Evaluation of Volume Status in Peritoneal Dialysis Patients

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. Identifier: NCT00182338
Recruitment Status : Completed
First Posted : September 16, 2005
Last Update Posted : July 20, 2011
St. Joseph's Healthcare Hamilton
Information provided by:
McMaster University

Brief Summary:
Patients with kidney failure on dialysis have a much higher risk of developing cardiovascular disease as compared to the general population. Recently, two large studies have shown that increasing the amount of dialysis does not decrease cardiovascular disease. It is known that retaining too much fluid leads to high blood pressure and thickening of the heart wall. Peritoneal dialysis is a method of home dialysis which allows dialysis patients autonomy and independence. This study will measure blood levels of a protein called N-BNP and measure the extent of body fluid by a machine called a bioimpedance analyzer. This device administers an undetectible electric current which distributes throughout total body water. The relationship between these tests and the clinical presence of volume expansion will be assessed. In addition, the extent of total body fluid and it's impact on heart attacks, heart failure and stroke will be determined.

Condition or disease
Cardiovascular Diseases Inflammation Peritoneal Dialysis

Detailed Description:

Patients with end-stage renal disease (ESRD) have a higher risk than the general population of developing premature cardiovascular disease; the reasons for this are complex. Two recent randomized controlled trials in peritoneal dialysis patients have demonstrated that targeting patients to higher dialysis clearance values is not associated with a reduction in mortality. It is known that patients on peritoneal dialysis are more likely to be volume expanded, develop left ventricular hypertrophy, and have inadequate blood pressure relative to patients on hemodialysis. As a result there has been increased attention on the role of fluid management in reducing the risk of developing congestive heart failure and other adverse cardiovascular events in peritoneal dialysis patients.

Extracellular fluid volume and total body water can be accurately assessed with multi-frequency bioimpedance analysis (BIA). Estimation of volume expansion by measuring the natriuretic peptide N-BNP produced by cardiac tissue in response to ventricular wall stretch can also be used.

The purpose of this study is to determine whether volume status, as measured by BIA and N-BNP levels, correlates with clinical volume assessment, cardiovascular outcomes, peritoneal membrane transport properties and markers of inflammation such as serum albumin and C-reactive protein.

Study Type : Observational
Actual Enrollment : 22 participants
Observational Model: Cohort
Time Perspective: Prospective
Official Title: Evaluation of Volume Status in Peritoneal Dialysis Patients
Study Start Date : January 2005
Actual Primary Completion Date : January 2009
Actual Study Completion Date : January 2009

Peritoneal Dialysis Patients

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
Peritoneal dialysis clinic

Inclusion Criteria:

  • Adult patients,
  • 18 years of age or older,
  • with end stage renal disease on peritoneal dialysis for a minimum of 3 months

Exclusion Criteria:

  • Peritonitis in previous 3 months;
  • history of bilateral lower limb amputation;
  • inability to provide informed consent;
  • presence of a pacemaker or defibrillator;
  • anticipated death or transplant within 6 months of recruitment

Information from the National Library of Medicine

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 identifier (NCT number): NCT00182338

Canada, Ontario
St. Joseph's Healthcare
Hamilton, Ontario, Canada, L8N 4A6
Sponsors and Collaborators
McMaster University
St. Joseph's Healthcare Hamilton
Principal Investigator: Scott K Brimble, MD McMaster University
Study Director: Peter Margetts, MD, PhD McMaster University
Study Director: David N Churchill, MD, MSc McMaster University
Study Director: Azim S Gangji, MD McMaster University

Publications of Results:
Responsible Party: Scott Brimble, McMaster University Identifier: NCT00182338     History of Changes
Other Study ID Numbers: PD 04-2305
First Posted: September 16, 2005    Key Record Dates
Last Update Posted: July 20, 2011
Last Verified: July 2011

Keywords provided by McMaster University:
cardiovascular outcomes
congestive heart failure
Peritoneal Membrane transport properties
Arterial stiffening
Inflammatory markers

Additional relevant MeSH terms:
Cardiovascular Diseases
Pathologic Processes