A Post-Market Clinical Performance and Safety Evaluation of GamCath HighFlow Dolphin Protect Catheter

Inclusion Criteria: * Patients ≥ 18 years of age at the time of catheter insertion. * Patients diagnosed with AKI, ARF, and/or CKD (including end-stage renal disease \[ESRD\]). * Patients who required vascular access to perform extracorporeal blood purification using GamCath HighFlow Dolphin Protect Catheter inserted by a physician in the subclavian, jugular, or femoral veins. Exclusion Criteria: * Patients who required the GamCath HighFlow Dolphin Protect Catheter for any indication other than extracorporeal blood purification. * Patients who had a local infection at the vascular access site prior to catheter insertion. * Patients who required surgical intervention (e.g., cutdown procedure) for GamCath HighFlow Dolphin Protect Catheter placement. * Patients who had a prior catheter in place at the same vascular access site (i.e., R/L jugular vein, R/L femoral vein, R/L subclavian vein) within the last 7 days. * Patients who do not have complete patient records to support the primary endpoint analyses.