Postoperative surveillance and long-term outcome after endovascular aortic aneurysm repair in the Netherlands: study protocol for the retrospective ODYSSEUS study. Issue 2 (18th February 2020)

• Record Type: Journal Article
• Authors: Geraedts, Anna Catharina Maria; de Mik, Sylvana; Ubbink, Dirk; Koelemay, Mark; Balm, Ron
• Other Names: author non-byline.; Elshof JW author non-byline.; Elsman BHP author non-byline.; Hamming JF author non-byline.; van Herwaarden JA author non-byline.; Kropman RHJ author non-byline.; Lensvelt MM author non-byline.; Poyck PP author non-byline.; Schurink GWH author non-byline.; Smet AAEA de author non-byline.; van Sterkenburg SM author non-byline.; Ünlü C author non-byline.; Vahl AC author non-byline.; Verhagen HJM author non-byline.; Vriens PWHE author non-byline.; Vries JPPM de author non-byline.; Wever JJ author non-byline.; Wisselink W author non-byline.; Zeebregts CJ author non-byline.
• Is Part Of: BMJ open. Volume 10:Issue 2(2020)
• Publication Date: 2020-02-18
• Subjects: vascular surgery -- aortic aneurysm, abdominal -- endovascular procedures; Medicine -- Research -- Periodicals; 610.72
• DOI: 10.1136/bmjopen-2019-033584
• Languages: English
• ISSNs: 2044-6055

Abstract

Abstract : Introduction: Strict imaging surveillance protocols to detect complications following endovascular aneurysm repair (EVAR) are common practice. However, controversy exists as to whether all EVAR patients need intense surveillance. The 2019 European Society for Vascular Surgery guidelines for management of abdominal aortic aneurysm (AAA) suggest that patients may be considered for limited follow-up with imaging if classified as 'low risk' for complications based on their initial postoperative imaging. The current study aims to investigate the intervention-free survival and overall survival stratified for patients with and without yearly imaging surveillance. Methods and analysis: The Observing a Decade of Yearly Standardised Surveillance in EVAR patients with Ultrasound or CT Scan study comprises a national multicentre retrospective cohort study in 17 medical centres. Consecutive patients with an asymptomatic or symptomatic infrarenal AAA who underwent EVAR between January 2007 and January 2012 will be included in this study with follow-up until December 2018. Clinical variables and all follow-up information will be retrieved in extensive data collection from the patient's medical records. In addition, an e-survey was sent to vascular surgeons at the 17 participating centres to gauge their opinions regarding the possibility of safely reducing the frequency of imaging surveillance. Primary endpoints are intervention after EVAR and aneurysm-related mortality. The initial estimated sample size is 1997 patients. Ethics and dissemination: The study has been approved by the Medical Ethics Review Committee of the Amsterdam UMC, location Academic Medical Centre, Amsterdam, the Netherlands. Study findings will be disseminated via presentations at conferences and publications in peer-reviewed journal. Trial registration number: The Netherlands Trial Registry, NL6953 (old: NTR28773).