Which signs suggest acute kidney injury in pregnancy?

Which signs suggest acute kidney injury in pregnancy?

• A. Oliguria and increased creatinine
• B. Polyuria and polydipsia
• C. Hypertension only
• D. Normal labs

Answer: (A)

In pregnancy, acute kidney injury is most clearly signaled by a sudden drop in urine output (oliguria) combined with a rise in serum creatinine. Oliguria shows the kidneys aren’t producing enough urine, reflecting reduced filtration or tubular injury, while an increasing creatinine level indicates the kidneys aren’t clearing waste products efficiently. Pregnancy changes normal kidney function: GFR rises and creatinine is typically lower, so even a small rise from baseline can be a meaningful clue that injury is occurring. Polyuria and polydipsia aren’t typical for AKI; they point more toward diabetes or certain endocrine issues. Hypertension can accompany AKI but isn’t specific to it and can occur for other obstetric conditions like preeclampsia. Normal labs clearly don’t indicate AKI.

In pregnancy, acute kidney injury is most clearly signaled by a sudden drop in urine output (oliguria) combined with a rise in serum creatinine. Oliguria shows the kidneys aren’t producing enough urine, reflecting reduced filtration or tubular injury, while an increasing creatinine level indicates the kidneys aren’t clearing waste products efficiently. Pregnancy changes normal kidney function: GFR rises and creatinine is typically lower, so even a small rise from baseline can be a meaningful clue that injury is occurring.

Polyuria and polydipsia aren’t typical for AKI; they point more toward diabetes or certain endocrine issues. Hypertension can accompany AKI but isn’t specific to it and can occur for other obstetric conditions like preeclampsia. Normal labs clearly don’t indicate AKI.