RIFLE criteria for assessing AKI (Acute Kidney Injury)
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ClassSerum Creatinine/ GFRUrine Output
Risk­ in Serum Creatinine x 1.5 or
GFR ¯ >25%
 <0.5 ml/kg/hr – more than 6 hours
Injury­ in Serum Creatinine x 2 or
GFR ¯ >50%
 <0.5 ml/kg/hr – more than 12 hours
Failure­ in Serum Creatinine x 3 or
creatinine > 354mmol/l with an acute rise >44mmol/l
GFR ¯ >75%
 <0.3 ml/kg/hr – more than 24 hours or anuric for 12 hours
LossPersistent acute renal failure with loss of kidney function >4 weeks
End-stage kidney diseaseESRD > 3 months


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Dr Tom Leach

Dr Tom Leach MBChB DCH EMCert(ACEM) FRACGP currently works as a GP and an Emergency Department CMO in Australia. He is also a Clinical Associate Lecturer at the Australian National University, and is studying for a Masters of Sports Medicine at the University of Queensland. After graduating from his medical degree at the University of Manchester in 2011, Tom completed his Foundation Training at Bolton Royal Hospital, before moving to Australia in 2013. He started almostadoctor whilst a third year medical student in 2009. Read full bio

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