ATI RN
ATI Fluid and Electrolytes
1. Under normal circumstances, the kidneys provide the greatest means of water loss. Which organ provides the second greatest means of water loss?
- A. Skin
 - B. Lungs
 - C. Intestines
 - D. Muscles
 
Correct answer: A
Rationale: The correct answer is A: Skin. After the kidneys, the skin is the second largest route of water loss through perspiration. Choice B, Lungs, is incorrect as the lungs primarily exchange gases and do not play a significant role in water loss. Choice C, Intestines, is also incorrect as water loss through the intestines is minimal since most water is reabsorbed during digestion. Choice D, Muscles, is incorrect as muscles are not a major source of water loss in the body.
2. The nurse assessing skin turgor in an elderly patient should remember that:
- A. Overhydration causes the skin to tent.
 - B. Dehydration causes the skin to appear edematous and spongy.
 - C. Inelastic skin turgor is a normal part of aging.
 - D. Normal skin turgor is moist and boggy.
 
Correct answer: C
Rationale: Inelastic skin turgor is a normal part of aging. Dehydration, not overhydration, causes inelastic skin with tenting. Overhydration, not dehydration, causes the skin to appear edematous and spongy. Normal skin turgor is dry and firm. Choice A is incorrect because overhydration does not cause the skin to tent; it is dehydration that leads to tenting. Choice B is incorrect because dehydration, not overhydration, causes the skin to appear edematous and spongy. Choice D is incorrect because normal skin turgor is dry and firm, not moist and boggy.
3. A newly graduated nurse is admitting a patient with a long history of emphysema. The new nurses preceptor is going over the patients past lab reports with the new nurse. The nurse takes note that the patients PaCO2 has been between 56 and 64 mm Hg for several months. The preceptor asks the new nurse why they will be cautious administering oxygen. What is the new nurses best response?
- A. The patients calcium will rise dramatically due to pituitary stimulation.
 - B. Oxygen will increase the patients intracranial pressure and create confusion.
 - C. Oxygen may cause the patient to hyperventilate and become acidotic.
 - D. Using oxygen may result in the patient developing carbon dioxide narcosis and hypoxemia.
 
Correct answer: D
Rationale:
4. Where is the largest volume of water in the body located?
- A. Plasma
 - B. The fluid inside the cells
 - C. Interstitial fluid
 - D. Lymph
 
Correct answer: B
Rationale: The correct answer is B. The largest volume of water in the body is found inside the cells, known as intracellular fluid. This fluid makes up the majority of the body's total water content. Choices A, C, and D are incorrect because while plasma, interstitial fluid, and lymph are important components of the body's fluid compartments, they do not contain the largest volume of water in the body.
5. A nurse teaches a client who is prescribed a central vascular access device. Which statement should the nurse include in this clients teaching?
- A. You will need to wear a sling on your arm while the device is in place
 - B. There is no risk of infection because sterile technique will be used during insertion.
 - C. . Ask all providers to vigorously clean the connections prior to accessing the device.
 - D. You will not be able to take a bath with this vascular access device.
 
Correct answer: C
Rationale:
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