Catheterization Laboratory Study: Acute Responses in Diastolic Heart Failure

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: NCT00204945
Recruitment Status : Completed
First Posted : September 20, 2005
Last Update Posted : January 16, 2009
Scios, Inc.
Information provided by:
University of Wisconsin, Madison

Brief Summary:
  1. Research question: What is the response of the heart's pumping function to changes in heart chamber pressures?
  2. Experimental design: Patients undergoing routine cardiac catheterization will be studied. A thermodilution pulmonary artery catheter will be inserted through a venous sheath and threaded into the pulmonary artery. After several minutes of quiet rest, baseline hemodynamics will be obtained, including a determination of cardiac output using thermodilution techniques and 30 seconds of pressure recordings from the left ventricle and proximal aorta. In addition, a brief echocardiogram will be performed, to determine ejection fraction and indices of diastolic filling. Finally, arterial tonometry will be obtained in quick succession from the brachial, radial, femoral, and carotid arteries. Following the collection of baseline data, a bolus and infusion of nesiritide will be started. After 10 minutes of nesiritide infusion, with the drug still infusing, a full set of invasive hemodynamics will again be obtained, as well as brief echocardiographic and arterial tonometry examinations.

Condition or disease Intervention/treatment Phase
Heart Failure, Congestive Drug: nesiritide Not Applicable

Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 65 participants
Allocation: Non-Randomized
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Health Services Research
Official Title: Acute Responses in Diastolic Heart Failure
Study Start Date : February 2005
Actual Primary Completion Date : March 2008
Actual Study Completion Date : March 2008

Resource links provided by the National Library of Medicine

MedlinePlus related topics: Heart Failure
Drug Information available for: Nesiritide

Intervention Details:
  • Drug: nesiritide
    a bolus, then infusion of nesiritide for 10-15 minutes

Primary Outcome Measures :
  1. arterial tonometry [ Time Frame: following catheterization, then following 10 minutes of nesiritide infusion ]

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years to 90 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Cardiac catheterization

Exclusion Criteria:

  • Unstable coronary syndrome,
  • Critical coronary stenoses (>90%),
  • Severe peripheral vascular disease,
  • Symptomatic hypotension at completion of routine diagnostic cath,
  • Significant valvular disease, resting heart rate >120 beats/min,
  • Ejection fraction <45%,
  • Presence of contraindications to nesiritide administration,
  • Any evidence of clinical instability.

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): NCT00204945

United States, Wisconsin
University of Wisconsin Hospital and Clinics
Madison, Wisconsin, United States, 53792
Sponsors and Collaborators
University of Wisconsin, Madison
Scios, Inc.
Principal Investigator: Nancy K Sweitzer, MD PhD University of Wisconsin, Madison

Responsible Party: Nancy K. Sweitzer, MD, PhD, University of Wisconsin Identifier: NCT00204945     History of Changes
Other Study ID Numbers: 2001-496
K23 AGO01022
First Posted: September 20, 2005    Key Record Dates
Last Update Posted: January 16, 2009
Last Verified: January 2009

Keywords provided by University of Wisconsin, Madison:
arterial stiffness
high heart pressures
cardiac catheterization

Additional relevant MeSH terms:
Heart Failure
Heart Failure, Diastolic
Heart Diseases
Cardiovascular Diseases
Natriuretic Peptide, Brain
Natriuretic Agents
Physiological Effects of Drugs