PET/CT Imaging of Aneurysm Wall Inflammation

NCT00661518 | Unknown

• 1 other identifier: ASAP
• Study Type: observational
• Target: 35
• Locations: 1 country
• Sites: 1

Brief Summary

Rationale: Aneurysm development, progression and rupture are characterised by extensive inflammation, dominated by the infiltration of T-cells, B-cells and macrophages. Recent studies into the pathophysiology of aneurysm wall degradation suggest a close relation between increased mechanical stress and the local activation of infiltrated lymphocytes and macrophages. The non-invasive detection of aneurysm wall inflammation, using 18-fluorodeoxyglucose positron emission tomography (FDG-PET) might therefore provide valuable information on the extend of the disease and could clarify the role of mechanical stress on the propagation of aneurysm wall inflammation. Objective: Correlation of FDG uptake and in vitro aneurysm wall tensile strength. (primary objective). The effect of aneurysm sac depressurisation, after endovascular aneurysm repair, on aneurysm wall inflammation (secondary objective). Study design: Observational case series (pilot). Study population: Patients scheduled for conventional (open) and endovascular aneurysm repair. Main study parameters: Standard uptake value (SUV) measurements to asses FDG uptake in the aneurysm wall and in vitro aneurysm wall strength (N/mm). Nature and extent of the burden and risks associated with participation, benefit and group relatedness: Patients scheduled for conventional (open) or endovascular aneurysm repair are admitted to the hospital the day before surgery. At that point all patients will be evaluated using FDG-PET. Although intake of sugar-free liquids is permitted, glucose intake is restricted 6 hours prior to FDG-PET imaging. One hour after intravenous injection of 200-220 MBq FDG, whole body emission and transmission images will be acquired. To determine inflammation markers ( e.g. CRP), blood and urine samples will be collected prior to the operation and again 6 weeks after surgery. For in vitro aneurysm wall tensile strength testing wall specimens will be harvested during conventional aneurysm repair.

Conditions

Aortic Aneurysm

Study Arms (2)

1

Patients scheduled for conventional aneurysm repair

2

Patients scheduled for endovascular aneurysm repair

Eligibility Criteria

• Sex: all
• Healthy Volunteers: No
• Age Groups: Child (0-17), Adult (18-64), Older Adult (65+)
• Sampling Method: Non-Probability Sample

Study Population

Population: At the Radboud University Nijmegen Medical Centre, approximately 80 patients undergo prophylactic aneurysm repair each year. 10-15 patients are scheduled for conventional ('open') repair the remaining 65-70 patients undergo endovascular aneurysm. We therefore expect to finish including patients for both studies by the end of august 2008. The study population will be comprised both male (± 80%) and female patients with an abdominal aortic aneurysm. Inclusion criteria Exclusion criteria -Diabetes Mellitus type 1 en 2

You may qualify if:

• scheduled for conventional (10 patients) or endovascular (25 patients) aneurysm repair.
• Informed consent

You may not qualify if:

• Diabetes Mellitus type 1 en 2

Sponsors & Collaborators

• Radboud University Medical Center: lead

Study Sites (1)

Radboud University Nijmegen Medical Centre

Nijmegen, Gelderland, 6500HB, Netherlands

RECRUITING

MeSH Terms

Conditions

Aortic Aneurysm

Condition Hierarchy (Ancestors)

Aneurysm; Vascular Diseases; Cardiovascular Diseases; Aortic Diseases

Study Officials

• Maarten Truijers, MD

  Radboud University Medical Center

  PRINCIPAL INVESTIGATOR

Central Study Contacts

Maarten Truijers, MD

CONTACT

+31243613956; m.truijers@chir.umcn.nl

Study Design

• Study Type: observational
• Observational Model: CASE CONTROL
• Time Perspective: PROSPECTIVE
• Sponsor Type: OTHER

Study Record Dates

• First Submitted: April 14, 2008
• First Posted: April 18, 2008
• Study Start: October 1, 2007
• Primary Completion: October 1, 2008
• Study Completion: December 1, 2008
• Last Updated: April 18, 2008

Record last verified: 2008-04

Locations

NL (1)