- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT03993496
Intraoperative Assessment of Pulsatile Aneurysm Wall Motion During Endovascular Aneurysm Repair
Study Overview
Status
Intervention / Treatment
Detailed Description
Endovascular abdominal aortic aneurysm repair (EVAR) aims to reduce the risk of aneurysm (AAA) rupture by reducing the blood pressure transmitted to the wall of the aneurysm. Unfortunately, this procedure is not always successful, and patients need to return to the operating room for further procedures because the aneurysm wall remains pressurized and the aneurysm continues to grow. Currently, there is no standard non-invasive way of measuring aneurysm pressure. The purpose of this study is to infer the reduction of pressure transmitted to the aneurysm wall by using intraoperative ultrasound ('M-Mode') to assess the pulsatility of the aneurysm wall. The hypothesis is that intraoperative reduction in aneurysm wall pulsatility after EVAR will correlate with improved aneurysm sac size reduction. This is clinically relevant because physiologic intraoperative feedback of aneurysm pressure may potentially influence surgical decision making in the future, reducing unnecessary re-interventions. This will also improve our understanding of the intraoperative physiologic response to EVAR.
Our primary research question is in patients receiving elective endovascular repair of abdominal aortic aneurysms (EVAR), does the change in intraoperative ultrasound estimated aneurysm wall pressure during EVAR correlate with aneurysm sac size reduction 1 year after surgery? Secondary objectives are to assess correlation between intraoperative ultrasound estimated aneurysm wall pressure and endovascular leaks and aneurysm-related re-interventions.
A prospective, observational, assessor-blinded and surgeon-blinded study will be conducted at the TOH Civic Campus in Ottawa, ON in order to satisfy the objectives of the study.
Study Type
Enrollment (Anticipated)
Contacts and Locations
Study Contact
- Name: Mark Rockley, MD
- Phone Number: 1-613-798-5555
- Email: mrockley@toh.ca
Study Locations
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Ontario
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Ottawa, Ontario, Canada, K1Y 4E9
- Recruiting
- The Ottawa Hospital - Civic Campus
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Contact:
- Mark Rockley, MD
- Phone Number: 1-613-798-5555
- Email: mrockley@toh.ca
-
Sub-Investigator:
- Mark C Rockley, MD
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Sub-Investigator:
- Emily T Nham, BSc
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
- Elective endovascular aneurysm repair (EVAR) surgery
- Infrarenal abdominal aortic aneurysm
- Age greater than 18 years old
Exclusion Criteria:
- Prior abdominal aortic aneurysm procedures
- Inability to visualize aneurysm on ultrasound
- Inability to provide consent
- Irregular arrhythmias
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
EVAR Patients
Patients with infrarenal abdominal aortic aneurysm scheduled for elective endovascular aneurysm repair (EVAR) surgery will undergo intraoperative assessments of aneurysm wall pulsatility using ultrasound M-Mode.
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Measurements of aortic wall pulsatility will be performed using trans-abdominal ultrasound through the non-sterile field of the upper abdomen, while the surgeons operate through the groins. The pulsatilty of the aneurysm will then be measured using transverse views in 'M-Mode' of the ultrasound, and measures the aneurysm wall displacement during a cardiac cycle; the minimum diameter (diastole) and maximum diameter (systole) will be measured. These measurements will occur during surgery:
Other Names:
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Fractional aneurysm sac size reduction 1 year after surgery
Time Frame: 1 year
|
Aneurysm sac size reduction will be measured using surveillance ultrasound 1 year after surgery.
Post-operative imaging reports will be accessed through the hospital electronic health records system (EPIC).
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1 year
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Fractional aneurysm sac size reduction 30 days after surgery
Time Frame: 30 days
|
Aneurysm sac size reduction will be measured using CTA 30 days after surgery.
Post-operative imaging reports will be accessed through the hospital electronic health records system (EPIC).
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30 days
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Endovascular leaks (Type 1, 2, 3, 4)
Time Frame: 30 days
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The presence of endovascular leaks (type 1, 2, 3, 4) will be assessed intraoperatively with a completion angiogram and CTA at 30 days postoperative.
Postoperative imaging reports will be accessed through the hospital electronic heath records system (EPIC).
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30 days
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Aneurysm-related re-interventions
Time Frame: 1 year
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Any aneurysm-related complications requiring re-interventions will be noted.
If an additional intervention is performed in the same operation, additional measurements of aortic wall pulsatility following intervention will be included.
Other post-operative re-interventions will be reviewed through EPIC.
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1 year
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Collaborators and Investigators
Sponsor
Study record dates
Study Major Dates
Study Start (ACTUAL)
Primary Completion (ANTICIPATED)
Study Completion (ANTICIPATED)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ACTUAL)
Study Record Updates
Last Update Posted (ACTUAL)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Keywords
Additional Relevant MeSH Terms
Other Study ID Numbers
- 20190366-01H
Plan for Individual participant data (IPD)
Plan to Share Individual Participant Data (IPD)?
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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