The Detection of Coronary Stenosis With Intravenous Mircrobubbles and Contrast Pulse Sequence Low Mechanical Index Imaging
Overview
- Phase
- Not Applicable
- Intervention
- Optison
- Conditions
- Coronary Stenosis
- Sponsor
- University of Nebraska
- Primary Endpoint
- Detection of coronary and carotid artery stenoses and perfusion defects during standard echocardiographic examination
- Status
- Withdrawn
- Last Updated
- 2 years ago
Overview
Brief Summary
To detect coronary artery disease by both coronary and carotid artery imaging and myocardial perfusion imaging using a new low mechanical index real time system.
Detailed Description
The objective of this clinical study will be to visualize both coronary and carotid arteries as well as detect myocardial perfusion following a routine intravenous injection of Definity (0.05-0.20 millimeters), Optison (0.1-0.4 millimeters) or PESDA (0.05-0.2 mL). Following these injections , we will attempt to Contrast Pulse Sequencing on the Siemens Acuson Sequoia system to image both the coronary and carotid arteries, as well as the Myocardial perfusion.
Investigators
Eligibility Criteria
Inclusion Criteria
- •subjects scheduled for routine echocardiogram to look for evidence of Coronary artery disease or a stress echocardiogram
- •women of child-bearing potential must be taking a medically approved form of birth control with a negative urine pregnancy test
- •be conscious and coherent, and be able to communicate effectively with study personnel
- •last eight patients will be diabetics who smoke
- •provide informed consent after receiving a verbal and written explanation of the purpose and nature of the study
Exclusion Criteria
- •severe valvular heart disease by Doppler Echocardiography
- •females of child-bearing potential who are not taking a medically approved method of birth control will be excluded. If the patient is pregnant she will be excluded.
- •patients who are allergic to blood or blood products will be excluded
- •have contraindication to Optison, Definity, or PESDA (pulmonary HTN, cardiac shunt)
- •non diabetics, non smokers
Arms & Interventions
1 Intravenous Optison Followed by Contrast Pulse Sequencing
Administration of Optison (0.1-0.4 mL) intravenously followed by Contrast Pulse Sequencing to image both the coronary and carotid arteries. Use will depend on availability of the contrast for the given study Optison will not be used on patients with blood allergies or Jehovah Witnesses
Intervention: Optison
2 Intravenous Definity followed by Contrast Pulse Sequencing
Intravenous injection of Definity (0.05-0.20 mL) followed by Contrast Pulse Sequencing to image both coronary and carotid arteries
Intervention: Definity
3 Intravenous PESDA followed by Contrast Pulse Sequencing
Intravenous injection of PESDA at a rate of 0.05-0.20 mL followed by Contrast Pulse Sequencing image of coronary and carotid arteries PESDA will be used exclusively in patients who are eligible for other IRB studies
Intervention: PESDA
Outcomes
Primary Outcomes
Detection of coronary and carotid artery stenoses and perfusion defects during standard echocardiographic examination
Time Frame: 2-4 months
To determine whether this imaging scheme can detect both coronary and carotid artery stenoses as well as perfusion defects during a standard echocardiographic examination
Secondary Outcomes
- Visual analysis of coronary and carotid arteries and perfusion defects during standard echocardiogram examination(immediate)