Comparison of patients with occlusive or hemorrhagic access site complications requiring reintervention after percutaneous transfemoral transcatheter aortic valve implantation.

Background: Transcatheter aortic valve implantation (TAVI) via transfemoral (TF) access is increasingly integral to aortic valve disease treatment, expanding beyond high-risk patients. Despite technical advancements, access-related vascular complications, occurring in approximately 10% of TAVI procedures, remain a substantial challenge. Objective: This study investigated the clinical and morphological characteristics of percutaneous TF-TAVI patients experiencing occlusive (OC) and hemorrhagic (HC) complications managed with surgical or endovascular reintervention. Methods: The cohort included patients from a Dutch and a German tertiary referral hospital, managed with TF-TAVI procedures between 2017 and 2021 that required reintervention for OC or HC. Demographics, comorbidities, procedural details, and preoperative imaging data were collected and compared between groups. Results: Among 109 TF-TAVI patients, 32 with OC and 77 with HC required reintervention. The OC group presented significantly smaller access arterial diameters (common femoral artery: OC 6.7 mm vs. HC 8.9 mm, p<.001; external iliac artery: OC 7.2 mm vs. HC 8.3 mm, p<.001; common iliac artery: OC 9.4 mm vs. HC 10.5 mm, p=.012) while the HC group presented higher tortuosity index (TI) (OC 1.24 vs. HC 1.30; p=.017). No differences were observed regarding baseline characteristics, vessel calcification or vascular closure device use. Conclusions: In patients requiring reintervention following TF-TAVI, smaller arterial diameters were associated with OC, while higher TI was linked to HC. These findings emphasize the importance of preoperative imaging in developing individualized prevention strategies.