Acute Kidney Injury (AKI)

Mack Holmberg, MD


LEARNING OBJECTIVES
1. Develop a framework for differentiating the cause (pre/intra/post-renal) of acute kidney injury (AKI)


TEACHING INSTRUCTIONS


PRINTOUTS
1. Learner Handout


INTERACTIVE BOARDS

Use for Self-Directed Learning and Preparing to Present

Use For Presenting (Less Text and Fewer Pop-ups)


TAKE HOME POINTS
1. Pre-renal AKI is diagnosed by suggestive clinical history and physical and, if oliguric, a FeNa <1%.
2. Post-renal AKI is easily ruled in or out by evaluation for hydronephrosis with renal US.
3. Intra-renal is identified by ruling out pre and post renal causes along with identifying active urine sediment.


REFERENCES
Rangaswami J, Bhalla V, Blair JEA, et al. Cardiorenal Syndrome: Classification, Pathophysiology, Diagnosis, and Treatment Strategies: A Scientific Statement From the American Heart Association. Circulation. 2019;139(16):e840‐e878. doi:10.1161/CIR.0000000000000664