Nursing Elites

1. In a community health setting, which individual is at highest risk for contracting an HIV infection?

• A. 17-year-old who is sexually active with numerous partners
• B. 34-year-old homosexual in a monogamous relationship
• C. 30-year-old cocaine user who inhales and smokes drugs
• D. 45-year-old who has received two blood transfusions in the past 6 months

Correct answer: C

Rationale: The correct answer is C. Substance abuse, particularly using shared inhalation equipment like needles and pipes for drug inhalation, significantly increases the risk of contracting HIV. Choice A, the 17-year-old with multiple sexual partners, poses a risk of HIV transmission through sexual contact, but it is lower compared to the direct risk associated with sharing drug paraphernalia. Choice B, the 34-year-old homosexual in a monogamous relationship, is at lower risk since being in a monogamous relationship reduces exposure to HIV. Choice D, the 45-year-old who received blood transfusions, is also at lower risk as blood transfusions are now screened for HIV, decreasing the likelihood of transmission through this route.

2. A client with a diagnosis of myocardial infarction (MI) is prescribed nitroglycerin. What is the primary action of this medication?

• A. Increases heart rate
• B. Lowers blood pressure
• C. Dilates coronary arteries
• D. Reduces myocardial oxygen demand

Correct answer: C

Rationale: The correct answer is C: Nitroglycerin dilates coronary arteries, improving blood flow to the heart muscle. This helps increase oxygen supply to the heart tissue. Option A, 'Increases heart rate,' is incorrect because nitroglycerin does not directly affect heart rate. Option B, 'Lowers blood pressure,' is also incorrect as while nitroglycerin can lower blood pressure, its primary action in the context of MI is related to coronary artery dilation. Option D, 'Reduces myocardial oxygen demand,' is not the primary action of nitroglycerin in the treatment of myocardial infarction; its main action is to increase oxygen supply by dilating coronary arteries.

3. What is the homeostatic cellular transport mechanism that moves water from a hypotonic to a hypertonic fluid space?

• A. Filtration
• B. Diffusion
• C. Osmosis
• D. Active transport

Correct answer: C

Rationale: The correct answer is C: Osmosis. Osmosis is the homeostatic cellular transport mechanism that moves water from a hypotonic to a hypertonic fluid space to maintain cellular balance. In osmosis, water moves across a semi-permeable membrane from an area of low solute concentration (hypotonic) to an area of high solute concentration (hypertonic). This process helps regulate the water content inside cells. Choices A, B, and D are incorrect. Filtration involves the movement of solutes and solvents through a membrane due to a pressure difference, diffusion is the movement of solutes from an area of high concentration to low concentration, and active transport requires energy to move substances against their concentration gradient.

4. The client is being taught about managing chronic kidney disease (CKD). Which dietary restriction should be emphasized the most?

• A. Limit consumption of high-fiber foods
• B. Restrict protein intake
• C. Avoid dairy products
• D. Increase fluid intake

Correct answer: B

Rationale: Restricting protein intake is vital in managing chronic kidney disease (CKD) as it helps decrease the kidneys' workload and slows down disease progression. High-fiber foods are generally beneficial for health and should not be limited in CKD management. Dairy products can be consumed moderately unless contraindicated. While adequate fluid intake is crucial, increasing intake excessively may not be suitable for all CKD patients, especially those with fluid restrictions. Therefore, the most crucial dietary restriction to emphasize in CKD management is restricting protein intake.

5. Which nonfood item is the most common cause of respiratory arrest in young children?

• A. Broken rattles
• B. Buttons
• C. Pacifiers
• D. Latex balloons

Correct answer: D

Rationale: The correct answer is D, Latex balloons. Latex balloons can pose a significant choking hazard to young children if inhaled, potentially leading to respiratory arrest. Broken rattles, buttons, and pacifiers are not typically known to cause respiratory arrest in young children. While these items can present choking hazards as well, the most common cause of respiratory arrest among young children is due to inhaling latex balloons.

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