ATI RN
Chapter 14 Nutrition and Fluid Balance Questions
Question 1 of 5
Which is the most appropriate replacement fluid for a patient with significant nasogastric (NG) fluid drainage?
Correct Answer: A
Rationale: NG drainage typically results in loss of sodium, chloride, and potassium. 0.9% sodium chloride with added potassium chloride (20 mEq/L) closely matches these losses, making it the most appropriate replacement fluid.
Question 2 of 5
The two organ systems that work together to regulate most aspects of the body's water balance are
Correct Answer: D
Rationale: The urinary system regulates water excretion, and the cardiovascular system maintains blood volume and pressure, together controlling water balance.
Question 3 of 5
When a body is dehydrated, water in the urinary bladder
Correct Answer: C
Rationale: Water in the bladder is urine already filtered and cannot be reabsorbed; it is expelled despite dehydration.
Question 4 of 5
The primary osmoreceptors are located in the
Correct Answer: D
Rationale: Osmoreceptors in the hypothalamus detect changes in plasma osmolarity and trigger responses like vasopressin release.
Question 5 of 5
Why is sodium actively reabsorbed in the nephron?
Correct Answer: C
Rationale: Active sodium reabsorption creates an osmotic gradient that drives passive water reabsorption.