Open Versus Endovascular Repair of Abdominal Aortic Aneurysms

August 22, 2019 updated by: Marina Felicidade Dias Neto, Hospital Sao Joao

Retrospective Cohort Study of Open Versus Endovascular Repair of Abdominal Aortic Aneurysms

This is an observational retrospective cohort study of all patients consecutively submitted to elective abdominal aortic aneurysm surgery repair at a tertiary referral centre between 2009 and 2015. Patients were excluded if they were non-elective cases or had complex aortic aneurysms (juxta-renal, thoraco-abdominal or thoracic). Differences between both groups of repair were assessed, as well as short- and long-term complications including medical complications, duration of hospital stay, major cardiovascular events, mortality and vascular reintervention.

Study Overview

Status

Status

Indicates the current recruitment status or the expanded access status.
Completed

Conditions

Conditions

The disease, disorder, syndrome, illness, or injury that is being studied. On ClinicalTrials.gov, conditions may also include other health-related issues, such as lifespan, quality of life, and health risks.

Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.

Study Type

Study Type

Describes the nature of a clinical study. Study types include interventional studies (also called clinical trials), observational studies (including patient registries), and expanded access.
Observational

Enrollment (Actual)

Enrollment

The number of participants in a clinical study. The "anticipated" enrollment is the target number of participants that the researchers need for the study.
125

Contacts and Locations

This section provides the contact details for those conducting the study, and information on where this study is being conducted.

Study Locations

  • Portugal
      • Porto, Portugal, 4200-061
        • Centro Hospitalar Universitario de Sao Joao

Participation Criteria

Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.

Eligibility Criteria

Eligibility Criteria

The key requirements that people who want to participate in a clinical study must meet or the characteristics they must have. Eligibility criteria consist of both inclusion criteria (which are required for a person to participate in the study) and exclusion criteria (which prevent a person from participating). Types of eligibility criteria include whether a study accepts healthy volunteers, has age or age group requirements, or is limited by sex.

Ages Eligible for Study

  • ADULT
  • OLDER_ADULT
  • CHILD

Accepts Healthy Volunteers

No

Genders Eligible for Study

All

Sampling Method

Non-Probability Sample

Study Population

This is an observational retrospective cohort study of all patients consecutively submitted to elective AAA surgery repair at a tertiary academic referral center from south Europe, between January 2009 and December 2015. The exclusion criteria were non-elective cases, aortic intervention due to diagnosis other than infrarenal AAA and complex aortic aneurysms such as juxta-renal, thoraco-abdominal or thoracic aneurysms.

Description

Inclusion Criteria:

  • This is an observational retrospective cohort study of all patients consecutively submitted to elective AAA surgery repair at a tertiary academic referral center from south Europe, between January 2009 and December 2015.

Exclusion Criteria:

  • The exclusion criteria were non-elective cases, aortic intervention due to diagnosis other than infrarenal AAA and complex aortic aneurysms such as juxta-renal, thoraco-abdominal or thoracic aneurysms.

Study Plan

This section provides details of the study plan, including how the study is designed and what the study is measuring.

How is the study designed?

Design Details

Cohorts and Interventions

Group / Cohort

Group / Cohort

A group or subgroup of participants in an observational study that is assessed for biomedical or health outcomes.
Intervention / Treatment

Intervention / Treatment

A process or action that is the focus of a clinical study. Interventions include drugs, medical devices, procedures, vaccines, and other products that are either investigational or already available. Interventions can also include noninvasive approaches, such as education or modifying diet and exercise.
Endovascular repair
Observational retrospective cohort of patients consecutively submitted to elective abdominal aortic aneurysm surgery repair at a tertiary academic referral center from south Europe, between January 2009 and December 2015 through endovascular repair. The exclusion criteria were non-elective cases, aortic intervention due to diagnosis other than infrarenal AAA and complex aortic aneurysms such as juxta-renal, thoraco-abdominal or thoracic aneurysms.
Procedure: Type of aneurysm repair
In open surgery repair group, aneurysm repair was performed by open surgery including aortobifemoral bypass, aorto-bi-iliac bypass and tubular aortic bypass. In endovascular repair (EVAR group), aneurysm correction was performed by percutaneous approach, femoral cutdowns and aorto-uni-iliac EVARs with femorofemoral bypass.
Open repair
Observational retrospective cohort of patients consecutively submitted to elective abdominal aortic aneurysm surgery repair at a tertiary academic referral center from south Europe, between January 2009 and December 2015 through open repair. The exclusion criteria were non-elective cases, aortic intervention due to diagnosis other than infrarenal AAA and complex aortic aneurysms such as juxta-renal, thoraco-abdominal or thoracic aneurysms.
Procedure: Type of aneurysm repair
In open surgery repair group, aneurysm repair was performed by open surgery including aortobifemoral bypass, aorto-bi-iliac bypass and tubular aortic bypass. In endovascular repair (EVAR group), aneurysm correction was performed by percutaneous approach, femoral cutdowns and aorto-uni-iliac EVARs with femorofemoral bypass.

What is the study measuring?

Primary Outcome Measures

Primary Outcome Measures

In a clinical study's protocol, the planned outcome measure that is the most important for evaluating the effect of an intervention/treatment. Most clinical studies have one primary outcome measure, but some have more than one.
Outcome Measure
Measure Description
Time Frame
Major adverse cardiovascular events (MACE)
Time Frame: 12 months
Acute myocardial infarction (with PCI, CABG or no intervention), decompensated heart failure, neurological deficit (including transient ischemic attack or stroke) or death
12 months

Secondary Outcome Measures

Secondary Outcome Measures

In a clinical study's protocol, a planned outcome measure that is not as important as the primary outcome measure for evaluating the effect of an intervention but is still of interest. Most clinical studies have more than one secondary outcome measure.
Outcome Measure
Measure Description
Time Frame
Death
Time Frame: 12 months
Death of any cause
12 months
Medical complications
Time Frame: 30 days
Including digestive complications such as intestinal obstruction or ischemia, acute myocardial infarction (with PCI, CABG or no intervention), decompensated heart failure, neurological deficit (including transient ischemic attack or stroke), respiratory failure (including pneumonia, prolongation of endotracheal intubation, need for a tracheostomy) or acute renal failure (plasma creatinine > 3 mg/dL with or without the need for dialysis).
30 days

Collaborators and Investigators

This is where you will find people and organizations involved with this study.

Sponsor

Sponsor

The organization or person who initiates the study and who has authority and control over the study.
Hospital Sao Joao

Study record dates

These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.

Study Major Dates

Study Start (ACTUAL)

Study Start

The actual date on which the first participant was enrolled in a clinical study. The "anticipated" study start date is the date that the researchers think will be the study start date.
January 1, 2018

Primary Completion (ACTUAL)

Primary Completion

The date on which the last participant in a clinical study was examined or received an intervention to collect final data for the primary outcome measure. Whether the clinical study ended according to the protocol or was terminated does not affect this date. For clinical studies with more than one primary outcome measure with different completion dates, this term refers to the date on which data collection is completed for all the primary outcome measures. The "anticipated" primary completion date is the date that the researchers think will be the primary completion date for the study.
September 1, 2018

Study Completion (ACTUAL)

Study Completion

The date on which the last participant in a clinical study was examined or received an intervention/treatment to collect final data for the primary outcome measures, secondary outcome measures, and adverse events (that is, the last participant's last visit). The "anticipated" study completion date is the date that the researchers think will be the study completion date.
December 1, 2018

Study Registration Dates

First Submitted

First Submitted

The date on which the study sponsor or investigator first submitted a study record to ClinicalTrials.gov. There is typically a delay of a few days between the first submitted date and the record's availability on ClinicalTrials.gov (the first posted date).
August 20, 2019

First Submitted That Met QC Criteria

First Submitted That Met QC Criteria

The date on which the study sponsor or investigator first submits a study record that is consistent with National Library of Medicine (NLM) quality control (QC) review criteria. The sponsor or investigator may need to revise and submit a study record one or more times before NLM's QC review criteria are met. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 22, 2019

First Posted (ACTUAL)

First Posted

The date on which the study record was first available on ClinicalTrials.gov after National Library of Medicine (NLM) quality control (QC) review has concluded. There is typically a delay of a few days between the date the study sponsor or investigator submitted the study record and the first posted date.
August 28, 2019

Study Record Updates

Last Update Posted (ACTUAL)

Last Update Posted

The most recent date on which changes to a study record were made available on ClinicalTrials.gov. There may be a delay between when the changes were submitted to ClinicalTrials.gov by the study's sponsor or investigator (the last update submitted date) and the last update posted date.
August 28, 2019

Last Update Submitted That Met QC Criteria

Last Update Submitted That Met QC Criteria

The most recent date on which the study sponsor or investigator submitted changes to a study record that are consistent with National Library of Medicine (NLM) quality control (QC) review criteria. It is the responsibility of the sponsor or investigator to ensure that the study record is consistent with the NLM QC review criteria.
August 22, 2019

Last Verified

Last Verified

The most recent date on which the study sponsor or investigator confirmed the information about a clinical study on ClinicalTrials.gov as accurate and current. If a study with a recruitment status of recruiting; not yet recruiting; or active, not recruiting has not been confirmed within the past 2 years, the study's recruitment status is shown as unknown.
August 1, 2019

More Information

Terms related to this study

Additional Relevant MeSH Terms

Other Study ID Numbers

Other Study ID Numbers

Identifiers or ID numbers other than the NCT number that are assigned to a clinical study by the study's sponsor, funders, or others. These numbers may include unique identifiers from other trial registries and National Institutes of Health grant numbers.
  • AAArepair

Plan for Individual participant data (IPD)

Plan to Share Individual Participant Data (IPD)?

NO

Drug and device information, study documents

Studies a U.S. FDA-regulated drug product

No

Studies a U.S. FDA-regulated device product

No

product manufactured in and exported from the U.S.

No

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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