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Def. UO < 0.5 cc/kg/hr in adults; <1 cc/kg/hr in children.
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In real life, in a Pt with stable vital, we tolerate up to > 0.25ml/kg/hr!
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Indicates !AKI - Acute Kidney Injury
| Importance | Early sign of AKI; can lead to fluid overload, electrolyte imbalance, uremia, and respiratory distress if unrecognized. |
|---|---|
| Risk Factors | Patient factors: CKD, age, HF, HTN, PVD, diabetes, contrast exposure |
| Presentation | Depends on cause: low urine output, signs of volume overload (edema, SOB), electrolyte/acid-base imbalances, uremia (nausea, AMS, pericarditis) |
| Key Investigations | Electrolytes, BUN, creatinine; UA/urine electrolytes to determine prerenal vs. intrinsic |
Note: Always check Foley catheter for obstruction or improper placement using flushing and bladder scan.