Closed for Enrollment

• AKI Prevention and Early Intervention in Patients Undergoing VAD Placement Rochester, Minn.

  The investigators are doing this research to find out if more careful assessment and elimination of potential risk factors of acute kidney injury (AKI) during the subject's perioperative period will reduce their chance of kidney damage and kidney damage related problems.

• AKI Prevention and Early Intervention in VAD Patients Admitted for Acute Medical Events Rochester, Minn.

  The investigators are doing this research to investigate whether multifaceted preventive measures for newly hospitalized ventricular assist device (VAD) patients will reduce the Acute Kidney Injury (AKI) occurrence rate, progression and associated complications

• Observational Study to Assess the Extent and Severity of Intravascular Volume Overload Using Clinically Available Quantitative Blood Volume Analysis (BVA) in Relation to Right Heart Catheter Hemodynamic Parameters in Hospitalized Patients Undergoing Ultrafiltration/Hemodialysis - Preliminary Data Acquisition Rochester, Minn.

  The purpose of this study is to assess the extent and severity of plasma volume expansion and overload in patients requiring ultrafiltration/dialysis and determine the relationship of quantitated Blood Volume Analysis (BVA) to hemodynamic right heart measurements.

• Prevention and Early Detection and Intervention of Post-Coronary Artery Bypass Grafting Surgery (CABG) Acute Kidney Injury (AKI) Rochester, Minn.

  The purpose of this study is to see if Nephrology participation in the care of patients undergoing CABG (coronary artery bipass grafting) could reduce the incidence of acute kidney injury through correction of modifiable risk factors, early detection and interventions post-operatively.