ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. . A 73-year-old man comes into the emergency department (ED) by ambulance after slipping on a small carpet in his home. The patient fell on his hip with a resultant fracture. He is alert and oriented; his pupils are equal and reactive to light and accommodation. His heart rate is elevated, he is anxious and thirsty, a Foley catheter is placed, and 40 mL of urine is present. What is the nurses most likely explanation for the low urine output?
- A. The man urinated prior to his arrival to the ED and will probably not need to have the Foley catheter kept in place.
- B. The man likely has a traumatic brain injury, lacks antidiuretic hormone (ADH), and needs vasopressin.
- C. The man is experiencing symptoms of heart failure and is releasing atrial natriuretic peptide that results in decreased urine output.
- D. The man is having a sympathetic reaction, which has stimulated the reninangiotensinaldosterone system that results in diminished urine output.
Correct answer: The man is having a sympathetic reaction, which has stimulated the reninangiotensinaldosterone system that results in diminished urine output.
Rationale:
2. A client is taking Epoetin Alfa for anemia. Which of the following laboratory tests should the nurse monitor to evaluate the effectiveness of the therapy?
- A. White blood cell count
- B. Platelet count
- C. Hematocrit
- D. Serum potassium level
Correct answer: C
Rationale: The nurse should monitor the hematocrit level to evaluate the effectiveness of Epoetin Alfa therapy since it stimulates red blood cell production. Hematocrit reflects the volume of red blood cells in the blood, providing a direct measure of the therapy's impact on increasing red blood cell mass and addressing anemia. Monitoring white blood cell count and platelet count is not directly related to assessing the effectiveness of Epoetin Alfa therapy for anemia. Serum potassium level monitoring may be necessary due to potential side effects of the medication, but it is not the primary indicator of therapy effectiveness in treating anemia.
3. A client has a history of excessive drinking, which has led to multiple arrests for driving under the influence (DUI). The client states, 'I work hard to provide for my family. I don't see why I can't drink to relax.' The nurse recognizes the use of which defense mechanism?
- A. Projection
- B. Rationalization
- C. Regression
- D. Sublimation
Correct answer: B
Rationale: The nurse should recognize that the client is using rationalization, a common defense mechanism. Rationalization involves creating logical reasons to justify unacceptable feelings or behaviors. In this scenario, the client is justifying excessive drinking by linking it to hard work and the need for relaxation, masking the true underlying issue of alcohol abuse. Projection involves attributing one's thoughts or feelings to others, regression involves reverting to an earlier stage of development, and sublimation involves channeling unacceptable impulses into socially acceptable activities, none of which are demonstrated in the client's statement.
4. By providing measures to reduce skin breakdown, how does the nurse break the chain of infection?
- A. Sterilizing the area to reduce the reservoir risk
- B. Maintaining the integrity of a portal of entry
- C. Creating a reservoir to decrease the risk of infection
- D. Creating a susceptible host
Correct answer: Maintaining the integrity of a portal of entry
Rationale:
5. Which test measures how well the lungs work by assessing the amount of air the lungs can hold and how quickly air can be exhaled?
- A. Spirometry
- B. Pulse oximetry
- C. Arterial blood gas (ABG)
- D. Chest X-ray
Correct answer: A
Rationale: The correct answer is A, Spirometry. Spirometry is a pulmonary function test that evaluates lung function by measuring the amount of air a person can exhale and how quickly, assisting in the diagnosis of conditions such as asthma and COPD. Choices B, C, and D are incorrect because Pulse oximetry measures oxygen saturation in the blood, Arterial blood gas (ABG) evaluates blood pH, oxygen, and carbon dioxide levels, and a Chest X-ray provides an image of the lungs but does not measure lung function.
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