ATI RN
Fluid and Electrolytes ATI
1. A patient is in the hospital with heart failure. The nurse notes during the evening assessment that the patient's neck veins are distended and the patient has dyspnea. What action should the nurse take?
- A. Place the patient in low Fowler's position and notify the physician.
- B. Increase the patient's IV fluid and auscultate the lungs.
- C. Place the patient in semi-Fowler's position and prepare to give the PRN diuretic as ordered.
- D. Discontinue the patient's IV.
Correct answer: C
Rationale: The symptoms of distended neck veins and dyspnea indicate fluid overload in a patient with heart failure. Placing the patient in semi-Fowler's position helps with respiratory effort and administering diuretics, as ordered, can assist in reducing fluid volume. Placing the patient in low Fowler's position (Choice A) may not be as effective in improving breathing. Increasing IV fluid (Choice B) is contraindicated in fluid overload conditions. Discontinuing the IV (Choice D) is not the immediate intervention needed to address the symptoms of fluid overload.
2. 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 of which acid-base imbalance?
- A. Respiratory acidosis
- B. Respiratory alkalosis
- C. Increased PaCO2
- D. CNS disturbances
Correct answer: B
Rationale: The correct answer is B: Respiratory alkalosis. Hyperventilation, which can be caused by extreme anxiety, is the most common cause of acute respiratory alkalosis. This leads to a decrease in PaCO2 levels. Respiratory acidosis, choice A, occurs in conditions like hypoventilation, leading to an increase in PaCO2 levels. Choice C, Increased PaCO2, is not the correct term for an acid-base imbalance related to hyperventilation. Choice D, CNS disturbances, is not directly related to the acid-base imbalance caused by hyperventilation.
3. What is the most important regulator of the amount of sodium in the body?
- A. Kidneys
- B. Small intestine
- C. Large intestine
- D. Skin
Correct answer: A
Rationale: The correct answer is A: Kidneys. The kidneys play a crucial role in regulating the amount of sodium in the body. They achieve this by filtering blood and controlling the excretion or reabsorption of sodium. The small intestine is primarily responsible for nutrient absorption, not sodium regulation. The large intestine is mainly involved in water absorption and waste elimination, not sodium balance. The skin helps regulate body temperature through sweating and does not directly regulate sodium levels.
4. Your patient has the following arterial blood gas results: pH 7.26, PaCO2 28, HCO3 11 mEq/L. How would the nurse interpret the 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: The given arterial blood gas results show a low pH, indicating acidosis, with normal pH range being 7.35 to 7.45. The low PaCO2 suggests alkalosis, while the low bicarb level indicates acidosis. In this scenario, the primary issue is the metabolic acidosis, as the pH bicarb relationship supports this. The compensatory response to metabolic acidosis is a decrease in PaCO2, leading to a respiratory alkalosis. Therefore, the correct interpretation is 'Metabolic acidosis with a compensatory respiratory alkalosis.' Choices A, B, and C are incorrect as they do not accurately reflect the relationship between the pH, PaCO2, and HCO3 levels in the arterial blood gas results provided.
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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