ATI RN
ATI Fluid and Electrolytes
1. What is the fluid that surrounds the cells called?
- A. plasma
 - B. interstitial fluid
 - C. intracellular fluid
 - D. edema
 
Correct answer: B
Rationale: The correct answer is interstitial fluid. Interstitial fluid is the fluid that surrounds and fills the spaces between cells, facilitating nutrient and waste exchange. Plasma, referred to in choice A, is the liquid part of blood. Choice C, intracellular fluid, is the fluid inside cells. Choice D, edema, is an abnormal accumulation of fluid in interstitial spaces, causing swelling.
2. Which electrolyte is important in the formation of the thyroid hormones?
- A. Sodium
 - B. Iodine
 - C. Iron
 - D. Chloride
 
Correct answer: B
Rationale: Iodine is the correct answer because it is essential for the synthesis of thyroid hormones. The thyroid gland incorporates iodine into thyroid hormones such as thyroxine (T4) and triiodothyronine (T3). These hormones are crucial for regulating metabolism, growth, and development. Sodium, iron, and chloride are not directly involved in the formation of thyroid hormones, making them incorrect choices.
3. A home care nurse prepares to administer intravenous medication to a client. The nurse assesses the site and reviews the clients chart prior to administering the medication: Client: Thomas Jackson DOB: 5/3/1936 Gender: Male January 23 (Today): Right uppe
- A. Notify the health care provider
 - B. . Administer the prescribed medication.
 - C. Discontinue the PICC
 - D. Switch the medication to the oral route
 
Correct answer: B
Rationale:
4. You are an emergency-room nurse caring for a trauma patient. Your patient has the following arterial blood gas results: pH 7.26, PaCO2 28, HCO3 11 mEq/L. How would you interpret these results?
- A. Respiratory acidosis with no compensation
 - B. Metabolic alkalosis with a compensatory alkalosis
 - C. Metabolic acidosis with no compensation
 - D. Metabolic acidosis with a compensatory respiratory alkalosis
 
Correct answer: D
Rationale:
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?
- A. Overhydration is common among healthy older adults.
 - B. Dehydration causes the skin to appear spongy
 - C. Inelastic skin turgor is a normal part of aging
 - D. Skin turgor cannot be assessed in patients over 70.
 
Correct answer: C
Rationale:
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