Monitoring intake and output helps assess which aspects of patient status?

• A. Visual acuity
• B. Nutrient absorption
• C. Hydration status and fluid balance
• D. Respiratory rate

Answer: (C)

Monitoring intake and output gauges hydration status and fluid balance. By tracking what a patient takes in and what leaves the body, you can tell if they are adequately hydrated, dehydrated, or experiencing fluid overload, which directly affects blood volume, blood pressure, edema, and electrolyte balance. This information helps guide decisions about IV fluids, diuretics, and adjustments to nutrition to maintain balance and organ perfusion. Visual acuity is about vision and isn’t determined by intake or output. Nutrient absorption refers to how well the gut takes up nutrients, which isn’t directly measured by simple intake/output. Respiratory rate is a lung-related vital sign and isn’t a direct measure of hydration, even though severe dehydration can influence overall physiology.