The purpose of this study is to examine the placement, timing, associated complications, efficacy of temporary and tunneled catheters for renal replacement therapy in patient with acute kidney injury.

The purpose of this study is to examine the placement, timing, associated complications, efficacy of temporary and tunneled catheters for renal replacement therapy in patient with acute kidney injury. In particular, we will be assessing renal replacement adequacy for patients on dialysis and continuous veno-venous hemofiltration by monitoring urea reduction ratios, venous and arterial pressures. We will also be monitoring infection rates. We will compare these outcomes in patients receiving tunneled catheters and patients receiving temporary catheters.

Inclusion Criteria:

• Patients admitted to the hospital with acute kidney injury requiring renal replacement therapy

Exclusion Criteria:

• End stage renal disease
• Chronic kidney disease 5 progression to end stage renal disease
• Outside hospital catheter placement

Patients admitted to the hospital with acute kidney injury requiring renal replacement therapy