Trial record 2 of 5 for:    Aneurysm | Open Studies | NIH, U.S. Fed

Evaluation of Predictors of Aortic Aneurysm Growth and Rupture

The recruitment status of this study is unknown because the information has not been verified recently.
Verified December 2013 by University of Pittsburgh.
Recruitment status was  Recruiting
National Institute on Aging (NIA)
Information provided by (Responsible Party):
Rabih A. Chaer, University of Pittsburgh Identifier:
First received: December 12, 2013
Last updated: December 20, 2013
Last verified: December 2013

The goal is to non-invasively study the metabolic processes within the aortic wall that are thought to explain progression to clinical manifestations of an aortic aneurysm.

Hypothesis is that the non-invasive imaging of Abdominal Aortic Aneurysm (AAA) with contrast ultrasound, coupled with serum biomarker measurements will allow the identification of the vulnerable aortic wall and patients who are at risk of AAA growth or rupture.

Condition Intervention
Abdominal Aortic Aneurysm
Procedure: contrast ultrasound

Study Type: Interventional
Study Design: Allocation: Non-Randomized
Intervention Model: Crossover Assignment
Masking: Open Label
Primary Purpose: Diagnostic
Official Title: Aortic Wall Behavior as a Predictor of Aortic Aneurysm Growth and Rupture

Resource links provided by NLM:

Further study details as provided by University of Pittsburgh:

Primary Outcome Measures:
  • Time to Growth and/or Rupture of abdominal aortic aneurysm. [ Time Frame: Up to 5 years or time of aneurysm repair surgery. ] [ Designated as safety issue: No ]
    Prospective contrast ultrasound will be performed at regular clinically indicated timepoints.

Secondary Outcome Measures:
  • Systemic serum biomarkers of AAA will be measured. These markers are circulating levels of Vascular Endothelial Growth Factor, C Reactive Protein, cytokines and osteoprotegerin. [ Time Frame: At the time of contrast ultrasound ] [ Designated as safety issue: No ]
    Serum markers will be drawn at each follow up visit until if/when AAA is repaired. They will also be measured 1 year after repair.

Estimated Enrollment: 145
Study Start Date: May 2012
Estimated Study Completion Date: July 2014
Estimated Primary Completion Date: July 2014 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Active Comparator: contrast ultrasound for patients with AAA
Contrast ultrasound
Procedure: contrast ultrasound
Active Comparator: contrast ultrasound for patients without arterial disease
contrast enhanced ultrasound
Procedure: contrast ultrasound

Detailed Description:

Aim#1: Prospective Contrast Ultrasound (CUS) imaging of patients with AAA to predict AAA growth and test gender differences in rate of growth and rupture.

Aim#2: Serum biomarker testing of patient with AAA. CUS findings will be correlated with serum biomarkers and AAA wall histology.

Prospective Contrast Ultrasound imaging of patients with AAA as part of a pilot feasibility study to predict AAA growth and test gender differences in rate of growth and rupture. CUS findings will be correlated with serum biomarkers and AAA wall histology. Potential significance: This study will evaluate the AAA wall and will be based on detecting areas of increased vasa vasorum density within the aneurysm wall and intraluminal thrombus, which indicate regional ischemia and inflammation of the aortic wall and propensity for weakening, enlargement or rupture. This novel evaluation of the aortic wall in patients with AAA will allow individualized treatment based on the biological potential for growth and rupture.


Ages Eligible for Study:   21 Years and older
Genders Eligible for Study:   Both
Accepts Healthy Volunteers:   Yes

Inclusion Criteria:

  • Diagnosis of AAA with confirmation of diagnosis of any size aneurysm with imaging.
  • 21 years of age or older
  • ability to give informed consent.

Exclusion Criteria:

  • Inability to provide an informed consent
  • Known allergy to Definity
  • Unstable cardiopulmonary conditions
  • pregnancy
  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 identifier: NCT02022436

United States, Pennsylvania
University of Pittsburgh Medical Center, Division of Vascular Surgery Recruiting
Pittsburgh, Pennsylvania, United States, 15232
Contact: Brimmeier, BSN    412-235-1304   
Principal Investigator: Rabih Chaer, MD         
Sub-Investigator: Michel Makaroun, MD         
Sub-Investigator: Geetha Jeyabalan, MD         
Sub-Investigator: Edith Tzeng, MD         
Sub-Investigator: Steven Leers, MD         
Sub-Investigator: Luke Marone, MD         
Sub-Investigator: Bryan Tillman, MD         
Sub-Investigator: Timothy Wu, MD         
Sub-Investigator: Ashraf Taha, MD         
Sponsors and Collaborators
University of Pittsburgh
National Institute on Aging (NIA)
  More Information

No publications provided

Responsible Party: Rabih A. Chaer, Associate Professor of Surgery, University of Pittsburgh Identifier: NCT02022436     History of Changes
Other Study ID Numbers: AG042352-01  1R03AG042352-01 
Study First Received: December 12, 2013
Last Updated: December 20, 2013
Health Authority: United States: Food and Drug Administration

Additional relevant MeSH terms:
Aortic Aneurysm
Aortic Aneurysm, Abdominal
Aortic Diseases
Cardiovascular Diseases
Vascular Diseases
Contrast Media
Diagnostic Uses of Chemicals
Pharmacologic Actions processed this record on February 11, 2016