ATI Fluid Electrolyte and Acid-Base Regulation

Questions 88

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ATI Fluid Electrolyte and Acid-Base Regulation Questions

Question 1 of 5

The baroreceptors, located in the left atrium and in the carotid and aortic arches, respond to changes in the circulating blood volume and regulate sympathetic and parasympathetic neural activity as well as endocrine activities. Sympathetic stimulation constricts renal arterioles, causing what effect?

Correct Answer: D

Rationale: The correct answer is D: Decrease in glomerular filtration. Sympathetic stimulation constricts renal arterioles, leading to decreased blood flow to the kidneys. This reduction in blood flow decreases the glomerular filtration rate, impacting the kidney's ability to filter blood and produce urine. The constriction of renal arterioles does not directly affect the release of aldosterone (choice A), filtration in the Loop of Henle (choice B), or the reabsorption of sodium (choice C). The primary effect of sympathetic stimulation on renal arterioles is to decrease glomerular filtration by reducing blood flow to the kidneys.

Question 2 of 5

A patient's most recent laboratory results show a slight decrease in potassium. The physician has opted to forego drug therapy but has suggested increasing the patient's dietary intake of potassium. Which of the following would be a good source of potassium?

Correct Answer: D

Rationale: The correct answer is D: Bananas. Bananas are a good source of potassium, with around 400-500 mg per banana. Potassium is essential for maintaining proper muscle function, nerve signaling, and fluid balance in the body. Increasing dietary intake of potassium can help address a slight decrease in potassium levels without the need for drug therapy. Apples, asparagus, and carrots are not as high in potassium as bananas, making them less effective choices for addressing a potassium deficiency.

Question 3 of 5

.A nurse assesses a clients peripheral IV site, and notices edema and tenderness above the site. Which action should the nurse take next?

Correct Answer: D

Rationale: The correct action is to stop the infusion of intravenous fluids. Edema and tenderness above the IV site suggest infiltration, where fluid leaks into surrounding tissues. Stopping the infusion prevents further damage and helps prevent complications. Applying cold compresses (A) may not address the underlying issue. Elevating the extremity (B) is helpful for other conditions like swelling due to dependent edema, not infiltration. Flushing the catheter (C) can exacerbate the issue by pushing more fluid into the tissue.

Question 4 of 5

A nurse in the neurologic ICU has orders to infuse a hypertonic solution into a patient with increased intracranial pressure. This solution will increase the number of dissolved particles in the patients blood, creating pressure for fluids in the tissues to shift into the capillaries and increase the blood volume. This process is best described as which of the following?

Correct Answer: B

Rationale: The correct answer is B: Osmosis and osmolality. When a hypertonic solution is infused, it increases the number of dissolved particles in the blood, creating an osmotic pressure gradient. This causes fluids in the tissues to shift into the capillaries, increasing blood volume. Osmosis is the movement of solvent (water) across a semi-permeable membrane to equalize solute concentrations. Osmolality refers to the concentration of solutes in a solution. Hydrostatic pressure (choice A) is the force exerted by a fluid against a wall when it is under pressure, not related to the movement of solutes. Diffusion (choice C) is the movement of solute molecules from an area of high concentration to low concentration, not involving a semi-permeable membrane. Active transport (choice D) requires energy to move molecules across a membrane against their concentration gradient, not the mechanism described in the scenario.

Question 5 of 5

You are performing an admission assessment on an older adult patient newly admitted for end-stage liver disease. What principle should guide your assessment of the patients skin turgor?

Correct Answer: C

Rationale: The correct answer is C: Inelastic skin turgor is a normal part of aging. As people age, their skin loses elasticity and becomes less turgid, which can affect skin turgor assessment. Skin turgor assessment is an important indicator of hydration status, and in older adults, it is normal for the skin to be less elastic. This is due to changes in collagen and elastin fibers in the skin with aging. Choices A, B, and D are incorrect because overhydration is not common among healthy older adults, dehydration causes the skin to appear tented rather than spongy, and skin turgor can still be assessed in patients over 70, although it may be less reliable due to natural changes in skin elasticity with aging.

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