ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. You are the nurse caring for a 77-year-old male patient who has been involved in a motor vehicle accident. You and your colleague note that the patients labs indicate minimally elevated serum creatinine levels, which your colleague dismisses. What can this increase in creatinine indicate in older adults?
- A. Substantially reduced renal function
- B. Acute kidney injury
- C. Decreased cardiac output
- D. ) Alterations in ratio of body fluids to muscle mass
Correct answer: A
Rationale:
2. You are caring for a patient admitted with a diagnosis of acute kidney injury. When you review your patient's most recent laboratory reports, you note that the patient's magnesium levels are high. You should prioritize assessment for which of the following health problems?
- A. Diminished deep tendon reflexes
- B. Tachycardia
- C. Cool, clammy skin
- D. Acute flank pain
Correct answer: A
Rationale: Corrected Rationale: To assess a patient's magnesium status, the nurse should check deep tendon reflexes. Diminished deep tendon reflexes may indicate high serum magnesium levels, as hypermagnesemia can lead to neuromuscular effects. Tachycardia, cool clammy skin, and acute flank pain are not typically associated with high magnesium levels and are not priority assessments in this situation.
3. When preparing a site for the insertion of an IV catheter, how should excess hair at the site be treated?
- A. Leaving the hair intact
- B. Shaving the area
- C. Clipping the hair in the area
- D. Removing the hair with a depilatory
Correct answer: C
Rationale: The correct answer is to clip the hair in the area. Excess hair at the site of IV catheter insertion should be removed because it can be a potential source of infection. Clipping the hair is preferred over shaving because shaving can cause skin abrasions, increasing the risk of infection. Using depilatories is not recommended as they can irritate the skin, which is undesirable when preparing a clean site for an invasive procedure. Therefore, clipping the hair in the area is the most appropriate and safe method to prepare the site for IV catheter insertion.
4. A nurse is caring for a client who has the following laboratory results: potassium 3.4 mEq/L, magnesium 1.8 mEq/L, calcium 8.5 mEq/L, sodium 144 mEq/L. Which assessment should the nurse complete first?
- A. Assess the client's dietary intake of foods high in potassium.
- B. Assess the client's neuromuscular status.
- C. Assess the client's fluid intake and output.
- D. Read food labels to determine sodium content.
Correct answer: D
Rationale: The correct answer is to read food labels to determine sodium content. The client's sodium level is crucial to monitor as it is on the higher side (144 mEq/L), which can indicate hypernatremia. Excessive sodium intake can lead to fluid retention and other complications. Assessing dietary sodium intake can help the nurse and client make necessary adjustments to prevent further sodium imbalances. Choices A, B, and C are not the priority in this situation as the client's sodium level needs immediate attention to prevent potential complications.
5. A patient with a longstanding diagnosis of generalized anxiety disorder presents to the emergency room. The triage nurse notes upon assessment that the patient is hyperventilating. The triage nurse is aware that hyperventilation is the most common cause
- A. Respiratory acidosis
- B. Respiratory alkalosis
- C. Increased PaCO2
- D. CNS disturbances
Correct answer: B
Rationale:
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