment (PPE) is needed. Which of the following actions should the healthcare provider take?

• A. Use basic gloves and a mask.
• B. Choose the highest level of protection equipment available.
• C. Use only respiratory protection.
• D. Ask a colleague for advice.

Correct answer: B

Rationale: In situations where the type of hazard is unknown, the healthcare provider should choose the highest level of protection equipment available. This helps ensure adequate protection against any potential hazards that may be present. Using only basic gloves and a mask (Choice A) may not provide sufficient protection if the hazard is more severe. Opting for respiratory protection only (Choice C) may leave other areas of the body vulnerable to exposure. While asking a colleague for advice (Choice D) is good practice in general, in urgent situations like mass-casualty incidents with unknown hazards, it is crucial to prioritize immediate protection by selecting the highest level of PPE.

3. A healthcare professional is preparing to administer 250 mg of an antibiotic IM. Available is 3 g/5 mL. How many mL would the healthcare professional administer per dose?

• A. 0.4 mL
• B. 0.3 mL
• C. 0.5 mL
• D. 0.6 mL

Correct answer: A

Rationale: To calculate the mL to be administered, convert 250 mg to grams (0.25 g). Then, set up a proportion: (0.25 g / 3 g) x 5 mL = 0.4167 mL, which rounds to 0.4 mL. Therefore, the healthcare professional would administer 0.4 mL per dose. Choice B (0.3 mL) is incorrect because it does not reflect the accurate calculation. Choice C (0.5 mL) is incorrect as it does not consider the correct conversion and calculation. Choice D (0.6 mL) is incorrect as it provides a value higher than the accurate calculation.

4. A nurse is reviewing the medical records of a group of older adult clients. The nurse should identify which of the following as a risk factor for developing infections?

• A. Increased physical activity
• B. Lowered immune system function
• C. Regular health screenings
• D. Proper nutrition

Correct answer: B

Rationale: The correct answer is B: Lowered immune system function. In older adults, a decline in immune system function increases the risk of developing infections. Increased physical activity (choice A) and proper nutrition (choice D) generally support immune function and overall health, reducing the risk of infections. Regular health screenings (choice C) are important for early detection of health issues but do not directly increase the risk of infections.

5. A community health nurse is reviewing primary prevention for West Nile virus with a group of patients in a rural health clinic. What instructions should the nurse include?

• A. Eliminate areas of standing water.
• B. Wear a mask when outdoors.
• C. Ensure food is cooked thoroughly.
• D. Avoid contact with sick individuals.

Correct answer: A

Rationale: The correct answer is A: 'Eliminate areas of standing water.' Standing water provides breeding grounds for mosquitoes, which spread West Nile virus. By eliminating standing water, individuals can reduce the risk of mosquito breeding and the transmission of the virus. Choices B, C, and D are incorrect. Wearing a mask when outdoors, ensuring food is cooked thoroughly, and avoiding contact with sick individuals are not directly related to primary prevention strategies for West Nile virus.

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