Efficacy and safety of the needle rendezvous technique for infrainguinal arterial calcified lesions.

Background: Lower extremity artery disease is increasingly prevalent, and complex lesions such as calcified chronic total occlusions pose significant challenges during endovascular therapy. The needle rendezvous technique, which involves puncturing a needle toward the guidewire within the lesion or lumen and advancing the guidewire into the needle lumen to achieve guidewire externalization, offers a potential solution. If device passage remains challenging, the Rendezvous-PIERCE technique can be subsequently employed by advancing the needle over the externalized guidewire to modify the lesion directly. This study aimed to evaluate the procedural outcomes of needle rendezvous in infrainguinal arterial occlusive lesions.

Methods: This single-center, retrospective, single-arm study included patients treated with needle rendezvous between August 2020 and March 2024. The primary outcome was technical success rate, defined as the device passage following guidewire externalization using needle rendezvous. Secondary outcomes included the rates of procedural success, complications, and 30-day clinical-driven target lesion revascularization (CDTLR).

Results: Twenty-five patients (25 limbs) with 52% on hemodialysis and 80% having chronic limb-threatening ischemia in 52% and 80% were enrolled. All cases involved bilateral calcified occlusions, and 72% targeted the infrapopliteal artery segment. The average needle rendezvous time was 3.7 ± 2.0 min. Rendezvous-PIERCE was performed in 28% of cases. All cases achieved 100% technical and procedural success, with no procedure-related complications. The 30-day CDTLR rate was 8%, limited to below-the-knee lesions.

Conclusions: Needle rendezvous is a safe and effective technique for treating complex infrainguinal arterial occlusions, providing a viable alternative when conventional methods fail.