Acute Kidney Failure
Conditions
Brief summary
Use of BNP (nesiritide) vs placebo to help protect kidney function in patients undergoing heart bypass surgery.
Detailed description
This is a randomized, double-blind, placebo controlled study of low dose nesiritide to prevent renal insufficiency after cardiopulmonary bypass surgery. Patients included are those with greater than mild renal insufficiency preoperatively as defined by having a creatinine clearance of less than 50 mL/minute determined by the Cockroft-Gault formula. The infusion of nesiritide (BNP) 0.005 mcg/Kg/minute or placebo begins 1 hour before surgery and runs for 24 hours started after the induction of anesthesia prior to cardiopulmonary bypass.
Interventions
Dose of Nesiritide infusion will be 0.005 ug/Kg/min
Sponsors
Study design
Eligibility
Inclusion criteria
* Patients \> 18 years old, undergoing cardiac surgery requiring cardiopulmonary bypass with baseline creatinine clearance \< 50 ml/min and who are not dialysis dependent.
Exclusion criteria
* Cardiogenic shock or hypotension with systolic BP \< 90 mmHg. * Patients with acute or chronic aortic dissection. * Patients who are enrolled in other studies that have an effect the renal function.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Creatinine Clearance at 72 hours determined by the Cockroft-Gault formula | 72 hours post op |
Secondary
| Measure | Time frame |
|---|---|
| Number of patients requiring dialysis during the hospitalization | before hospital discharge |
| Plasma aldosterone levels at 12 hours and 24 hours | 12 hours and 24 hours postoperatively |
| Total time on ventilator, ICU length of stay, total length of stay in hospital | total length of hospital stay |
| pre and postoperative diuretic dose used | pre operative and postoperate |
| Need or absence of need for inotropic support in the 72 hour perioperative period | 72 hours perioperative |
Countries
United States