Which action is most appropriate when AKI is suspected due to decreased urine output?

• A. Administer a diuretic immediately
• B. Order an ultrasound only
• C. Increase fluid intake without assessment
• D. Assess hemodynamics and notify provider

Answer: (D)

Assessing perfusion and stability is vital when AKI is suspected due to decreased urine output. This situation often reflects impaired kidney blood flow (prerenal AKI) or evolving kidney injury, so the first step is to evaluate the patient’s hemodynamic status—vital signs, blood pressure, heart rate, mental status, signs of dehydration or shock—and measure ongoing urine output. This information helps determine whether the kidneys are not receiving enough blood flow and guides immediate actions. Notifying the provider ensures timely orders for further assessment, such as labs (creatinine, BUN, electrolytes), imaging if needed, or therapeutic interventions (fluids, vasoactive support, or nephrology input) based on the patient’s status.

Starting a diuretic right away can worsen volume depletion if perfusion is reduced, and increasing fluids without assessment can lead to fluid overload if the kidneys can’t handle the extra volume. An ultrasound alone may reveal obstruction but doesn’t address the hemodynamic status or provide direction for urgent management. The best immediate approach is to assess hemodynamics and involve the provider to guide appropriate treatment.