Catheterization Laboratory Study: Acute Responses in Diastolic Heart Failure

Not Applicable

Completed

• Conditions: Heart Failure, Congestive

• Registration Number: NCT00204945
• Lead Sponsor: 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.

Detailed Description

Not available

Study Timeline

• Study Start: 2005-02
• Study First Submitted: 2005-09-13
• Study First Submitted QC: 2005-09-13
• Study First Posted: 2005-09-20
• Primary Completion: 2007-06-20
• Study Completion: 2007-06-20
• Status Verified: 2019-02
• Last Update Submitted: 2019-02-06
• Last Update Posted: 2019-02-08

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 15

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.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: SINGLE_GROUP

Primary Outcome Measures

Name	Time	Method
arterial tonometry	following catheterization, then following 10 minutes of nesiritide infusion

Trial Locations

Locations (1)

University of Wisconsin Hospital and Clinics; 🇺🇸 Madison, Wisconsin, United States