In preeclampsia with severe features, oliguria is defined as urine output less than how many milliliters in 24 hours?

In preeclampsia with severe features, oliguria is defined as urine output less than how many milliliters in 24 hours?

• A. 500 mL
• B. 1000 mL
• C. 1500 mL
• D. 2000 mL

Answer: (A)

In preeclampsia with severe features, watching kidney function is crucial because reduced renal perfusion signals worsening disease. Oliguria reflects significant kidney involvement and helps identify patients who are at higher risk for complications. Oliguria is defined as urine output less than about half a liter in 24 hours. This threshold matters because it indicates the kidneys aren’t filtering adequately, prompting closer monitoring and potential escalation of care, since persistent oliguria can indicate evolving acute kidney injury and increased maternal-fetal risk. Normal urine output is typically around 800–2000 mL per day, so dropping below roughly 0.5 L/day is a meaningful change. The other higher outputs describe non-oliguric status and do not meet this criterion. When oliguria is present, expect vigilant hourly urine monitoring, careful fluid balance assessment, and coordinated decisions about ongoing management and timing of delivery based on the overall clinical picture.

In preeclampsia with severe features, watching kidney function is crucial because reduced renal perfusion signals worsening disease. Oliguria reflects significant kidney involvement and helps identify patients who are at higher risk for complications. Oliguria is defined as urine output less than about half a liter in 24 hours. This threshold matters because it indicates the kidneys aren’t filtering adequately, prompting closer monitoring and potential escalation of care, since persistent oliguria can indicate evolving acute kidney injury and increased maternal-fetal risk. Normal urine output is typically around 800–2000 mL per day, so dropping below roughly 0.5 L/day is a meaningful change. The other higher outputs describe non-oliguric status and do not meet this criterion. When oliguria is present, expect vigilant hourly urine monitoring, careful fluid balance assessment, and coordinated decisions about ongoing management and timing of delivery based on the overall clinical picture.