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Acute Kidney Injury — NCLEX Cheat Sheet

Sudden ↓GFR, often reversible
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👤 By the CinnaRN Clinical Content Team 🕐 Updated 2026-07-11 🏷️ Physiological Adaptation 🔖 Free to read, print, and share
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Use this quick-reference guide to spot, treat, and prevent Acute Kidney Injury on the NCLEX. Keep it handy during review and on exam day!

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Nursing actions

Quick Tip

AKI classically progresses through four phases (onset, oliguric, diuretic, recovery) in intrinsic AKI/ATN; note that not all AKI is oliguric (non-oliguric AKI is common). Oliguric phase: urine under 400 mL/day for 1-3 weeks; diuretic phase: large urine output with risk of dehydration and hypokalemia.

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