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Sponsored by: |
University of California, San Francisco |
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Information provided by: | University of California, San Francisco |
ClinicalTrials.gov Identifier: | NCT00723281 |
The overall goal of this study is to determine if non-invasive imaging with state of the art CT coronary angiography can be used to screen for transplant coronary artery disease in the setting of heart transplant.
Our current protocol at UCSF for heart transplant patients involves screening with stress tests as well as coronary angiograms with intravascular ultrasound to assess the diameter of the lumen of the coronary arteries and to assess wall thickness.
Condition |
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Heart Transplantation Coronary Artery Disease |
Study Type: | Observational |
Study Design: | Case-Only, Prospective |
Official Title: | Comparison of CT Angiography With Conventional Angiography and Intravascular Ultrasound in Heart Transplant Patients |
Estimated Enrollment: | 18 |
Study Start Date: | January 2007 |
Estimated Primary Completion Date: | January 2009 (Final data collection date for primary outcome measure) |
Our hypothesis is that state of the art CT coronary angiography can be used to acquire data regarding the coronary arteries in the setting of heart transplant and be used to risk stratify patients with regards to the developments of transplant coronary artery disease.
Specific Aim 1- To test the hypothesis that coronary CTA can accurately measure cross-sectional vessel wall area using conventional coronary angiography with intra-vascular ultrasound as the standard of reference.
Specific Aim 2- To test the hypothesis that coronary CTA can accurately measure cross-sectional vessel wall thickness, vessel area and luminal area using conventional coronary angiography with intra-vascular ultrasound as the standard of reference.
Secondary Aim - To asses the correlation of cross-sectional vessel wall area, vessel wall thickness, vessel area, luminal area and vessel wall index with global and regional left ventricular function using coronary CTA.
Ages Eligible for Study: | 18 Years and older |
Genders Eligible for Study: | Both |
Accepts Healthy Volunteers: | No |
Sampling Method: | Non-Probability Sample |
All heart transplant patients at UCSF with known transplant coronary artery disease will be candidates for the study
Inclusion Criteria:
Exclusion Criteria:
Patients with heart rate higher than 65 bpm and contraindications for the use of beta-blockers, listed below:
Systolic blood pressure < 90mmHg Decompensated congestive heart failure; COPD or asthma in use of bronchodilator; Second or third degree heart block; Severe aortic stenosis, defined by a pressure gradient higher than 50 mmHg and/or the presence of symptoms.
Patients with contraindications for the use of nitroglycerin, listed below:
Severe anemia; Increased intracranial pressure; Known hypersensitivity; Use of Sildenafil Citrate (Viagra®)
United States, California | |
UCSF Medical Center | |
San Francisco, California, United States, 94143 |
Principal Investigator: | Charles B Higgins, MD | UCSF Department of Radiology |
Responsible Party: | Department of Radiology ( Charles B. Higgins, MD ) |
Study ID Numbers: | H627-29905 |
Study First Received: | July 24, 2008 |
Last Updated: | July 25, 2008 |
ClinicalTrials.gov Identifier: | NCT00723281 |
Health Authority: | United States: Institutional Review Board |
transplant coronary artery disease CT angiography conventional angiography intravascular ultrasound Heart transplant patients with known transplant coronary artery disease |
Arterial Occlusive Diseases Coronary Disease Heart Diseases Myocardial Ischemia |
Vascular Diseases Arteriosclerosis Ischemia Coronary Artery Disease |
Cardiovascular Diseases |