ATI RN
ATI Fluid Electrolyte and Acid-Base Regulation
1. The nurse is providing care for a patient with chronic obstructive pulmonary disease. When describing the process of respiration the nurse explains how oxygen and carbon dioxide are exchanged between the pulmonary capillaries and the alveoli. The nurse is describing what process?
- A. Diffusion
- B. Osmosis
- C. Active transport
- D. Filtration
Correct answer: Diffusion
Rationale:
2. During the oliguric phase of acute kidney injury, what intervention should be included in the plan of care for a child?
- A. Administer a loop diuretic.
- B. Provide a low-sodium diet.
- C. Weigh the child weekly.
- D. Provide a high-protein diet.
Correct answer: A
Rationale: During the oliguric phase of acute kidney injury, the priority is managing fluid balance. Administering a loop diuretic is crucial to promote diuresis and reduce fluid retention, aiding in managing the condition effectively. Providing a low-sodium diet may be beneficial but is not the priority intervention during this phase. Weighing the child weekly is important for monitoring overall health but does not directly address the oliguric phase. Providing a high-protein diet is not typically recommended in acute kidney injury, especially during the oliguric phase, as it can put additional stress on the kidneys.
3. Medication for treating high blood cholesterol levels should not be used for most people unless:
- A. The patient has at least three major risk factors for coronary heart disease
- B. The patient has been experiencing symptoms of coronary heart disease for at least three months
- C. The patient's medical insurance covers prescription drugs
- D. Treatment with Therapeutic Lifestyle Changes (TLC) alone is unsuccessful after three months
Correct answer: D
Rationale: The correct answer is choice D because medication for high cholesterol is typically not considered unless Therapeutic Lifestyle Changes (TLC), which include diet and exercise, have not proven effective after a three-month period. This approach ensures that lifestyle modifications are given a fair chance to lower cholesterol levels before resorting to medication. Choice A is incorrect because the number of risk factors for coronary heart disease does not dictate when to begin medication; it is about the effectiveness of lifestyle changes. Choice B is incorrect as the duration of coronary heart disease symptoms does not determine when to start medication; the focus is on the response to TLC. Choice C is incorrect because the coverage of prescription drugs by the patient's insurance does not influence the medical decision to use medication for high cholesterol; it is based on medical necessity and effectiveness of prior interventions.
4. A client with heart failure is receiving instructions about laxative use. The client should be advised to avoid which of the following laxatives?
- A. Sodium phosphate
- B. Psyllium
- C. Bisacodyl
- D. Polyethylene glycol
Correct answer: A
Rationale: Clients with heart failure often have sodium restrictions. Sodium phosphate can lead to fluid retention due to sodium absorption, which is harmful for individuals with heart failure. Therefore, it should be avoided in this population to prevent exacerbating fluid overload. Psyllium, Bisacodyl, and Polyethylene glycol are safer options for individuals with heart failure as they do not pose the risk of exacerbating fluid overload through sodium retention.
5. A healthcare professional is preparing to collect a sample from a toddler for a sickle turbidity test. Which of the following actions should the healthcare professional plan to take?
- A. Obtain a sputum specimen
- B. Perform an Allen test
- C. Perform a finger stick
- D. Obtain a stool specimen
Correct answer: C
Rationale: The healthcare professional should perform a finger stick on a toddler as a component of the sickle turbidity test. If the test is positive, hemoglobin electrophoresis is required to distinguish between children who have the genetic trait and children who have the disease. Finger stick is a common method used to collect blood samples, especially in pediatric patients, for various tests.
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