ATI RN
Nutrition and Fluid Balance Questions
Question 1 of 5
Other than the absorption/infusion rate, which best explains why enteral potassium administration is safer than parenteral potassium administration?
Correct Answer: B
Rationale: Enteral potassium administration allows the body to sense potassium levels in the gut and regulate excretion via the kidneys (feed-forward mechanism), reducing the risk of hyperkalemia compared to rapid parenteral administration.
Question 2 of 5
Most body water is located in
Correct Answer: C
Rationale: Approximately 60% of body water is intracellular, located within cells, making it the largest compartment.
Question 3 of 5
The hormone that regulates water reabsorption by the kidneys
Correct Answer: D
Rationale: Vasopressin increases water permeability specifically in the collecting ducts, not throughout all tubules.
Question 4 of 5
When venous return is increased, stretch receptors in the atria of the heart are activated. This results in
Correct Answer: B
Rationale: Increased venous return signals adequate volume, inhibiting vasopressin to reduce water retention.
Question 5 of 5
Stimuli for the activation of the RAS pathway include
Correct Answer: D
Rationale: RAS is activated by low blood pressure in nephron arterioles and reduced distal tubule flow, detected by the macula densa.