Nursing Elites

1. Each statement is true of calcium within saliva, except one. Which is the exception?

• A. Saliva is supersaturated with calcium.
• B. Saliva is a source of calcium to mineralize an immature or demineralized enamel surface.
• C. Calcium and phosphate in saliva provide a buffering action.
• D. Calcium within saliva increases dental caries.

Correct answer: D

Rationale: The correct answer is D. Calcium within saliva does not increase dental caries; in fact, the buffering action provided by calcium and phosphate in saliva inhibits caries formation by preventing the dissolution of enamel by plaque biofilm. Choice A is correct as saliva is indeed supersaturated with calcium. Choice B is correct as saliva serves as a source of calcium to mineralize an immature or demineralized enamel surface. Choice C is correct as calcium and phosphate in saliva do provide a buffering action to protect teeth from acids.

2. Why are blood glucose levels high in type 1 diabetes?

• A. The urinary excretion of glucose is impaired
• B. The lean body mass is metabolized to produce glucose via gluconeogenesis
• C. The absorption of glucose from the gastrointestinal tract is more efficient
• D. There is insufficient insulin to facilitate the transport of glucose into the cells

Correct answer: D

Rationale: In type 1 diabetes, the body's immune system destroys the beta cells in the pancreas that produce insulin. This leads to an insufficient amount of insulin, which is required to facilitate the transport of glucose into the cells. Consequently, blood glucose levels remain high. The other options are incorrect. Option A is incorrect because urinary excretion of glucose does not directly contribute to blood glucose levels. Option B is incorrect because, while gluconeogenesis does produce glucose, it is not the cause of high glucose levels in type 1 diabetes. Option C is incorrect because absorption efficiency of glucose from the gastrointestinal tract does not affect the amount of insulin available to transport glucose into cells.

3. A nurse is planning care for a client who has ascites secondary to liver disease. Which of the following interventions should the nurse include in the plan of care?

• A. Reduce complex carbohydrates to 30% of total calories.
• B. Restrict protein intake to less than 0.8 g/kg/day.
• C. Decrease daily caloric intake by 20%.
• D. Limit sodium to 2000 mg or less per day.

Correct answer: D

Rationale: The correct answer is to limit sodium to 2000 mg or less per day. Ascites, which is the abnormal accumulation of fluid in the abdominal cavity, is commonly associated with liver disease. Limiting sodium intake helps manage fluid retention by reducing the fluid accumulation in the abdomen. Choices A, B, and C are incorrect because reducing complex carbohydrates, restricting protein intake, or decreasing caloric intake are not the primary interventions for managing ascites in liver disease.

4. Why does Anita stand in front of the mirror while performing a Breast Self-Examination (BSE)?

• A. To check for unusual discharges from the breast
• B. To check for any obvious malignancy
• C. To observe the size and contour of the breast
• D. To check for thickness and lumps in the breast

Correct answer: C

Rationale: When performing a Breast Self-Examination (BSE), one of the reasons for standing in front of a mirror is to observe the size and contour of the breast (Choice C). This helps in identifying any visible changes or abnormalities such as dimpling, puckering, or changes in the size and shape of the breasts. While unusual discharges (Choice A) and thickness or lumps (Choice D) can be part of the changes a person might notice during a BSE, these are typically identified by palpation or by squeezing the nipple for discharge, not by just looking in the mirror. Choice B, checking for obvious malignancy, is too vague and not specific enough as malignancy is often not visible to the naked eye.

5. What is the role of fat in digestion?

• A. Digest fats in the stomach
• B. Emulsify fats in the small intestine
• C. Transport fats through the circulatory system
• D. Split fats into smaller components

Correct answer: B

Rationale: The correct answer is B: Emulsify fats in the small intestine. Bile emulsifies fats in the small intestine, breaking them down into smaller droplets that can be more easily digested by enzymes like lipase. Choice A is incorrect as fats are not digested in the stomach but rather in the small intestine. Choice C is incorrect as fats are transported through the lymphatic system instead of the circulatory system. Choice D is incorrect as fats are broken down into smaller components through emulsification, not splitting.

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