Nursing Elites

1. Which dietary supplement is often recommended for patients taking statins to lower cholesterol?

• A. Iron
• B. Coenzyme Q10
• C. Calcium
• D. Magnesium

Correct answer: B

Rationale: Coenzyme Q10 is often recommended for patients on statins because it may help reduce muscle pain, a common side effect of these medications. Iron (Choice A) is not typically recommended for patients taking statins to lower cholesterol. Calcium (Choice C) and Magnesium (Choice D) are not specifically indicated for addressing muscle pain associated with statin use, making them less suitable choices in this scenario.

2. A nurse at a health fair is assessing the weight status of four clients. Which of the following clients is classified as overweight?

• A. A female client who has a body mass index of 24
• B. A male client who has a body mass index of 29
• C. A female client who has a waist circumference of 101.6 cm (40 in)
• D. A male client who has a waist circumference of 96.52 cm (38 in)

Correct answer: B

Rationale: A body mass index (BMI) of 25 or higher is classified as overweight. Choice B, a male client with a BMI of 29, falls into the overweight category. Choice A, a female client with a BMI of 24, is within the normal range. Choices C and D provide information on waist circumference, which is not sufficient to determine if a client is overweight or not, as waist circumference alone does not provide the overall picture of weight status compared to BMI.

3. What is the glomerular filtration rate for patients with stage 5 chronic kidney disease (CKD)?

• A. Less than 15 mL/min/1.73 m²
• B. Less than 30 mL/min/1.73 m²
• C. Less than 90 mL/min/1.73 m²
• D. Less than 125 mL/min/1.73 m²

Correct answer: A

Rationale: In patients with stage 5 chronic kidney disease (CKD), also known as end-stage renal disease, the kidney function is significantly compromised. This severe condition is characterized by a glomerular filtration rate (GFR) of less than 15 mL/min/1.73 m², as correctly stated in choice A. Choices B, C, and D suggest higher GFR values, which are not indicative of stage 5 CKD. Specifically, a GFR of less than 30 mL/min/1.73 m² indicates stage 4 CKD, less than 90 mL/min/1.73 m² signifies stage 3 CKD, and a typical healthy individual usually has a GFR of around 125 mL/min/1.73 m², which is far above the GFR for stage 5 CKD.

4. Which chemical structure is represented by glycerol combined with two fatty acids?

• A. Compound lipids
• B. Monoglycerides
• C. Diglycerides
• D. Structural lipids

Correct answer: C

Rationale: The correct answer is C: Diglycerides. A diglyceride is a glycerol molecule combined with two fatty acids. This is a common form of fat during digestion and absorption. Choice A, Compound lipids, is incorrect because these lipids are composed of simple lipids plus additional compounds, which is not the case with a glycerol molecule combined with two fatty acids. Choice B, Monoglycerides, is incorrect because these are glycerol molecules combined with only one fatty acid, not two. Lastly, choice D, Structural lipids, is incorrect because these are major components of cell membranes and do not directly relate to the combination of glycerol and two fatty acids.

5. Each statement is true regarding oral exposure to fermentable carbohydrates, except one. Which is the exception?

• A. Longer exposure leads to an increased risk of demineralization
• B. Longer exposure increases the opportunity for remineralization
• C. The Stephan curve illustrates pH changes within plaque after rinsing with a sugar solution
• D. The critical pH at which enamel decalcification occurs is 5.5 or less

Correct answer: B

Rationale: All the statements above are accurate about oral exposure to fermentable carbohydrates, except for option B. In fact, longer exposure to these carbohydrates decreases the opportunity for remineralization. This is because the process of demineralization, in which minerals are lost from the tooth enamel, is sped up by the presence of fermentable carbohydrates. The Stephan curve (option C) is a graph that demonstrates how the pH of dental plaque changes after a sugar rinse, usually dropping (becoming more acidic), which can lead to enamel decalcification. Option D is also accurate, as a pH of 5.5 or lower is the critical point at which enamel starts to decalcify.

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