Try our beta test site
IMPORTANT: Listing of a study on this site does not reflect endorsement by the National Institutes of Health. Talk with a trusted healthcare professional before volunteering for a study. Read more...

Noninvasive Cardiac Output Measurements in Patients With Pulmonary Hypertension Undergoing Right Heart Catheterization With Acute Vasodilator Testing

This study has been withdrawn prior to enrollment.
(The PI closed this study and went to another institution.)
Sponsor:
Information provided by (Responsible Party):
University of Chicago
ClinicalTrials.gov Identifier:
NCT01275690
First received: January 10, 2011
Last updated: January 9, 2017
Last verified: January 2017
  Purpose

Subjects in this study have been diagnosed with pulmonary hypertension (PH) and their doctors have referred them for a right heart catheterization (RHC). Heart catheterization involves inserting an IV (a needle with a small tube) into a vein in the neck. A long, narrow tube, called a catheter, is guided through the IV into the blood vessel and guided to the heart (sometimes this procedure can be done through a vein in the groin instead). Once the catheter is in place, small instruments can be inserted into the catheter to measure the pressures in different areas of the heart. These measurements can help the doctor diagnose possible problems with the heart functioning.

The purpose of this study is to evaluate the measurements provided by a device, called Noninvasive Cardiac Output Monitoring (NICOM). The NICOM device is non-invasive which means the investigators do not have to go inside the body to obtain the heart pressure measurements. While the device has been approved for use in any patient, it remains possible that patients with PH will have differences in the way the device calculates measurements. In this study, the investigators will compare the in-the-body (right heart catheterization) measurements to the non-invasive, outside-body measurements provided by the NICOM device to evaluate any differences.

The NICOM device is approved by the US Food and Drug Administration (FDA) to measure heart pressures. This device is usually used when a patient can't undergo a right heart catheterization. In this study, the investigators are using the device to gather heart pressure measurements for research during the right heart catheterization procedure that is scheduled as part of the patients' normal, routine care. The research data is being used to devise better, less invasive ways to assess disease severity, track disease progression and evaluate response to therapy. The NICOM device is made by Cheetah Medical.


Condition
Pulmonary Hypertension

Study Type: Observational
Study Design: Observational Model: Case-Only
Time Perspective: Prospective
Official Title: Noninvasive Cardiac Output Measurements in Patients With Pulmonary Hypertension Undergoing Right Heart Catheterization With Acute Vasodilator Testing

Resource links provided by NLM:


Further study details as provided by University of Chicago:

Primary Outcome Measures:
  • To determine the accuracy of a noninvasive method of measuring cardiac output as compared to the standard invasive approach using thermodilution in patients with pulmonary hypertension [ Time Frame: 2 years ]

Enrollment: 0
Study Start Date: May 2010
Estimated Study Completion Date: May 2014
Estimated Primary Completion Date: May 2014 (Final data collection date for primary outcome measure)
Groups/Cohorts
subjects with PH undergoing right heart catheterization

  Eligibility

Ages Eligible for Study:   18 Years and older   (Adult, Senior)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No
Sampling Method:   Non-Probability Sample
Study Population
We will enroll 100 consecutive patients referred to the Pulmonary Hypertension Center and scheduled for cardiac catheterization with right heart catheterization and acute vasodilator testing as part of their evaluation of PH.
Criteria

Inclusion Criteria:

  • 18 years old and up
  • have Pulmonary Hypertension (PH)
  • Scheduled for cardiac catheterization with right heart catheterization and acute vasodilator testing as part of their evaluation of PH

Exclusion Criteria:

  • unable or unwilling to give informed consent
  Contacts and Locations
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, see Learn About Clinical Studies.

Please refer to this study by its ClinicalTrials.gov identifier: NCT01275690

Sponsors and Collaborators
University of Chicago
Investigators
Principal Investigator: Stephen Archer, MD University of Chicago
  More Information

Responsible Party: University of Chicago
ClinicalTrials.gov Identifier: NCT01275690     History of Changes
Other Study ID Numbers: 10-179-B
Study First Received: January 10, 2011
Last Updated: January 9, 2017

Keywords provided by University of Chicago:
cardiac
pulmonary hypertension
To determine the accuracy of a noninvasive method of measuring cardiac output as compared to the standard invasive approach in patients with PH

Additional relevant MeSH terms:
Hypertension
Hypertension, Pulmonary
Vascular Diseases
Cardiovascular Diseases
Lung Diseases
Respiratory Tract Diseases
Vasodilator Agents

ClinicalTrials.gov processed this record on May 22, 2017