ATI RN
ATI Fluid and Electrolytes
1. Which hormone reduces the amount of water in the body?
- A. ADH
- B. aldosterone
- C. ANH
- D. ADH and aldosterone
Correct answer: B
Rationale: The correct answer is 'aldosterone.' Aldosterone is the hormone that reduces the amount of water in the body by increasing the reabsorption of sodium and water from the kidney tubules. ANH (atrial natriuretic hormone) actually works to increase the excretion of sodium and water by the kidneys, leading to a reduction in blood volume and pressure. ADH (antidiuretic hormone) works to increase water reabsorption by the kidneys, thereby increasing blood volume. Therefore, choices A (ADH) and D (ADH and aldosterone) are incorrect in the context of reducing the amount of water in the body.
2. A client who is at 10 weeks of gestation is being taught about nutrition during pregnancy. Which statement by the client indicates an understanding of the teaching?
- A. I should consume 1,200 calories per day.
- B. I should increase my daily intake of folic acid.
- C. I should drink 2 liters of water each day.
- D. I should limit my intake of iron-rich foods.
Correct answer: B
Rationale: The correct answer is B. Increasing folic acid intake is crucial during pregnancy to prevent neural tube defects. Option A is incorrect because calorie requirements during pregnancy vary and are generally higher than 1,200 calories per day. Option C is not specific to pregnancy nutrition teaching, although hydration is important. Option D is incorrect as iron-rich foods are typically recommended during pregnancy to prevent anemia.
3. A patient with acute lymphocytic leukemia (ALL) is undergoing chemotherapy and develops neutropenia. What is the most important nursing intervention for this patient?
- A. Administering antipyretics
- B. Restricting visitors
- C. Maintaining a sterile environment
- D. Administering prophylactic antibiotics
Correct answer: C
Rationale: Maintaining a sterile environment is crucial to prevent infection in neutropenic patients.
4. A patient taking hormonal contraceptives will soon turn 35 years of age. She is moderately obese and has smoked for 15 years. Which of the following is most important?
- A. Begin an exercise regimen.
- B. Begin smoking cessation.
- C. Begin daily aspirin therapy.
- D. Begin taking a loop diuretic to aid weight loss.
Correct answer: B
Rationale: The most important action for a patient taking hormonal contraceptives, who is nearing 35 years of age, moderately obese, and has a history of smoking for 15 years, is to begin smoking cessation. Women over 35, especially smokers, are at an increased risk of blood clots and cardiovascular issues when using hormonal contraceptives. Smoking cessation is crucial to reduce this risk. Beginning an exercise regimen may be beneficial for overall health but is not as critical as stopping smoking in this scenario. Daily aspirin therapy or taking a loop diuretic are not indicated in this situation and may not address the primary risk associated with hormonal contraceptives and smoking.
5. Which lab value is critical for monitoring warfarin therapy?
- A. Monitor INR
- B. Monitor platelet count
- C. Monitor sodium levels
- D. Monitor calcium levels
Correct answer: A
Rationale: The correct answer is A: Monitor INR. INR (International Normalized Ratio) is crucial for monitoring warfarin therapy as it helps assess the therapeutic effectiveness and bleeding risks associated with the medication. INR measures the clotting tendency of blood, which is essential in determining the appropriate dosage of warfarin. Monitoring platelet count (B), sodium levels (C), or calcium levels (D) is not primarily used for assessing warfarin therapy. Platelet count is more relevant in assessing bleeding disorders, while sodium and calcium levels are typically monitored for different medical conditions unrelated to warfarin therapy.
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