Can imaging surveillance frequency be safely reduced in a select group of EVAR patients, i.e. patients with an asymptomatic infrarenal abdominal aortic aneurysm (AAA) that underwent EVAR without abnormalities on the initial postoperative CTA.
ID
Bron
Verkorte titel
Aandoening
Abdominal aortic aneurysm, imaging surveillance, endovacular aortic repair
Abdominaal aorta aneurysma, standaard beeldvorming, endovasculaire aorta ingreep
Ondersteuning
Onderzoeksproduct en/of interventie
Uitkomstmaten
Primaire uitkomstmaten
the main outcome parameters are reinterventions and survival stratified for patients with and without yearly imaging surveillance during 6-11 years follow-up (in patient with a normal initial postoperative CTA)
Achtergrond van het onderzoek
Rationale: Yearly standardised imaging surveillance is recommended to all patients after endovascular aortic repair (EVAR) to detect complications requiring reintervention. However, this also causes a burden on both patients and the healthcare system.
Objective: The objective of this study is to evaluate whether imaging surveillance frequency can be safely reduced in a select group of EVAR patients, i.e. patients with an asymptomatic infrarenal abdominal aortic aneurysm (AAA) that underwent EVAR without abnormalities on the initial postoperative CTA.
Study design: Our study design is a multicentre retrospective cohort study in 16 medical centres.
Study population: All adult patients, with an asymptomatic infrarenal AAA that underwent elective EVAR between January 2007 and January 2012.
Main study parameters: The number of patients with reinterventions and survival stratified for patients with and without yearly standardised imaging surveillance in patient without abnormalities on their initial postoperative CTA.
Nature and extent of the burden and risks associated with participation, benefit and group relatedness: Patients from whose medical record we collect data will not benefit or be harmed by our study. However, we hope that the extracted information from these medical records, supports our theory about possible reducing the imaging surveillance frequency within ten years after EVAR in patients with an asymptomatic infrarenal AAA who underwent EVAR without abnormalities on initial postoperative CTA. Hence, future patients will benefit from this knowledge.
Doel van het onderzoek
Can imaging surveillance frequency be safely reduced in a select group of EVAR patients, i.e. patients with an asymptomatic infrarenal abdominal aortic aneurysm (AAA) that underwent EVAR without abnormalities on the initial postoperative CTA.
Onderzoeksopzet
All adult patients, with an asymptomatic infrarenal AAA that underwent elective EVAR between January 2007 and January 2012.
Onderzoeksproduct en/of interventie
standardised imaging surveillance
Publiek
Department of Vascular Surgery G4-111.1,
P.O. Box 22660
R. Balm
Meibergdreef 9
Amsterdam 1100 DD
The Netherlands
+31 (0)20 5667832
r.balm@amc.nl
Wetenschappelijk
Department of Vascular Surgery G4-111.1,
P.O. Box 22660
R. Balm
Meibergdreef 9
Amsterdam 1100 DD
The Netherlands
+31 (0)20 5667832
r.balm@amc.nl
Belangrijkste voorwaarden om deel te mogen nemen (Inclusiecriteria)
- Age above 17 years
- Patients that underwent EVAR between 2007 and 2012
- Patient with an initial postoperative CTA within 60 days after EVAR
- Patients with an asymptomatic infrarenal abdominal aortic aneurysm
Belangrijkste redenen om niet deel te kunnen nemen (Exclusiecriteria)
- Connective tissue disease
- Patients that objected to their retrospective data being used
Opzet
Deelname
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