What is the significance of monitoring urine output in suspected shock?

• A. To evaluate liver function
• B. To monitor thyroid function
• C. To assess neurological status
• D. To assess kidney function and fluid status

Answer: (D)

In shock, urine output serves as a real-time signal of how well the kidneys are being perfused and how the body's fluid status is being managed. When perfusion to the kidneys drops, the kidneys conserve blood flow and volume, leading to decreased urine production (oliguria). Conversely, improving perfusion with appropriate fluid resuscitation and hemodynamic support usually increases urine output, showing that fluid status and tissue perfusion are improving. Monitoring hourly urine output provides immediate feedback on the effectiveness of treatment and helps detect early kidney injury from ongoing poor perfusion.

This is why assessing kidney function and fluid status is the best fit. Urine output doesn’t directly measure liver function, thyroid function, or neurological status, which is why those options aren’t appropriate.