TP5.2.13 Perceived risk of pre-operative abdominal aortic aneurysm rupture due to pulmonary function testing: all blown out of proportion?

Abstract Aim Though contraindicated in some respiratory laboratories due to a perceived increased risk of aneurysm rupture, pulmonary function tests (PFT) and cardiopulmonary exercise (CPET) are used commonly preoperative assessment patients with abdominal aortic (AAA) considered for elective repair. We examine whether PFT/CPET associated AAA rupture risk. Methods A retrospective analysis prospective database ≥50mm who had PFT/CPET/both as part their from November 2012 December 2020 single vascular hub before repair (open/endovascular). Patients <50mm, or those did not have preoperatively were excluded analysis. Baseline demographics, size, type repair, time rate 30-day post-operative mortality presented. Results total 410 (mean age 74 ± 8 years, 361 (88%) male) included the The mean size was 63 ±11mm. 350 (85%) underwent endovascular 220 (53%) PFT, 69 (17%) CPET remaining 121 (30%) both preoperatively. median 36 days (IQR 48 days), no this cohort. 3%. Conclusions This study strongly suggests that PFT therefore safe assessing without adding pre-operative