Urine Output Criteria
Serum creatinine increased × 1.5
GFR decreased by 25%
Urine output <0.5 mL/kg/hr for 6 hr
68-yr-old African American woman with type 2 diabetes, hypertension, CAD, and CKD.
Scheduled to undergo emergency coronary artery bypass graft.
Serum creatinine is 1.8 mg/dL (increased) and she weighs 60 kg.
Calculated GFR is 35 mL/min/1.73 m2.
She has Stage 3b CKD.
Serum creatinine increased × 2
GFR decreased by 50%
Urine output <0.5 mL/kg/hr for 12 hr
During surgery, she experiences hypotension for a sustained period.
Acute tubular necrosis is diagnosed.
After surgery: Serum creatinine is 3.6 mg/dL and urine output is reduced to 28 mL/hr
Serum creatinine increased × 3
GFR decreased by 75%
Serum creatinine >4 mg/dL with
acute rise ≥0.5 mg/dL
Urine output <0.3 mL/kg/hr for 24 hr (oliguria)
Anuria for 12 hr
72 hours after surgery and in ICU develops ventilator-associated pneumonia and sepsis.
Serum creatinine rises to 5.2 mg/dL and urine output drops to 10 mL/hr.
BP remains low despite dopamine therapy.
Persistent acute kidney failure.
Complete loss of kidney function >4 wk
Continuous venovenous hemodialysis is started.
After 3 wk of therapy she has a cardiopulmonary arrest and does not survive.
Complete loss of kidney function >3 mo