60 | wetenschapsdag 2023 Sessie 2a: Den Nederlanden - en Daar Voorbij x4 Auteurs B.L. Tran, V. Jongkind, M. Hoebink; On behalf of the European Vascular Research Collaborative* Abstract titel THE FOREVAR SURVEY: An International Survey on Follow-up Imaging after Endovascular Aneurysm Repair Background Perioperative mortality after abdominal aortic aneurysm (AAA) repair has significantly decreased since endovascular aneurysm repair (EVAR) was introduced. However, patients treated with a minimally invasive approach are more likely to experience long-term aortic complications and re-interventions than those undergoing open surgical repair. Endoleaks occur in one-third of the cases after EVAR for AAA. The value of follow-up imaging after EVAR is debatable, since routine imaging follow-up can also have negative effects on patients, including morbidity and mortality from corrective interventions and the use of radiation. The aim of this survey is to make an inventory of the variation in follow-up imaging protocols after standard and complex EVAR amongst vascular surgeons, interventional radiologists, and vascular surgery trainees in different centers worldwide. Methods A web-based survey via the platform SurveyMonkey® was conducted from September 2022 until April 2023. The online survey was created in English and dispersed through e-mail, social media promotion, and direct messaging. Results 868 responses were collected through the FOREVAR Survey from 65 countries worldwide. Most participants have a standardized follow-up imaging protocol for all patients, and all vascular surgeons, in their practice for the standard, elective EVAR (N=448; 51.6%). 18 respondents had no standard protocol (N=18; 2.0%). 549 respondents also practice complex EVAR (F-BEVAR) in their center (N=549; 63.2%). Most of these centers implemented the standard imaging follow-up protocol after EVAR for the complex EVAR (N=412; 75.18%). 511 participants also practice TEVAR in their center of practice (N=511; 58.9%) and implemented the same standard imaging follow-up protocol for TEVAR as the standard EVAR (N=389; 76.42%). Conclusion A worldwide survey on the follow-up imaging protocol after EVAR was dispersed. The FOREVAR Survey has identified similarities and differences between the imaging protocols implemented in different medical centers and countries.
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