Maximal Bruce Protocol With the Use of Regadenoson For Myocardial Perfusion Stress Testing (Rega Stress)

This study has been completed.
Sponsor:
Collaborator:
Astellas Pharma US, Inc.
Information provided by (Responsible Party):
Scott Jerome, D.O., University of Maryland
ClinicalTrials.gov Identifier:
NCT01026012
First received: November 30, 2009
Last updated: June 14, 2012
Last verified: October 2010
  Purpose

It is been known for at least 20 years that the hemodynamic data, the amount of exercise performed as well as symptoms on the treadmill, has significant value to the perfusion stress testing. When a pharmacologic stress test is performed (and adenosine stress test over 4-6 minutes), this hemodynamic data is lost. Because of this loss of valuable data, it is felt that there is also a loss of significant prognostic data as well. With the advent and FDA release of Regadenoson in a rapid injection form (over 10 seconds), it is thought that the combination of both exercise stress testing and pharmacologic testing in subjects that do not achieve 85% in a maximal predicted heart rate may be a viable stress testing option.

The purpose of this study is to look at using the drug, regadenoson, with exercise stress testing; and the side effect symptoms that may be experienced by individual subjects using this combination.


Condition Intervention
Cardiac Function
Drug: Regadenoson

Study Type: Interventional
Study Design: Endpoint Classification: Safety/Efficacy Study
Intervention Model: Single Group Assignment
Masking: Open Label
Primary Purpose: Diagnostic
Official Title: Maximal Bruce Protocol With the Use of Regadenoson For Myocardial Perfusion Stress Testing

Resource links provided by NLM:


Further study details as provided by University of Maryland:

Primary Outcome Measures:
  • Safety profile of study drug during stress test [ Time Frame: During and 30 minutes after intervention ] [ Designated as safety issue: Yes ]

Secondary Outcome Measures:
  • Side effect profile of study drug [ Time Frame: During and 30 minutes after intervention ] [ Designated as safety issue: Yes ]

Enrollment: 40
Study Start Date: December 2009
Study Completion Date: September 2010
Primary Completion Date: September 2010 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: Stress rega
The stress rega arm is the group that is getting the combination of stress and regadenoson
Drug: Regadenoson
For patients who do not achieve 85% of maximum predicted heart rate during exercise stress, 400 mcg of regadenoson will be administered once while exercise is continued
Other Name: Lexiscan

Detailed Description:

A nuclear stress test has been recommended for a patient by their doctor. This test helps to detect significant blockages in the artery to the heart. The test involves the patient walking on a treadmill until their heart rate reaches 85% of their age-determined maximal predicted heart rate. If the patient needs to stop walking for any reason (tiredness, chest pain, shortness of breath or dizziness) prior to reaching the 85% of their maximal heart rate, then the test becomes inaccurate and blockages can be missed. Nonetheless, the information that we gain from the patient walking remains valuable.

If the subject does not reach 85%, the usual procedure is to re-do the test where the subject would not walk on the treadmill, but would be injected with a pharmacologic agent (drug) which dilates their blood vessels. This would allow us to obtain an accurate picture about any blockages in the blood vessels. By doing the "drug" test alone, we lose the important information gained by the treadmill test.

In the present study the subject will be asked to walk on the treadmill and near the end of the walk, if they do not reach 85%, then the "drug" will be given to the patient. Regadenoson is FDA approved for drug stress testing. Regadenoson (versus one of the other pharmacological agents) will be given at a dose of 400 mcg, will be infused over 10 - 20 seconds followed by standard flushing solution, and then the infusion of a radiotracer (the FDA approved method of administration) will be given for nuclear imaging. The entire intravenous procedure takes 30 seconds. The subject will then undergo 5 minutes of standard observation/monitoring post infusion administration. Standard nuclear stress imaging will then follow. By doing this, we will obtain all the important information from the exercise portion of this test and maintain the accuracy to detect blockages. By doing the study in this manner, we will be able to save the subject time and obtain more information about the heart than either test individually.

  Eligibility

Ages Eligible for Study:   18 Years to 90 Years
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   No
Criteria

Inclusion Criteria:

  1. Referred for clinically indicated exercise stress SPEC Myocardial Perfusion Imaging (MPI) study, Provide written informed consent
  2. Provide written informed consent

Exclusion Criteria:

  1. Acute myocardial infarction or unstable angina within three months
  2. Any condition judged by the investigator likely to pose a safety risk to the patient
  3. Participation in another investigational drug study within one month, Or participation in any previous rate adenosine trial
  4. Females who are breast-feeding or pregnant
  5. Dipyridamole use within 48 hours
  6. Consumption of methyl xanthine's, coffee theophylline, caffeinated soft drinks chocolate within 24 hours of the stress test
  7. Has received a heart transplant
  8. Has a recent history (less than 30 days) of uncontrolled ventricular arrythmia
  9. Active respiratory wheezing, angina, ventricular dysrhythmia, low blood pressure or EKG changes
  10. Patients that do not have a functioning artificial pacemaker and have either: 1) second or third degree AV block 2) sinus node dysfunction
  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: NCT01026012

Locations
United States, Maryland
University of MD Cardiology Physicians
Westminster, Maryland, United States, 21157
Sponsors and Collaborators
University of Maryland
Astellas Pharma US, Inc.
Investigators
Principal Investigator: Scott Jerome, D.O. University of Maryland
  More Information

No publications provided

Responsible Party: Scott Jerome, D.O., Assistant Professor of Medicine, Director of Ambulatory Outreach Cardiology, University of Maryland
ClinicalTrials.gov Identifier: NCT01026012     History of Changes
Other Study ID Numbers: HP-00040189
Study First Received: November 30, 2009
Last Updated: June 14, 2012
Health Authority: United States: Food and Drug Administration

Keywords provided by University of Maryland:
Regadenoson
85% predicted heart rate
Myocardial perfusion stress testing

Additional relevant MeSH terms:
Regadenoson
Adenosine A2 Receptor Antagonists
Purinergic P1 Receptor Antagonists
Purinergic Antagonists
Purinergic Agents
Neurotransmitter Agents
Molecular Mechanisms of Pharmacological Action
Pharmacologic Actions
Physiological Effects of Drugs

ClinicalTrials.gov processed this record on July 20, 2014