- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT00910221
Cardiopulmonary-bypass and Reno-protective Effect of Atorvastatin Trial (CREAT)
A Phase II Randomised, Double-blind, Placebo-controlled Study of the Effect of Atorvastatin on Postoperative Renal Function in Patients Undergoing Elective Cardiopulmonary Bypass.
Acute kidney dysfunction is common after cardiac surgery. While many patients suffer no long-term ill effects from post-operative kidney dysfunction, some require initiation of dialysis therapy that can contribute to long-term morbidity. Further, there is evidence to suggest that those patients requiring dialysis after cardiac surgery have a higher risk of death in hospital.
The exact reasons why some patients develop acute kidney dysfunction after cardiac surgery is not well understood. However, research evidence to date has suggested that the presence of co-morbid illnesses (i.e., diabetes mellitus) and exposure to cardiopulmonary bypass (heart-lung machine used during operation when heart is stopped). Cardiopulmonary bypass, in particular, has been shown to over-activate several aspect of the body's immune system. Such over-activity can induce oxidative stress and contribute to acute kidney dysfunction.
The investigators believe that the statin drug, atorvastatin, might reduce the oxidative stress that occurs during cardiopulmonary bypass, and thus, prevent or reduce the magnitude of acute kidney dysfunction in those patients at highest risk. The investigators hope to give atorvastatin (40 mg orally) to patients immediately prior to and for 3 days after cardiac surgery, and to compare the effects on kidney function with patients who have not had atorvastatin.
Atorvastatin is the most commonly prescribed medication in Australia and is used to reduce blood cholesterol levels and decrease the risk of heart attacks and stroke. Recently, however, it has been discovered that atorvastatin may be useful for prevention of inflammation and oxidative stress in other conditions, such as following cardiac surgery with cardiopulmonary bypass.
Thus, the investigators plan to examine whether atorvastatin can prevent acute kidney dysfunction. This trial as planned is a pilot study. If atorvastatin shows promising evidence of reduction in acute kidney dysfunction, further studies on a larger scale would be required to justify its general use.
The investigators plan to determine whether atorvastatin, a statin drug, possesses kidney protective effects in patients at risk for perioperative acute kidney dysfunction after cardiac surgery and exposure to cardiopulmonary bypass.
This is a pilot, randomized, blinded, placebo-controlled trial.
The investigators plan to administer atorvastatin (40 mg orally) or placebo to patients immediately prior to and for 3 days after cardiac surgery. The atorvastatin/placebo will be given orally either by orogastric tube after induction of anaesthesia or swallowed by the patients.
Whether a particular patient receives the atorvastatin or placebo will be decided at random, and neither the patient nor the investigators will be aware of the allocated treatment.
The investigators plan to measure kidney function before and after cardiac surgery using the standard blood tests. The investigators also plan to measure markers of inflammation and oxidative stress in the blood. This may give insight into the mechanisms whereby atorvastatin exerts its effects. The investigators will also take four 20 ml samples of blood, spaced before, and after the operation, from the arterial catheter routinely inserted in every patient undergoing cardiac surgery.
The investigators believe that there will be no significant additional risk to a patient who participates in the study, and no discomfort other than that normally associated with cardiac surgery. Informed consent will be obtained from the patient prior to the operation by one of the investigators or the ICU research nurse. The clinical care of a patient who does not consent for any reason will not be affected.
Study Overview
Status
Conditions
Intervention / Treatment
Study Type
Enrollment (Actual)
Phase
- Phase 2
- Phase 3
Contacts and Locations
Study Locations
-
-
Victoria
-
Melbourne, Victoria, Australia, 3084
- Austin Health
-
-
Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Description
Inclusion Criteria:
- Cardiac surgical patients in whom the use of cardiopulmonary bypass was planned
- Written informed consent of patient
- Age > 18 years
And having at least one ore more of the following risk factors for postoperative AKI:
- Age =/> 70 years
- Preoperative plasma creatinine >120 µmol/L, New York Heart Association class III/IV or LVEF <35%
- Insulin dependent diabetes mellitus
- Valve surgery (with or without coronary artery bypass graft)
- Redo cardiac surgery
Exclusion Criteria:
- An emergency operation is indicated (within 24 hours after hospital admission or on intra-aortic balloon pump)
- Pregnancy is confirmed or breastfeeding is present
- A renal allograft is present
- Preoperative acute renal failure within 6 weeks (acute rise in serum creatinine > 50% from baseline) is present
- Pre-operative end stage renal disease (serum creatinine > 300 µmol/L) is present
- Chronic moderate to high dose corticosteroid therapy (>10 mg/d prednisone or equivalent) is present
- Known Allergy to Atorvastatin
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: Randomized
- Interventional Model: Parallel Assignment
- Masking: Quadruple
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
---|---|
Placebo Comparator: 2
|
Placebo tablet
|
Active Comparator: 1
|
Atorvastatin tablet
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Change in serum creatinine from baseline to peak level
Time Frame: within first two-seven postoperative days
|
within first two-seven postoperative days
|
Secondary Outcome Measures
Outcome Measure |
Time Frame |
---|---|
Change in NGAL from baseline to peak
Time Frame: within first 24 postoperatively
|
within first 24 postoperatively
|
Length of stay in Intensive care
Time Frame: from admission to discharge from Intensive care
|
from admission to discharge from Intensive care
|
Hospital-Mortality
Time Frame: during hospital stay
|
during hospital stay
|
Proportion of patients developing an increase in serum creatinine > 25% or >44µmicromol/L from baseline to peak level
Time Frame: within first two-seven postoperative days
|
within first two-seven postoperative days
|
Proportion of patients developing any of the RIFLE criteria: R, I or F
Time Frame: within first seven postoperative days
|
within first seven postoperative days
|
Proportion of patients developing any of the AKI stages: 1, 2 or 3 (using network definition)
Time Frame: within first seven postoperative days
|
within first seven postoperative days
|
Requirement of renal replacement therapy
Time Frame: within hospital stay
|
within hospital stay
|
Length of stay in Hospital
Time Frame: from admission to discharge from hospital
|
from admission to discharge from hospital
|
Collaborators and Investigators
Sponsor
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Estimate)
Study Record Updates
Last Update Posted (Estimate)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- H2007/02810
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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