Effectiveness of Ultrafiltration in Treating People With Acute Decompensated Heart Failure and Cardiorenal Syndrome (The CARRESS Study) (CARRESS)
![]() |
The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. |
ClinicalTrials.gov Identifier: NCT00608491 |
Recruitment Status :
Completed
First Posted : February 6, 2008
Results First Posted : June 24, 2013
Last Update Posted : June 24, 2013
|
- Study Details
- Tabular View
- Study Results
- Disclaimer
- How to Read a Study Record
Condition or disease | Intervention/treatment | Phase |
---|---|---|
Heart Failure | Drug: Stepped pharmacologic care Device: Ultrafiltration | Phase 3 |
Heart failure is a common condition that affects approximately 5 million people in the United States, with 550,000 new cases diagnosed each year. Common symptoms of heart failure include swelling and fluid buildup in the legs, feet, and/or lungs; shortness of breath; coughing; elevated heart rate; change in appetite; and fatigue. If left untreated, the condition of the heart may deteriorate so far that the person undergoes ADHF. The number of hospitalizations attributed to ADHF has risen significantly, with many people readmitted soon after discharge because of recurring symptoms or further medical complications, such as cardiorenal syndrome. Current heart failure treatments focus on removing excess fluid buildup, often by increasing urination with diuretic medications or by draining directly from the veins. Direct drainage from the veins, also known as ultrafiltration, may be the more effective method for treating people with ADHF and cardiorenal syndrome. This study will compare the safety and effectiveness of ultrafiltration versus standard medical drug therapy in improving renal function and relieving fluid buildup in people hospitalized with ADHF and cardiorenal syndrome.
Participation in this study will last 60 days. All potential participants will undergo initial screening, which will include a medical history, physical exam, blood draws, measurements of fluid intake and urine output, and questionnaires. These same evaluations and procedures will be repeated at various points during the hospital stay. Eligible participants will be randomly assigned to receive standard medical drug therapy or fluid removal by ultrafiltration. Standard medical drug therapy will involve the intravenous delivery of diuretics and possibly other doctor-recommended medications. Ultrafiltration will involve intravenously removing blood, passing it through an ultrafiltration device, and then returning the blood to the participant. During ultrafiltration, participants will be treated with a blood thinner through the IV, as well.
Follow-up assessments will occur at Days 30 and 60 after treatment. Follow-up assessments will include measurements of fluid intake, urine output, and vital signs; blood draws; physical exams; and questions about medications and status of recovery.
Study Type : | Interventional (Clinical Trial) |
Actual Enrollment : | 188 participants |
Allocation: | Randomized |
Intervention Model: | Parallel Assignment |
Masking: | None (Open Label) |
Primary Purpose: | Treatment |
Official Title: | CARdiorenal REScue Study in Acute Decompensated Heart Failure: CARRESS |
Study Start Date : | March 2008 |
Actual Primary Completion Date : | March 2012 |
Actual Study Completion Date : | June 2012 |

Arm | Intervention/treatment |
---|---|
Active Comparator: Stepped pharmacologic care
Stepped care will provide treating physicians with guidelines for the intensification of diuretic therapy and the possible use of vasodilators and inotropes.
|
Drug: Stepped pharmacologic care
Stepped care will provide treating physicians with guidelines for the intensification of diuretic therapy and the possible use of vasodilators and inotropes. |
Experimental: Ultrafiltration
All loop diuretics will be discontinued. Treatment will involve slow continuous ultrafiltration until an optimal volume status has been achieved. Ultrafiltration therapy will be initiated after the placement of appropriate intravenous access and will continue until the participant's signs and symptoms of congestion have been optimized. Fluid status will be managed exclusively by ultrafiltration using the Aquadex system 100 (CHF Solutions, Inc.) according to the manufacturer's specifications. The use of vasodilators or inotropic agents will be prohibited unless deemed necessary for rescue therapy.
|
Device: Ultrafiltration
All loop diuretics will be discontinued. Treatment will involve slow continuous ultrafiltration until an optimal volume status has been achieved. Ultrafiltration therapy will be initiated after the placement of appropriate intravenous access and will continue until the participant's signs and symptoms of congestion have been optimized. Fluid status will be managed exclusively by ultrafiltration using the Aquadex system 100 (CHF Solutions, Inc.) according to the manufacturer's specifications. The use of vasodilators or inotropic agents will be prohibited unless deemed necessary for rescue therapy. |
- Change in Serum Creatinine [ Time Frame: Change from Baseline to Day 4 ]
- Change in Weight [ Time Frame: Change from Baseline to Day 4 ]
- Change in Glomerular Filtration Rate [ Time Frame: Change from Baseline to Day 4 ]
- Change in Serum Creatinine [ Time Frame: Change from Baseline to Day 7 ]
- Change in Glomerular Filtration Rate [ Time Frame: Change from Baseline to Day 7 ]
- Changes in Weight [ Time Frame: Change from Baseline to Day 1 ]
- Changes in Weight [ Time Frame: Change from Baseline to Day 2 ]
- Change in Weight [ Time Frame: Change from Baseline to Day 3 ]
- Changes in Weight [ Time Frame: Change from Baseline to Day 5 ]
- Change in Weight [ Time Frame: Change from Baseline to Day 6 ]
- Cumulative Net Fluid Loss [ Time Frame: Randomization through Day 1 ]
- Cumulative Net Fluid Loss [ Time Frame: Randomization through Day 2 ]
- Cumulative Net Fluid Loss [ Time Frame: Randomization through Day 3 ]
- Cumulative Net Fluid Loss [ Time Frame: Randomization through Day 4 ]
- Cumulative Net Fluid Loss [ Time Frame: Randomization through Day 5 ]
- Cumulative Net Fluid Loss [ Time Frame: Randomization through Day 6 ]
- Cumulative Net Fluid Loss [ Time Frame: Randomization through Day 7 ]
- Dyspnea Visual Analog Scale [ Time Frame: Change from Baseline to Day 4 ]
Scale range: -100 , +100
-100=worse, +100=better
- Change in Global Visual Analog Scale [ Time Frame: Change from Baseline to Day 4 ]
Scale range: -100 , +100
-100=worse, +100=better Participants asked to mark their global well being on a 10 cm vertical line, with the top labeled "best you have ever felt" and the bottom labeled "worst you have ever felt".
- Change in Dyspnea Visual Analog Scale [ Time Frame: Baseline to Day 7/Discharge ]
Scale range: -100 , +100
-100=worse, +100=better
- Change in Global Visual Analog Scale [ Time Frame: Baseline to Day 7/Discharge ]
Scale range: -100 , +100
-100=worse, +100=better Participants asked to mark their global well being on a 10 cm vertical line, with the top labeled "best you have ever felt" and the bottom labeled "worst you have ever felt".
- Change in Furosemide-Equivalent Dose [ Time Frame: Baseline to Day 7/Discharge ]Furosemide-Equivalent Dose is the dose bumetanide or torsemide converted to furosemide equivalent (Torsemide dose x 2,Bumetanide dose x 40)
- Change in Blood Sodium Level [ Time Frame: Baseline to Day 4 ]
- Change in Blood Potassium Level [ Time Frame: Baseline to Day 4 ]
- Change in Blood Urea Nitrogen/Urea [ Time Frame: Baseline to Day 4 ]
- Change in Blood Bicarbonate Level [ Time Frame: Baseline to Day 4 ]
- Change in Blood Hemoglobin Level [ Time Frame: Baseline to Day 4 ]
- Change in Blood Sodium Level [ Time Frame: Baseline to Day 7/Discharge ]
- Change in Blood Potassium Level [ Time Frame: Baseline to Day 7/Discharge ]
- Change in Blood Urea Nitrogen/Urea [ Time Frame: Baseline to Day 7/Discharge ]
- Change in Blood Bicarbonate Level [ Time Frame: Baseline to Day 7/Discharge ]
- Change in Blood Hemoglobin Level [ Time Frame: Baseline to Day 7/Discharge ]
- Change in Blood Cystatin C [ Time Frame: Baseline to Day 4 ]
- Change in Uric Acid [ Time Frame: Baseline to Day 4 ]
- Change in Blood N- Terminal Pro- BNP [ Time Frame: Baseline to Day 4 ]
- Change in Plasma Renin Activity [ Time Frame: Baseline to Day 4 ]
- Change in Blood High Sensitivity Troponin I [ Time Frame: Baseline to Day 4 ]
- Change in Blood Aldosterone [ Time Frame: Baseline to Day 4 ]
- Change in Blood Procollagen III N-terminal Propepide [ Time Frame: Baseline to Day 4 ]
- Change in Blood Endothelin-1 [ Time Frame: Baseline to Day 4 ]
- Change in Blood High Sensitivity C-Reactive Protein [ Time Frame: Baseline to Day 4 ]
- Change in Blood Carboxy-terminal Telopeptide of Collagen Type I [ Time Frame: Baseline to Day 4 ]
- Change in Blood Cystatin C [ Time Frame: Baseline to Day 7/Discharge ]
- Change in Blood Uric Acid [ Time Frame: Baseline to Day 7/Discharge ]
- Change in Blood N Terminal Pro-Natriuretic Peptide [ Time Frame: Baseline to Day 7/Discharge ]
- Change in Plasma Renin Activity [ Time Frame: Baseline to Day 7/Discharge ]
- Change in Blood High Sensitivity Troponin I [ Time Frame: Baseline to Day 7/Discharge ]
- Change in Blood Aldosterone [ Time Frame: Baseline to Day 7/Discharge ]
- Change in Blood Procollagen III N-terminal Propepide [ Time Frame: Baseline to Day 7/Discharge ]
- Change in Blood Endothelin-1 [ Time Frame: Baseline to Day 7/Discharge ]
- Change in Blood Carboxy-terminal Telopeptide of Collagen Type I [ Time Frame: Baseline to Day 7/Discharge ]
- Change in Blood High Sensitivity C-Reactive Protein [ Time Frame: Baseline to Day 7/Discharge ]
- Weight Change [ Time Frame: Baseline to Day 30 ]
- Change in Furosemide-Equivalent Dose [ Time Frame: Baseline to Day 30 ]Furosemide-Equivalent Dose is the dose bumetanide or torsemide converted to furosemide equivalent (Torsemide dose x 2,Bumetanide dose x 40)
- Creatinine Change [ Time Frame: Baseline to Day 30 ]
- Glomerular Filtration Rate Change [ Time Frame: Baseline to Day 30 ]
- Weight Change [ Time Frame: Baseline to Day 60 ]
- Change in Furosemide-Equivalent Dose [ Time Frame: Baseline to Day 60 ]Furosemide-Equivalent Dose is the dose bumetanide or torsemide converted to furosemide equivalent (Torsemide dose x 2,Bumetanide dose x 40)
- Best Available Serum Creatinine Change [ Time Frame: Baseline to Day 60 ]Core laboratory when available. If not available, local laboratory results were used.
- Best Available Glomerular Filtration Rate Change [ Time Frame: Baseline to Day 60 ]Core laboratory when available. If not available, local laboratory results were used.
- Change in Blood Uric Acid [ Time Frame: Baseline to Day 60 ]
- Change in Blood Cystatin C [ Time Frame: Baseline to Day 60 ]
- Change in Blood N Terminal Pro - B Natriuretic Peptides [ Time Frame: Baseline to Day 60 ]
- Change in Plasma Renin Activity [ Time Frame: Baseline to Day 60 ]
- Change in Blood High Sensitivity Troponin I [ Time Frame: Baseline to Day 60 ]
- Change in Blood Aldosterone [ Time Frame: Baseline to Day 60 ]
- Change in Blood Procollagen III N-terminal Propepide [ Time Frame: Baseline to Day 60 ]
- Change in Blood Endothelin-1 [ Time Frame: Baseline to Day 60 ]
- Change in Blood High Sensitivity C-Reactive Protein [ Time Frame: Baseline to Day 60 ]
- Change in Blood Carboxy-terminal Telopeptide of Collagen Type I [ Time Frame: Baseline to Day 60 ]

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.
Ages Eligible for Study: | 18 Years and older (Adult, Older Adult) |
Sexes Eligible for Study: | All |
Accepts Healthy Volunteers: | No |
Inclusion criteria:
- age 18 or older
- admitted to the hospital with a primary diagnosis of decompensated heart failure
- onset of cardiorenal syndrome after hospitalization or pre-hospitalization
- after hospitalization - onset of cardiorenal syndrome after hospitalization must occur within 10 days from the time of admission after receiving IV diuretics
- pre-hospitalization - onset of cardiorenal syndrome pre-hospitalization must occur within 12 weeks of the index hospitalization in the setting of escalating doses of outpatient diuretics
- persistent volume overload
Exclusion criteria:
- intravascular volume depletion based on investigator"s clinical assessment
- acute coronary syndrome within 4 weeks
- indication for hemodialysis
- creatinine > 3.5 mg per deciliter at admission to the hospital
- systolic blood pressure < 90 mmHg at the time of enrollment
- alternative explanation for worsening renal function such as obstructive nephropathy,contrast induced nephropathy, acute tubular necrosis
- Hematocrit > 45%
- poor venous access
- clinical instability likely to require the addition of intravenous vasoactive drugs including vasodilators and/or inotropic agents
- allergy or contraindications to the use of heparin
- the use of iodinated radio contrast material in the last 72 hours or anticipated use of IV contrast during the current hospitalization
- known bilateral renal artery stenosis
- active myocarditis
- hypertrophic obstructive cardiomyopathy
- severe valvular stenosis
- complex congenital heart disease
- sepsis or ongoing systemic infection
- enrollment in another clinical trial involving medical or device based interventions

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.
Please refer to this study by its ClinicalTrials.gov identifier (NCT number): NCT00608491
United States, Arizona | |
Mayo Clinic Arizona | |
Phoenix, Arizona, United States, 85054 | |
United States, Georgia | |
Morehouse School of Medicine | |
Atlanta, Georgia, United States, 30310 | |
United States, Minnesota | |
Minnesota Heart Failure Network | |
Minneapolis, Minnesota, United States, 55415 | |
Mayo Clinic | |
Rochester, Minnesota, United States, 55905 | |
United States, North Carolina | |
Duke University Medical Center | |
Durham, North Carolina, United States, 27705 | |
United States, Texas | |
Baylor College of Medicine | |
Houston, Texas, United States, 77030 | |
United States, Utah | |
University of Utah Health Sciences Center | |
Murray, Utah, United States, 84107 | |
United States, Vermont | |
University of Vermont - Fletcher Allen Health Care | |
Burlington, Vermont, United States, 05401 | |
Canada, Quebec | |
Montreal Heart Institute | |
Montreal, Quebec, Canada, H1T - 1C8 |
Principal Investigator: | Kerry L. Lee, PhD | Duke Clinical Research Institute |
Publications automatically indexed to this study by ClinicalTrials.gov Identifier (NCT Number):
Responsible Party: | Duke University |
ClinicalTrials.gov Identifier: | NCT00608491 |
Other Study ID Numbers: |
Pro00018064 U01HL084904-04 ( U.S. NIH Grant/Contract ) U01HL084904 ( U.S. NIH Grant/Contract ) 522 |
First Posted: | February 6, 2008 Key Record Dates |
Results First Posted: | June 24, 2013 |
Last Update Posted: | June 24, 2013 |
Last Verified: | May 2013 |
Acute Decompensated Heart Failure Acute Decompensated Heart Failure With Cardiorenal Syndrome Cardiorenal Syndrome Persistent Congestion Ultra Filtration |
Cardio-Renal Syndrome Heart Failure Heart Diseases Cardiovascular Diseases |
Renal Insufficiency Kidney Diseases Urologic Diseases |